{"id":1698,"date":"2022-02-10T10:21:57","date_gmt":"2022-02-10T10:21:57","guid":{"rendered":"https:\/\/www.ibac-cp.rwth-aachen.de\/?page_id=1698"},"modified":"2024-12-05T09:41:28","modified_gmt":"2024-12-05T08:41:28","slug":"poly-news","status":"publish","type":"page","link":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/poly-news\/","title":{"rendered":"Poly-News"},"content":{"rendered":"<h2>Poly &#8211; News<\/h2>\n<p>\t\t\t\t\t\t\t\t\t<a href=\"\">2022<\/a><br \/>\n\t\t\t\t\t\t\t\t\t<a href=\"\">2021<\/a><br \/>\n\t\t\t\t\t\t\t\t\t<a href=\"\">2020<\/a><br \/>\n\t\t\t\t\t\t\t\t\t<a href=\"\">2019<\/a><br \/>\n\t\t\t\t\t\t\t\t\t<a href=\"\">2018<\/a><br \/>\n\t\t\t\t\t\t\t\t\t<a href=\"\">2017<\/a><br \/>\n\t\t\t\t\t\t\t\t\t<a href=\"\">2016<\/a><br \/>\n\t\t\t\t\t\t\t\t\t2022<\/p>\n<p><style>.elementor-2356 .elementor-element.elementor-element-74a43286 .elementor-posts-container article{margin-bottom:35px;}.elementor-2356 .elementor-element.elementor-element-74a43286 .elementor-post__thumbnail__link{width:25%;}.elementor-2356 .elementor-element.elementor-element-74a43286 .elementor-post__meta-data span + span:before{content:\"\/\/\/\";}.elementor-2356 .elementor-element.elementor-element-74a43286 .elementor-posts--skin-full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}.elementor-2356 .elementor-element.elementor-element-74a43286 .elementor-posts--skin-archive_full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}@media(max-width:767px){.elementor-2356 .elementor-element.elementor-element-74a43286 .elementor-posts-container .elementor-post__thumbnail{padding-bottom:calc( 0.5 * 100% );}.elementor-2356 .elementor-element.elementor-element-74a43286:after{content:\"0.5\";position:absolute;color:transparent;}.elementor-2356 .elementor-element.elementor-element-74a43286 .elementor-post__thumbnail__link{width:100%;}}<\/style>\n<section data-id=\"2482f768\" data-element_type=\"section\">\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/neue-veroeffentlichung-5\/\" ><br \/>\n\t\t\t\tNeue Ver\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tM\u00e4rz 3, 2022\t\t<\/p>\n<p> T. B. Mrohs, O. Weichold <br \/><em>Multivalent Allylammonium-Based  Cross-Linkers for the Synthesis of Homogeneous, Highly Swelling  Diallyldimethylammonium Chloride Hydrogels<\/em> <br \/><a href=\"https:\/\/doi.org\/10.3390\/gels8020100\">Gels<\/a> 2022, 8, 100 (open access) <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/neuer-doktorand\/\" ><br \/>\n\t\t\t\tNeuer Doktorand\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJanuar 19, 2022\t\t<\/p>\n<p> Seit Januar unterst\u00fctzt Nils M\u00fcnstermann die Arbeitsgruppe im Bereich  bio-basierte Baustoffe und entwickelt quellbare Chitosanderivate f\u00fcr  Beton- und Agraranwendungen.  <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortragsankuendigung-2\/\" ><br \/>\n\t\t\t\tVortragsank\u00fcndigung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJanuar 4, 2022\t\t<\/p>\n<p>O. Weichold <br \/><em>Alkaline hydrogels \u2013 multifunctional materials for concrete rehabilitation<\/em> \u2013 International Congress on Polymers in Concrete (IPCIC 2022)<\/p>\n<p>VERSCHOBEN AUF 2023<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortragsankuendigung\/\" ><br \/>\n\t\t\t\tVortragsank\u00fcndigung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJanuar 3, 2022\t\t<\/p>\n<p>O. Weichold <br \/><em>Hochalkalische Hydrogele \u2013 die Schweizer Taschenmesser der Instandsetzung<\/em> <br \/>NuBau \u2013 5. Tagung Nutzerorientierte Bausanierung, Weimar.<\/p>\n<p>VERSCHOBEN AUF 2023<\/p>\n<\/article>\n<\/section>\n<p>\t\t\t\t\t\t\t\t\t2021<\/p>\n<p><style>.elementor-2353 .elementor-element.elementor-element-6602cbf7 .elementor-posts-container article{margin-bottom:35px;}.elementor-2353 .elementor-element.elementor-element-6602cbf7 .elementor-post__thumbnail__link{width:25%;}.elementor-2353 .elementor-element.elementor-element-6602cbf7 .elementor-post__meta-data span + span:before{content:\"\/\/\/\";}.elementor-2353 .elementor-element.elementor-element-6602cbf7 .elementor-posts--skin-full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}.elementor-2353 .elementor-element.elementor-element-6602cbf7 .elementor-posts--skin-archive_full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}@media(max-width:767px){.elementor-2353 .elementor-element.elementor-element-6602cbf7 .elementor-posts-container .elementor-post__thumbnail{padding-bottom:calc( 0.5 * 100% );}.elementor-2353 .elementor-element.elementor-element-6602cbf7:after{content:\"0.5\";position:absolute;color:transparent;}.elementor-2353 .elementor-element.elementor-element-6602cbf7 .elementor-post__thumbnail__link{width:100%;}}<\/style>\n<section data-id=\"70158b51\" data-element_type=\"section\">\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/neue-veroeffentlichung-4\/\" ><br \/>\n\t\t\t\tNeue Ver\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tDezember 20, 2021\t\t<\/p>\n<p> M. Brenner, O. Weichold <br \/><em>Poultry Feather Waste as Bio-Based Cross-Linking Additive for Ethylene Propylene Diene Rubber<\/em> <br \/><a href=\"https:\/\/doi.org\/10.3390\/polym13223908\">Polymers<\/a> 2021, 13(22), 3908 (open access) <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/masterarbeit-abgeschlossen\/\" ><br \/>\n\t\t\t\tMasterarbeit abgeschlossen\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tDezember 8, 2021\t\t<\/p>\n<p> Herzlichen Gl\u00fcckwunsch an Nils M\u00fcnstermann zum erfolgreichen Abschluss  der Masterarbeit mit dem Titel \u201eSynthese und Eigenschaften von  Superabsorbern auf Basis von Chitosanhydrogelen\u201c im Studiengang Chemie! <br \/>Die Arbeit entstammt dem laufenden Projekt Biosuperabsorber.  <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/titelseite-3\/\" ><br \/>\n\t\t\t\tTitelseite\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tSeptember 15, 2021\t\t<\/p>\n<p> Die Ver\u00f6ffentlichung <em>Alkaline hydrogels as ion-conducting coupling material for electrochemical chloride extraction<\/em> von Andre Jung in Mater. Corr. hat es auf die Titelseite der Ausgabe 72 Band 9 geschafft! <br \/>Hier geht es zum <a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/maco.202170091\">Cover\u2192<\/a>  <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/neue-veroeffentlichung-3\/\" ><br \/>\n\t\t\t\tNeue Ver\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tAugust 10, 2021\t\t<\/p>\n<p> P. B. Sassmann, O. Weichold <br \/><em>Synergistic effects in cross-linked blends of ion-conducting PEO-\/PPO-based unsaturated polyesters <br \/><a href=\"https:\/\/doi.org\/10.1007\/s11581-021-04149-z\">Ionics<\/a><\/em>\u00a0<strong>2021<\/strong>,\u00a0<em>27<\/em>, 3857\u20133867 (open access) <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/neues-projekt-bio-basierte-lasuren-und-klebstoffe-fuer-holz\/\" ><br \/>\n\t\t\t\tNeues Projekt: Bio-basierte Lasuren und Klebstoffe f\u00fcr Holz\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJuli 20, 2021\t\t<\/p>\n<p> Am 1.10.2021 startet ein neues Projekt im Schwerpunkt bio-basierte  Baustoffe. Auf Basis von Chitosan entwickeln wir zusammen mit zwei  Industriepartnern Lasuren und Klebstoffe f\u00fcr Holz. Das Projekt wird  von\u00a0Tobias Boehnke\u00a0betreut. <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-14\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJuli 14, 2021\t\t<\/p>\n<p>Bericht aus dem laufenden Projekt&nbsp;<em>Rissinjektion<\/em>:<\/p>\n<p>O. Weichold <br \/><em>Acrylatfreie Zweikomponentengele zur Rissverpressung<\/em> <br \/>7. Kolloquium \u201eErhaltung von Bauwerken\u201c, Technische Akademie Esslingen, 14.7.2021, Ostfildern<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-13\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJuli 14, 2021\t\t<\/p>\n<p>Bericht aus dem abgeschlossenen Projekt&nbsp;<em>Chloridentzug mit Gel<\/em>:<\/p>\n<p>O. Weichold <br \/><em>Alkalische Hydrogele als Ankoppelungsmaterial f\u00fcr den elektrochemischen Chloridentzug<\/em> <br \/>7. Kolloquium \u201eErhaltung von Bauwerken\u201c, Technische Akademie Esslingen, 14.7.2021, Ostfildern<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/neue-veroeffentlichung-2\/\" ><br \/>\n\t\t\t\tNeue Ver\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tMai 11, 2021\t\t<\/p>\n<p>A. Jung, A. Faulhaber, O. Weichold <br \/><em>Alkaline hydrogels as ion-conducting coupling material for electrochemical chloride extraction <br \/><a href=\"https:\/\/doi.org\/10.1002\/maco.202112373\">Matter. Corr.<\/a><\/em>\u00a0<strong>2021<\/strong>,\u00a0<em>72<\/em>, 1448\u20131455 (open access)<\/p>\n<p>Eine Ver\u00f6ffentlichung aus dem abgeschlossenen ZIM-Projekt \u201eChloridentzug mit Gel\u201c<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-12\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tM\u00e4rz 18, 2021\t\t<\/p>\n<p> O. Weichold <br \/><em>Self-extinguishing wood-fibre boards using waste poultry-feather hydrolysates<\/em> <br \/>1<sup>st<\/sup>\u00a0International Conference on Science Technology &amp; Innovation, 19.3.2021, Chiang Mai, Thailand <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-11\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tM\u00e4rz 16, 2021\t\t<\/p>\n<p>Bericht aus dem abgeschlossenen Projekt&nbsp;<em>Chloridentzug mit Hydrogelen<\/em>:<\/p>\n<p>O. Weichold <br \/><em>Electrochemical Chloride Extraction using diallyldimethylammonium hydroxide based hydrogels as electrolytes<\/em> <br \/>3<sup>rd<\/sup>\u00a0International Conference on the Chemistry of Construction Materials, 17.3.2021, Karlsruhe<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/auf-touren-gekommen\/\" ><br \/>\n\t\t\t\tAuf Touren gekommen\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tM\u00e4rz 12, 2021\t\t<\/p>\n<p> Zur reproduzierbaren und qulatitativ hochwertigen Herstellung von  Probek\u00f6rpern und Mustern, z. B. aus unseren biobasierten Werkstoffen,  haben wir eine\u00a0<em>Stepcraft M\u20221000 CNC-Fr\u00e4se<\/em>\u00a0mit einem Arbeitsbereich von 679 \u00d7 1044 mm<sup>2<\/sup>\u00a0beschafft. Ansprechpartner ist\u00a0Tobias Boehnke. <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/titelseite-2\/\" ><br \/>\n\t\t\t\tTitelseite\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tM\u00e4rz 10, 2021\t\t<\/p>\n<p> Die Ver\u00f6ffentlichung\u00a0<a href=\"https:\/\/pubs.acs.org\/doi\/10.1021\/acsomega.0c03819\"><em>Protein Hydrolysates from Biogenic Waste as an Ecological Flame Retarder and Binder for Fiberboards<\/em><\/a>\u00a0von Markus Brenner hat es auf die Titelseite der Ausgabe 5 Band 50 geschafft! Hier geht es zum\u00a0<a href=\"https:\/\/pubs.acs.org\/toc\/acsodf\/5\/50\">Cover\u2192<\/a>\u00a0 <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/neues-projekt-biosuperabsorber\/\" ><br \/>\n\t\t\t\tNeues Projekt: Biosuperabsorber\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tM\u00e4rz 3, 2021\t\t<\/p>\n<p> R\u00fcckwirkend zum 1.1. wurde uns ein Projekt zur Entwicklung in Wasser  quellbarer Materialien aus Basis nachwachsender Rohstoffe bewilligt. Im  Verbund mit industriellen Partnern werden der Zusammenhang zwischen  Zusammensetzung und Eigenschaften aufgekl\u00e4rt, Kapazit\u00e4ten zum scale-up  aufgebaut und geeignete Prototypen in der Endanwendungen getestet. Das  Projekt wird von\u00a0Tobias Boehnke\u00a0betreut. <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/neues-projekt-recyclingschaeume\/\" ><br \/>\n\t\t\t\tNeues Projekt: Recyclingsch\u00e4ume\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tM\u00e4rz 3, 2021\t\t<\/p>\n<p>R\u00fcckwirkend zum 1.11. wurde uns ein Projekt zur Entwicklung mechanisch stabiler Sch\u00e4ume bewilligt. Das Projekt baut auf die in&nbsp;<a href=\"https:\/\/doi.org\/10.3390\/app10062150\"><em>Appl. Sci.<\/em>&nbsp;2020<\/a>&nbsp;beschriebenen<br \/>\n Materialien auf. Zus\u00e4tzlich wird die Wirkung von F\u00fcllstoffen aus<br \/>\nRecyclingmaterialien getestet. Das Projekt wird von&nbsp;Fabian<br \/>\nWeitenhagen&nbsp;betreut.<\/p>\n<\/article>\n<\/section>\n<p>\t\t\t\t\t\t\t\t\t2020<\/p>\n<style>.elementor-2350 .elementor-element.elementor-element-391cbd05 .elementor-posts-container article{margin-bottom:35px;}.elementor-2350 .elementor-element.elementor-element-391cbd05 .elementor-post__thumbnail__link{width:25%;}.elementor-2350 .elementor-element.elementor-element-391cbd05 .elementor-post__meta-data span + span:before{content:\"\/\/\/\";}.elementor-2350 .elementor-element.elementor-element-391cbd05 .elementor-posts--skin-full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}.elementor-2350 .elementor-element.elementor-element-391cbd05 .elementor-posts--skin-archive_full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}@media(max-width:767px){.elementor-2350 .elementor-element.elementor-element-391cbd05 .elementor-posts-container .elementor-post__thumbnail{padding-bottom:calc( 0.5 * 100% );}.elementor-2350 .elementor-element.elementor-element-391cbd05:after{content:\"0.5\";position:absolute;color:transparent;}.elementor-2350 .elementor-element.elementor-element-391cbd05 .elementor-post__thumbnail__link{width:100%;}}<\/style>\n<section data-id=\"4dc9e79d\" data-element_type=\"section\">\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/neuer-mitarbeiter\/\" ><br \/>\n\t\t\t\tNeuer Mitarbeiter\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tDezember 22, 2020\t\t<\/p>\n<p> Seit Dezember unterst\u00fctzt&nbsp;Fabian Weitenhagen&nbsp;die Arbeitsgruppe im  Bereich bio-basierte Baustoffe und entwickelt die ersten Arbeiten an den  Polykondensationsharzen (<a href=\"https:\/\/doi.org\/10.3390\/app10062150\"><em>Appl. Sci.<\/em>&nbsp;<\/a>2020)&nbsp;weiter. <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/neue-veroeffentlichung\/\" ><br \/>\n\t\t\t\tNeue Ver\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tDezember 18, 2020\t\t<\/p>\n<p> M. Brenner, O. Weichold <br \/><em>Protein Hydrolysates from Biogenic Waste as an Ecological Flame Retarder and Binder for Fiberboards <br \/>ACS Omega<\/em>\u00a02020, 5, 32227 (open access). <\/p>\n<\/article>\n<article>\n\t\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-11\/\" ><br \/>\n\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"192\" src=\"https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Fig5_web-300x192-1.png\" alt=\"\" srcset=\"https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Fig5_web-300x192-1.png 300w, https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Fig5_web-300x192-1-18x12.png 18w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n\t\t<\/a><\/p>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-11\/\" ><br \/>\n\t\t\t\tVer\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tOktober 6, 2020\t\t<\/p>\n<p>A. Jung, M. B. Endres, O. Weichold <br \/>Polymers 2020 <br \/><a href=\"https:\/\/www.mdpi.com\/2073-4360\/12\/10\/2185\/pdf\">Zum Artikel\u2192<\/a><\/p>\n<p><em>Influence of Environmental Factors on the Swelling Capacities of Superabsorbent Polymers Used in Concrete<\/em><\/p>\n<p> ABSTRACT: Superabsorbent polymers (SAP) are of major interest as  materials to control the cement hydration process. The swelling behavior  of the SAPs significantly influences the performance of the resulting  concrete by slowly releasing polymer-bound water in order to maintain a  consistent w\/c value. A round-robin test conducted by the RILEM  Technical Committee 260-RSC showed that the same batch of polymer can  lead to large deviations in concrete performance and this was assumed to  originate in di<br \/>erent storage conditions of the SAP. In this  contribution the change in the performance of two SAPs, a crosslinked  poly(acrylate) and a crosslinked poly(acrylate-co-acrylamide), was  assessed after ageing in standard climate, at 50 <br \/>\u00b0C, and under UV  irradiation. During storage in standard climate or 50 \u00b0C, ageing led to  dehydration of the SAP, and this subsequently led to a higher water  uptake during swelling. By contrast, UV irradiation reduced the water  uptake, most likely as a result of photo-crosslinking. Dynamic water  vapor sorption experiments indicated a strong dependence of the water  uptake on both the ambient humidity and the temperature. As a result,  cement mixtures containing SAP must be calculated on the dry mass of the  SAP rather than the actual weight on site. A standard procedure of how  to pack and handle SAP to be used in concrete is also provided. <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/bachelorarbeit-11\/\" ><br \/>\n\t\t\t\tBachelorarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tSeptember 4, 2020\t\t<\/p>\n<p>Denis Clou<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Bachelorarbeit <br \/><em>Gefl\u00fcgelfedern als biobasierter F\u00fcllstoff in Elastomerlagern<\/em><br \/><em>Use of poultry feathers as a bio-based filler in elastomer bearings<\/em><\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/bachelorarbeit-10\/\" ><br \/>\n\t\t\t\tBachelorarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tSeptember 3, 2020\t\t<\/p>\n<p>Marvin Oomen<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Bachelorarbeit <br \/><em>Chitosanbasierte Interpolyelektrolytkomplexe zur Oberfl\u00e4chenversiegelung<\/em><br \/><em>Chitosan-based interpolyelectrolyte complexes for surface sealing<\/em><\/p>\n<\/article>\n<article>\n\t\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-10\/\" ><br \/>\n\t\t\t<img decoding=\"async\" width=\"768\" height=\"477\" src=\"https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Figure-4-768x477-1.png\" alt=\"\" srcset=\"https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Figure-4-768x477-1.png 768w, https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Figure-4-768x477-1-300x186.png 300w, https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Figure-4-768x477-1-18x12.png 18w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><br \/>\n\t\t<\/a><\/p>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-10\/\" ><br \/>\n\t\t\t\tVer\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tMai 5, 2020\t\t<\/p>\n<p>M. Brenner, C. Popescu, O. Weichold <br \/>Appl. Sci. 2020 <br \/><a href=\"https:\/\/doi.org\/10.3390\/app10062150\">Zum Artikel\u2192<\/a><\/p>\n<p><em>Anti-Frothing Effect of Poultry Feathers in Bio-Based, Polycondensation-Type Thermoset Composites<\/em><\/p>\n<p> ABSTRACT: The formation of polycondensation-type thermoset resins from  natural reactants such as citric and glutaric acid, as well as  1,3-propanediol and glycerol, was studied. Monitoring the mass loss by  thermogravimetric analysis (TGA) allowed the rate constants of the  esterification to be calculated, which were in the order of 7\u00b710\u22125 s\u22121  for glutaric acid and approximately twice as high for citric acid.  However, the combination citric acid\/glycerol was previously reported to  froth up at high conversions, giving rise to foams, which makes the  preparation of compact engineering composites challenging. In light of  this, we observed that shredded poultry feathers not only increased the  conversion and the reaction rate of the combination citric  acid\/glycerol, but increasing the amount of feathers continuously  decreased the number of visible bubbles. The addition of 20 wt% of  feathers completely prevented the previously reported frothing and gave  rise to compact materials that were macroscopically free of defects.  Besides this, the addition of feathers also improved the fire-retardant  properties. The tensile properties of the first specimens are still  rather low (\u03c3 = 11.6 N\/mm2, E = 750 N\/mm2), but the addition of poultry  feathers opens a new path for green thermoset resins. <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/masterarbeit-4\/\" ><br \/>\n\t\t\t\tMasterarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tFebruar 3, 2020\t\t<\/p>\n<p>Tim Mrohs<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Masterarbeit <br \/><em>Synthese von vernetzten Copolymerelektrolytgelen auf Basis von Diallyldimethylammoniumchlorid und -hydroxid<\/em> <br \/><em>Synthesis of crosslinked copolymer electrolyte gels based on diallyldimethylammonium chloride and -hydroxide<\/em><\/p>\n<\/article>\n<\/section>\n<p>\t\t\t\t\t\t\t\t\t2019<\/p>\n<p><style>.elementor-2347 .elementor-element.elementor-element-49f293fe .elementor-posts-container article{margin-bottom:35px;}.elementor-2347 .elementor-element.elementor-element-49f293fe .elementor-post__thumbnail__link{width:25%;}.elementor-2347 .elementor-element.elementor-element-49f293fe .elementor-post__meta-data span + span:before{content:\"\/\/\/\";}.elementor-2347 .elementor-element.elementor-element-49f293fe .elementor-posts--skin-full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}.elementor-2347 .elementor-element.elementor-element-49f293fe .elementor-posts--skin-archive_full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}@media(max-width:767px){.elementor-2347 .elementor-element.elementor-element-49f293fe .elementor-posts-container .elementor-post__thumbnail{padding-bottom:calc( 0.5 * 100% );}.elementor-2347 .elementor-element.elementor-element-49f293fe:after{content:\"0.5\";position:absolute;color:transparent;}.elementor-2347 .elementor-element.elementor-element-49f293fe .elementor-post__thumbnail__link{width:100%;}}<\/style>\n<section data-id=\"7ec14590\" data-element_type=\"section\">\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-10\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tOktober 1, 2019\t\t<\/p>\n<p>O. Weichold, P. B. Sassmann<\/p>\n<p>Jahrestagung der GDCh-Fachgruppe Bauchemie, <strong>1.10.2019<\/strong>, Aachen<\/p>\n<p><em>Numerische Strukturanalyse f\u00fcr das in silico Design moderner Hybridmaterialien<\/em><\/p>\n<p>ABSTRACT:<br \/>\n Moderne Hochleistungsmaterialien erhalten ihre au\u00dfergew\u00f6hnlichen<br \/>\nEigenschaften aus dem Zusammenspiel einzelner Komponenten. Aus<br \/>\nmechanischer Sicht ergeben sich jedoch Probleme bei der Bestimmung des<br \/>\nmakroskopischen Materialverhaltens. Ziel ist demnach die Ermittlung des<br \/>\nMaterialverhaltens durch numerische Simulation am Beispiel eines<br \/>\npolymergetr\u00e4nkten Betonk\u00f6rpers.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-9\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tOktober 1, 2019\t\t<\/p>\n<p>M. Brenner<\/p>\n<p>Jahrestagung der GDCh-Fachgruppe Bauchemie,<strong> 1.10.2019<\/strong>, Aachen<\/p>\n<p><em>Einsatz von Federkeratin als Brandschutzimpr\u00e4gnierung f\u00fcr Holz und als nicht brennbares W\u00e4rmed\u00e4mmmaterial<\/em><\/p>\n<p>ABSTRACT:<br \/>\n Es werden neue Verwendungsm\u00f6glichkeiten f\u00fcr Federn gezeigt, da diese<br \/>\nals biogener Reststoff in gro\u00dfen Mengen anfallen. Dabei ist die<br \/>\nVerbesserung der Brandeigenschaften ein zentraler Punkt. Die Federn<br \/>\nwerden einerseits zu einer nicht brennbaren W\u00e4rmed\u00e4mmplatte verarbeitet.<br \/>\n Au\u00dferdem werden keratinhaltige L\u00f6sungen zur Behandlung von<br \/>\nHolzwerkstoffen genutzt um gezielt die Brennbarkeit zu verringern und<br \/>\ndas Glimmverhalten zu verbessern.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/bachelorarbeit-9\/\" ><br \/>\n\t\t\t\tBachelorarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tAugust 13, 2019\t\t<\/p>\n<p>Kaja Kensmann<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Bachelorarbeit <br \/><em>Thermoplastische Verarbeitung von Federn mit einem polymerisierbaren Weichmachersystem<\/em> <br \/><em>Thermoplastic treatment of feathers with a polymerizable plasticizer system<\/em><\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/bachelorarbeit-8\/\" ><br \/>\n\t\t\t\tBachelorarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tAugust 5, 2019\t\t<\/p>\n<p>Sarah Weides<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Bachelorarbeit <br \/><em>Synthese und elektrochemische Charakterisierung von Oligoethylenglykol-modifizierten 4,4\u2032-Bipyridinen<\/em> <br \/><em>Synthesis and electrochemical behaviour of oligoethyleneglycol-modified 4,4\u2032 bipyridines<\/em><\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-8\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJuni 3, 2019\t\t<\/p>\n<p>O. Weichold<\/p>\n<p>European Polymer Congress, 13. Juni <strong>2019<\/strong>, Kreta<\/p>\n<p><em>Fighting fire with feathers \u2013 transforming natural waste into flame-retardant materials<\/em><\/p>\n<p>ABSTRACT:<br \/>\n Keratin is a natural fibre protein widely found in the animal kingdom,<br \/>\nwhere it is the basis of e. g. wool and hair, horns, scales, and<br \/>\nfeathers. Besides its broad spectrum of mechanical properties, keratin<br \/>\nis particularly characterized by its poor flammability and even<br \/>\nself-extinguishing behaviour. Most approaches which use keratin as a<br \/>\nchemical feedstock require a solubilisation step, and this can be<br \/>\naccomplished by either alkaline hydrolysis or reduction of the<br \/>\ndisulphide bridges. We have refined the latter to be more convenient and<br \/>\n economical, but more importantly to produce two kreatin fractions,<br \/>\nwhich were both found to be valuable intermediates in producing<br \/>\nflame-retarding materials. The first fraction consists of water-soluble<br \/>\nprotein hydrolysates, which can be used as impregnation for particle and<br \/>\n fibre boards. The second fraction is a gel, which can be transformed<br \/>\ninto foamed boards. These materials match commercial EPS\/XPS boards in<br \/>\nterms of their thermal conductivities, but will not ignite or burn when<br \/>\nsubjected to an open flame. The contribution will present our latest<br \/>\nresults on the preparation and application of these two fractions.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-9\/\" ><br \/>\n\t\t\t\tVer\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJanuar 16, 2019\t\t<\/p>\n<p>T. Juraschek, O. Weichold <br \/>Beton <strong>2019<\/strong>, 5, 168\u2013171.<\/p>\n<p><em>Elektrochromie zur Visualisierung kleiner Strommengen<\/em><\/p>\n<p>ABSTRACT:<br \/>\n Ein Nachteil aktueller Korrosions-Monitoringsysteme ist die<br \/>\nVerf\u00fcgbarkeit geeigneter Ausleseger\u00e4te zur Prognose der Lebensdauer der<br \/>\n\u00fcberwachten Strukturen. Vor Ort installierte, wartungsfreie und einfach<br \/>\nabzulesende Einheiten w\u00e4ren f\u00fcr den Einsatz von Vorteil. Vor diesem<br \/>\nHintergrund wurde ein Bauteil entwickelt, das in der Lage ist, kleine<br \/>\nStrommengen auf Basis der Elektrochromie zu visualisieren. Ziel ist es<br \/>\nin erster Linie, Korrosionsstr\u00f6me zu erfassen und visuell entsprechend<br \/>\ndarzustellen. In dem Beitrag werden der Aufbau des Bauteils, seine<br \/>\nelektrochemische Charakterisierung und die Visualisierung von<br \/>\nKorrosionsstr\u00f6men unter Laborbedingungen sowie an real korrodierenden<br \/>\nStahlbetonpr\u00fcfk\u00f6rpern beschrieben.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-8\/\" ><br \/>\n\t\t\t\tVer\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJanuar 16, 2019\t\t<\/p>\n<p>C. Morales Cruz, Oliver Weichold, H.-J. Kocks <br \/>Beton <strong>2019<\/strong>, 5, 162\u2013167.<\/p>\n<p><em>FOULPROTECT \u2013 zur Problematik des Bewuchses in Meerwasserbauwerken<\/em><\/p>\n<p>ABSTRACT:<br \/>\n Im Rahmen des Verbundprojekts FOULPROTECT \u201eBewuchsschutz und Vermeidung<br \/>\n von Biokorrosion in der Maritimen Technik\u201c wurde am Institut f\u00fcr<br \/>\nBauforschung der RWTH Aachen University (ibac) in Zusammenarbeit mit den<br \/>\n Firmen Salzgitter Mannesmann Line Pipe GmbH (SMLP) und LimnoMar eine<br \/>\nmineralische Ummantelung mit erh\u00f6htem mechanischen Widerstand f\u00fcr<br \/>\nStahlkonstruktionen im Meerwasserbereich entwickelt. Die Eignung<br \/>\nverschiedener kommerziell verf\u00fcgbarer Werktrockenm\u00f6rtel als<br \/>\nSchutzschicht wurde am Beispiel von Stahlrohren f\u00fcr Gr\u00fcndungsstrukturen<br \/>\nvon Offshore-Windkraftanlagen getestet. Dazu wurden die Frisch- und<br \/>\nFestm\u00f6rtelkennwerte bestimmt sowie Dauerhaftigkeitsuntersuchungen in<br \/>\nLaborversuchen unter realen Bedingungen (Luft- und Meerwasserlagerung)<br \/>\ndurchgef\u00fchrt. Der Aufwuchs (Biofouling) auf der M\u00f6rtelumh\u00fcllung bei<br \/>\neiner Meerwasserlagerung konnte bei keinem der untersuchten Materialien<br \/>\nverhindert werden, aber fluoreszenzmikroskopische Untersuchungen zeigten<br \/>\n weder Mikro- noch Makrobesiedlungen unterhalb der M\u00f6rteloberfl\u00e4che.<br \/>\nZwischen den einzelnen Materialien wurden deutliche Unterschiede bei der<br \/>\n Rissanzahl der ausgelagerten Proben festgestellt. Unter<br \/>\nBer\u00fccksichtigung aller Untersuchungen weisen hochfeste M\u00f6rtelmischungen<br \/>\ndas gr\u00f6\u00dfte Potenzial auf, abrasiven Einwirkungen und inneren<br \/>\nSprengdr\u00fccken dauerhaft standzuhalten.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-7\/\" ><br \/>\n\t\t\t\tVer\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJanuar 14, 2019\t\t<\/p>\n<p>P. B. Sassmann, O. Weichold <br \/>Ionics <strong>2019<\/strong> <br \/><a href=\"https:\/\/doi.org\/10.1007\/s11581-019-02958-x\">Zum Artikel\u2192<\/a><\/p>\n<p><em>Preparation<br \/>\n and characterisation of ion-conductive unsaturated polyester resins for<br \/>\n the on-site production of resistivity sensors<\/em><\/p>\n<p>ABSTRACT:<br \/>\nIon-conductive unsaturated polyesters were synthesised from<br \/>\npoly(ethylene oxide) and maleic anhydride for use in the development of<br \/>\nimproved methods for the structural-health monitoring of infrastructural<br \/>\n buildings. The unsaturated polyesters (UP) were cross-linked with<br \/>\nstyrene using a redox initiator in the presence of LiClO4.<br \/>\nElectrochemical impedance-spectroscopy was used to study the effects of<br \/>\ninitiator and styrene concentration as well as the EO:Li+ ratio.<br \/>\nIncreasing the initiator or styrene content results in an increased<br \/>\nresistivity of the final materials. Cross-linking with styrene does not<br \/>\nappear to cause microphase separation into pure UP and polystyrene<br \/>\nphases, since the resulting resistivities are significantly lower than<br \/>\npredicted by the rule of mixtures. For all temperatures under<br \/>\ninvestigation (0 \u00b0C to 60 \u00b0C), the lowest resistivities were found for a<br \/>\n EO:Li+ ratio of 50 (400 \u03a9\u00b7m at 22 \u00b0C), which is in accordance with<br \/>\nprevious findings. The electrical properties of the present materials<br \/>\nare determined by diffusion controlled process in such a way<br \/>\npolarisation prevails at high temperatures. In a proof of principle<br \/>\nexperiment, one selected UP formulation was injected into drill holes in<br \/>\n concrete and cured at different temperatures and moisture conditions.<br \/>\nThis system reliably monitors the resistivity against an embedded<br \/>\nreference electrode.<\/p>\n<\/article>\n<\/section>\n<p>\t\t\t\t\t\t\t\t\t2018<\/p>\n<p><style>.elementor-2344 .elementor-element.elementor-element-39c54a12 .elementor-posts-container article{margin-bottom:35px;}.elementor-2344 .elementor-element.elementor-element-39c54a12 .elementor-post__thumbnail__link{width:25%;}.elementor-2344 .elementor-element.elementor-element-39c54a12 .elementor-post__meta-data span + span:before{content:\"\/\/\/\";}.elementor-2344 .elementor-element.elementor-element-39c54a12 .elementor-posts--skin-full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}.elementor-2344 .elementor-element.elementor-element-39c54a12 .elementor-posts--skin-archive_full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}@media(max-width:767px){.elementor-2344 .elementor-element.elementor-element-39c54a12 .elementor-posts-container .elementor-post__thumbnail{padding-bottom:calc( 0.5 * 100% );}.elementor-2344 .elementor-element.elementor-element-39c54a12:after{content:\"0.5\";position:absolute;color:transparent;}.elementor-2344 .elementor-element.elementor-element-39c54a12 .elementor-post__thumbnail__link{width:100%;}}<\/style>\n<section data-id=\"31c14fdb\" data-element_type=\"section\">\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-6\/\" ><br \/>\n\t\t\t\tVer\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tNovember 20, 2018\t\t<\/p>\n<p>M. B. Endres, O. Weichold <br \/>Carbohydrate Polym. <strong>2018<\/strong> <br \/><a href=\"https:\/\/doi.org\/10.1016\/j.carbpol.2018.12.031\">Zum Artikel\u2192<\/a><\/p>\n<p><em>Sorption-active transparent films based on chitosan<\/em><\/p>\n<p>ABSTRACT:<br \/>\n In this paper we describe the preparation of alkanoic acid-based<br \/>\naqueous chitosan solutions, which show no sign of acid-catalysed<br \/>\ndepolymerisation over time \u2013 something commonly accompanying other<br \/>\npreparation methods. Longer chitosan chains have previously been shown<br \/>\nto exhibit more advantageous biological activities, and constant<br \/>\nviscosities are essential for consistent quality in biomedical<br \/>\napplications. Avoiding acid-catalysed depolymerisation requires careful<br \/>\ncontrol of the stoichiometry between the free amino groups of chitosan<br \/>\nand the appropriate solubilising acid. Acetic and butyric acid are both<br \/>\nsuitable solubilising agents, but chitosan butyrate exhibits lower<br \/>\nsolution viscosities due to a combined electric and steric shielding of<br \/>\nthe chains.<br \/>These solutions dry into clear transparent films that<br \/>\nremain fully water soluble and absorb up to 70\u2009wt% of water from 90 %-RH<br \/>\n vapour phase at 25\u2009\u00b0C. The absorption follows simple first-order<br \/>\nkinetics and the rate constants increase with increasing humidity up to<br \/>\napprox. 71 %-RH, where a metastable chitosan trihydrate salt appears to<br \/>\nbe formed. Desorption is slightly faster, but more complex, as it<br \/>\nexhibits two distinct first-order processes. In addition, films prepared<br \/>\n in this way are thermally more stable than the usual chitosan<br \/>\nhydrochloride.<\/p>\n<\/article>\n<article>\n\t\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/titelseite\/\" ><br \/>\n\t\t\t<img decoding=\"async\" width=\"212\" height=\"300\" src=\"https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Cover-RSC-212x300-1.jpg\" alt=\"\" srcset=\"https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Cover-RSC-212x300-1.jpg 212w, https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Cover-RSC-212x300-1-8x12.jpg 8w\" sizes=\"(max-width: 212px) 100vw, 212px\" \/><br \/>\n\t\t<\/a><\/p>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/titelseite\/\" ><br \/>\n\t\t\t\tTitelseite\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tOktober 16, 2018\t\t<\/p>\n<p>A. Jung, O. Weichold<\/p>\n<p> Andres Ver\u00f6ffentlichung \u201e<em>Preparation and characterisation of highly alkaline hydrogels for the re-alkalisation of carbonated cementitious materials<\/em>\u201c wurde von Soft Matter f\u00fcr die Gestaltung der Titelseite ausgew\u00e4hlt <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/bachelorarbeit-7\/\" ><br \/>\n\t\t\t\tBachelorarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tOktober 3, 2018\t\t<\/p>\n<p>Lutz Burow<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Bachelorarbeit <br \/><em>Untersuchung der thermischen Eigenschaften von mit Keratin impr\u00e4gnierten Holzsp\u00e4nen<\/em> <br \/><em>Thermal properties of keratin-impregnated chipped wood<\/em><\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-7\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tSeptember 11, 2018\t\t<\/p>\n<p>O. Weichold <br \/>IBAUSIL, Weimar, 12.\u201314. September <strong>2018<\/strong><\/p>\n<p><em>Polymere und Beton \u2013 Eine wilde Ehe mit Potential<\/em><\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/bachelorarbeit-6\/\" ><br \/>\n\t\t\t\tBachelorarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tSeptember 3, 2018\t\t<\/p>\n<p>Lena Schmitz<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Bachelorarbeit <br \/><em>Vernetzte Polyethylenglycole als Tr\u00e4ger f\u00fcr ionenleitf\u00e4hige Filme<\/em> <br \/><em>Cross-linked polyethylene glycol matrix for ion-conductive films<\/em><\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/masterarbeit-3\/\" ><br \/>\n\t\t\t\tMasterarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tAugust 14, 2018\t\t<\/p>\n<p>Jan Tenbusch<\/p>\n<p>Diese Masterarbeit wurde extern, in Zusammenarbeit mit der Fa. Henkel durchgef\u00fchrt. Wir gratulieren zum erfolgreichen Abschluss.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/bachelorarbeit-5\/\" ><br \/>\n\t\t\t\tBachelorarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tAugust 7, 2018\t\t<\/p>\n<p>Kathrin Dahm<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Bachelorarbeit <br \/><em>Synthese ethoxylierter und propoxylierter Styrole zur Herstellung ionisch leitf\u00e4higer Polyester<\/em><br \/><em>Synthesis of ethoxylated and propoxylated styrene for the formation of ionic conductive polyesters<\/em><\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/bachelorarbeit-4\/\" ><br \/>\n\t\t\t\tBachelorarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJuli 3, 2018\t\t<\/p>\n<p>Julia Littke<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Bachelorarbeit <br \/><em>Synthese unges\u00e4ttigter Polyester auf Basis von PPO<\/em><br \/><em>Synthesis of unsaturated polyesters based on PPO<\/em><\/p>\n<\/article>\n<article>\n\t\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-5\/\" ><br \/>\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"540\" height=\"280\" src=\"https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Graphical-Abstract-final-lowres-540x280-1.png\" alt=\"\" srcset=\"https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Graphical-Abstract-final-lowres-540x280-1.png 540w, https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Graphical-Abstract-final-lowres-540x280-1-300x156.png 300w, https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Graphical-Abstract-final-lowres-540x280-1-18x9.png 18w\" sizes=\"(max-width: 540px) 100vw, 540px\" \/><br \/>\n\t\t<\/a><\/p>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-5\/\" ><br \/>\n\t\t\t\tVer\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tMai 9, 2018\t\t<\/p>\n<p>A. Jung, O. Weichold<br \/>Soft Matter. <strong>2018<\/strong><br \/><a href=\"https:\/\/doi.org\/10.1039\/c8sm01158c\">Zum Artikel\u2192<\/a><\/p>\n<p><em>Preparation and characterisation of highly alkaline hydrogels for the re-alkalisation of carbonated cementitious materials<\/em><\/p>\n<p>ABSTRACT:<br \/>\n Highly alkaline hydrogels that allow the restoration of alkaline buffer<br \/>\n in cementitious materials can be obtained from diallyldimethylammonium<br \/>\nhydroxide. The latter must be prepared in dilute solutions and<br \/>\npolymerised at ambient temperatures in order to avoid decomposition.<br \/>\nUsing methacrylamide as a neutral co-monomer capable of forming hydrogen<br \/>\n bonds, the rheological properties of the gels can be adjusted over a<br \/>\nwide range; e.g. the viscosity increases a thousandfold from 0.35 Pa\u00b7s<br \/>\nto 4350 Pa\u00b7s by using 10 mol% methacrylamide. For the proof of principle<br \/>\n experiments, gels with 9 mol% methacrylamide were used, which contain<br \/>\napprox. 1.6 mol hydroxide ions per kg gel. Ion exchange between this and<br \/>\n a neutral chloride containing gel provided an apparent diffusion<br \/>\ncoefficient of 4.12\u00b710\u22127 m2 s\u22121 for the hydroxide ions and confirmed the<br \/>\n transport of chloride ions into the alkaline gel. The re-alkalisation<br \/>\nwas tested on fully carbonated mortar prisms made from Portland cement.<br \/>\nRe-alkalisation of the mortar was confirmed by the phenolphthalein test<br \/>\naccording to DIN EN 14630:2007-01 and by a control experiment with pure<br \/>\ncalcium carbonate using IR spectroscopy.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/bachelorarbeit-3\/\" ><br \/>\n\t\t\t\tBachelorarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tApril 3, 2018\t\t<\/p>\n<p>Jan Bandowski<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Bachelorarbeit <br \/><em>Entwicklung von Steuerungsmechanismen zur Regulierung der viskosen Eigenschaften eines PolyDADMAC-Gels<\/em><br \/><em>Development of mechanisms to control the viscous properties of PolyDADMAC gels<\/em> <br \/>Die Arbeit wurde zusammen mit der FH Aachen, Fachbereich Chemie und Biotechnologie durchgef\u00fchrt.<\/p>\n<\/article>\n<\/section>\n<p>\t\t\t\t\t\t\t\t\t2017<\/p>\n<p><style>.elementor-2332 .elementor-element.elementor-element-dbf4b03 .elementor-posts-container article{margin-bottom:35px;}.elementor-2332 .elementor-element.elementor-element-dbf4b03 .elementor-post__thumbnail__link{width:25%;}.elementor-2332 .elementor-element.elementor-element-dbf4b03 .elementor-post__meta-data span + span:before{content:\"\/\/\/\";}.elementor-2332 .elementor-element.elementor-element-dbf4b03 .elementor-posts--skin-full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}.elementor-2332 .elementor-element.elementor-element-dbf4b03 .elementor-posts--skin-archive_full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}@media(max-width:767px){.elementor-2332 .elementor-element.elementor-element-dbf4b03 .elementor-posts-container .elementor-post__thumbnail{padding-bottom:calc( 0.5 * 100% );}.elementor-2332 .elementor-element.elementor-element-dbf4b03:after{content:\"0.5\";position:absolute;color:transparent;}.elementor-2332 .elementor-element.elementor-element-dbf4b03 .elementor-post__thumbnail__link{width:100%;}}<\/style>\n<section data-id=\"f4e5026\" data-element_type=\"section\">\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-4\/\" ><br \/>\n\t\t\t\tVer\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tOktober 3, 2017\t\t<\/p>\n<p>T. Juraschek, O. Weichold <br \/>J. Phys. Org. Chem. <strong>2017<\/strong>; e3739 <br \/><a href=\"https:\/\/doi.org\/10.1002\/poc.3739\">Zum Artikel\u2192<\/a><\/p>\n<p><em>Development<br \/>\n of an electrochromic device triggered by the macrocell current in<br \/>\nchloride-induced corrosion of steel-reinforced concrete<\/em><\/p>\n<p>ABSTRACT:<br \/>\n This article presents the development and characterisation of an<br \/>\nelectrochromic device and its application to detect steel corrosion in<br \/>\nreinforced concrete. Steel corrosion inflicts an enormous annual<br \/>\neconomic damage, which could be reduced by the installation of<br \/>\nappropriate monitoring devices. These should be simple, reliable, long<br \/>\nlasting, and should not require service or maintenance. The present<br \/>\nelectrochromic device is constructed in such a way that it uses the<br \/>\nmacrocell current in an active, chloride\u2010induced corrosion element as<br \/>\npower supply to trigger the colour change. This way, the system stays<br \/>\ninactive until corrosion occurs. The device consists of diheptyl<br \/>\nviologen in a liquid polymer electrolyte made from LiClO4 and<br \/>\npoly(ethylene glycol) with Mw = 400 g mol\u22121. The addition of viologen<br \/>\nlowers the resistance but causes no further changes in the<br \/>\nelectrochemical properties of the polymer electrolyte. Impedance spectra<br \/>\n indicate ion transport rather than capacitance effects to dominate the<br \/>\nelectrochemical properties. Experiments using direct current in the<br \/>\nmicroampere range show electrochromic switching times of several<br \/>\nminutes, which is sufficient for the intended monitoring application.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-5\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tSeptember 19, 2017\t\t<\/p>\n<p>M. Brenner <br \/>Tagung der GDCh-Fachgruppe Bauchemie, Weimar, 19. September <strong>2017<\/strong><\/p>\n<p><em>Funktionalisierung von Faseroberfl\u00e4chen f\u00fcr textilbewehrte Elastomere<\/em><\/p>\n<p>ABSTRACT:<br \/>\n Ma\u00dfgeblich f\u00fcr die Tragf\u00e4higkeit von textilbewehrten Strukturen ist die<br \/>\n Leistungsf\u00e4higkeit der Grenzfl\u00e4che. In zementgebundenen Systemen wird<br \/>\ndies meist durch formschl\u00fcssige Verbindungen (z. B. mit Epoxidharz<br \/>\ngetr\u00e4nkte und abgesandete Carbontextilien) erreicht. In polymeren<br \/>\nMaterialien ist ein derart steifer Verbund auf Grund der kleineren<br \/>\nE-Moduln h\u00e4ufig unerw\u00fcnscht, bei Elastomeren sogar kontraproduktiv.<br \/>Der<br \/>\n Vortrag berichtet \u00fcber eine Untersuchung zur gezielten chemischen<br \/>\nFunktionalisierung von Glas-, Basalt- und Carbonfasern zur Verst\u00e4rkung<br \/>\nvon Chloropren und EPDM. Die Fasern wurden jeweils mit<br \/>\nBis[3-(triethoxysilyl)propyl]tetrasulfid (TESPT) und<br \/>\n3-(Mercaptopropyl)trimethoxysilan (3-MPTMS) modifiziert. Zur Applikation<br \/>\n wurden die Substanzen mit gel\u00f6stem Elastomer versetzt und h\u00e4ndisch auf<br \/>\ndie Fasern aufgetragen. Anschlie\u00dfend wurden die modifizierten Fasern in<br \/>\neiner speziell gefertigten Form ins Elastomer einvulkanisiert und die<br \/>\nFaser-Matrix-Adh\u00e4sion per Ausziehversuch getestet. Bei Glas- und<br \/>\nBasaltfasern konnte eine Verbesserung des Verbunds um bis zu ca. 100 %<br \/>\nerreicht werden, bei der Modifikation von Carbonfasern l\u00e4sst sich der<br \/>\nVerbund um ca. 50 % verbessern.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-6\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tSeptember 19, 2017\t\t<\/p>\n<p>O. Weichold<\/p>\n<p>Tagung der GDCh-Fachgruppe Bauchemie, Weimar, 19. September <strong>2017<\/strong><\/p>\n<p><em>Polymere im Bauwesen \u2013 weiche Materialien in einer harten Welt<\/em><\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-3\/\" ><br \/>\n\t\t\t\tVer\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tSeptember 4, 2017\t\t<\/p>\n<p>O. Weichold, U. Antons <br \/>J. Infrastruct. Syst. <strong>2017<\/strong>, 23, 04017010<br \/><a href=\"https:\/\/doi.org\/10.1061\/(ASCE)IS.1943-555X.0000366\">Zum Artikel\u2192<\/a><\/p>\n<p><em>Assessing the Performance of Hydrophobing Agents on Concrete using Non-Destructive Single-Sided Nuclear Magnetic Resonance<\/em><\/p>\n<p>ABSTRACT:<br \/>\n Single-sided nuclear magnetic resonance is a nondestructive analytical<br \/>\ntechnique by which the ingress behavior of hydrophobing agents as well<br \/>\nas the properties and performance of the resulting hydrophobic layers<br \/>\ncan be assessed quantitatively. The method is used to compare the<br \/>\nbehavior of two low-molecular-weight hydrophobing agents,<br \/>\nn-octyltriethoxysilane and i-butyltriethoxysilane, on concrete and to<br \/>\nassess the properties of the resulting hydrophobic layers. For the octyl<br \/>\n derivative, ingress appears to be a simple transport process without<br \/>\npronounced polycondensation in the liquid phase or reaction with the<br \/>\npore walls because the detectable amount stays rather constant during<br \/>\nthe first day of observation. In addition, the thickness of the<br \/>\nresulting hydrophobic layer correlates well with the endpoint of the<br \/>\ntransport process. In contrast, the detectable amount of the butyl<br \/>\nderivative is reduced to half during the first 18 h, indicating either<br \/>\nsubstantial polycondensation or anchoring to the pore walls, and the<br \/>\nhydrophobic layer is approximately 25% thicker than indicated by the<br \/>\ningress profiles. The different behavior could originate in differences<br \/>\nin the molecular structure, particularly the steric demand of the alkyl<br \/>\nsubstituents, although this requires a more detailed study. Both<br \/>\ncompounds proved to be excellent hydrophobing agents since the layers<br \/>\nwere found to be impermeable when kept in a shallow water bath<br \/>\n(unidirectional transport through the layer) for more than 1 year. The<br \/>\nresults demonstrate that single-sided nuclear magnetic resonance is an<br \/>\nexcellent nondestructive tool for quality assurance when applying such<br \/>\nprotective layers.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-4\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tSeptember 3, 2017\t\t<\/p>\n<p>T. Juraschek<br \/> EUROCORR 2017, Prag, 3. September <strong>2017<\/strong><\/p>\n<p><em>Chemical, Non-Electronic Corrosion Indication Systems<\/em><\/p>\n<p>ABSTRACT:<br \/>\n Corrosion of the steel reinforcement in concrete causes an enormous<br \/>\neconomic damage. In particular, chloride-induced macroelement corrosion<br \/>\nof the reinforcement is one of the bottlenecks in the service life time<br \/>\ndesign of a majority of infrastructure buildings with a significant<br \/>\nexposition to chloride. Corrosion monitoring offers a possibility to<br \/>\ndetect the onset of corrosion events and start independent restoration<br \/>\nactions at a point, where costs can be kept at a minimum.<br \/>The<br \/>\npresentation focusses on the testing procedure and verification of the<br \/>\nprototype, under conditions simulating real-life corrosion events. Color<br \/>\n change is not observed when applying zero-load currents, but occurs<br \/>\nwithin minutes after raising either the potential or current to levels<br \/>\ntypical for corrosion events. The color change is persistent even after<br \/>\nturning the power source off. We applied potential controlled current<br \/>\nprofiles as well as voltage controlled current profiles to the device,<br \/>\nalso with respect to peak current profiles to show the response of the<br \/>\nsystem under realistic circumstances. Also, we investigate the influence<br \/>\n of zero-load current and voltage events during the passive state of the<br \/>\n reinforcement steel after passivation. Furthermore, experiments on<br \/>\nreinforcement steel and reinforced concrete samples are shown as a<br \/>\nproof-of-principle experiment.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/karriere\/\" ><br \/>\n\t\t\t\tKarriere\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJuli 1, 2017\t\t<\/p>\n<p> <em>Unsere Ehemalige Elena He\u00df tritt zum 1.7.2017 eine Stelle bei HeidelbergCement an.<\/em> <\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung-2\/\" ><br \/>\n\t\t\t\tVer\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJuni 7, 2017\t\t<\/p>\n<p>R. Schulte Holthausen, O. Weichold<br \/>J. Infrastruct. Syst. <strong>2017<\/strong>, 23, B4016006.<br \/><a href=\"https:\/\/doi.org\/10.1061\/(ASCE)IS.1943-555X.0000320\">Zum Artikel\u2192<\/a><\/p>\n<p><em>Non-destructive Evaluation of Thermal Damage in Concrete by Single-Sided Nuclear Magnetic Resonance<\/em><\/p>\n<p>ABSTRACT:<br \/>\n A new technology to coat concrete with coherent layers of glass by<br \/>\nflame-spraying is currently developed at the Institutes of Building<br \/>\nMaterials Research and Mineral Engineering of RWTH Aachen University in<br \/>\nGermany through a joint program. A major factor influencing the pull-off<br \/>\n strength of the flame-sprayed glass coating is thermally induced damage<br \/>\n in the underlying concrete substrate. In this article, the authors<br \/>\npresent a nondestructive test method using single-sided 1H nuclear<br \/>\nmagnetic resonance (NMR) to evaluate the thermally induced damage in<br \/>\nconcrete specimens. The particular NMR device used in this project<br \/>\nprimarily detects water and can qualitatively assess the water content<br \/>\nas well as the relative size of water-filled voids such as pores and<br \/>\ncracks. To do so, the specimens are water saturated and subsequently<br \/>\nanalyzed by NMR. Changes in the NMR-signal are interpreted in terms of<br \/>\nchange in porosity and development of cracks inside the cement stone as a<br \/>\n function of depth from the concrete surface.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/bachelorarbeit-2\/\" ><br \/>\n\t\t\t\tBachelorarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJuni 3, 2017\t\t<\/p>\n<p>Iva Rroshi<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Bachelorarbeit <br \/><em>Zur Untersuchung der Genauigkeit bei der Ermittlung des Bindemittelgehalts an Betonproben durch Methoden der chemischen Analytik<\/em><br \/><em>Investigation<br \/>\n of the accuracy conerning the determination of the binder content of<br \/>\nconcrete samples by methods of analytical chemistry<\/em><\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/masterarbeit-2\/\" ><br \/>\n\t\t\t\tMasterarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tM\u00e4rz 3, 2017\t\t<\/p>\n<p>Markus Brenner<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Masterarbeit <br \/><em>Funktionalisierung von Faseroberfl\u00e4chen f\u00fcr textilbewehrte Elastomerlager <\/em><br \/><em>Functionalization of Fiber Surfaces for Textile-Reinforced Elastomeric Bearings<\/em><\/p>\n<\/article>\n<article>\n\t\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-3\/\" ><br \/>\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"140\" src=\"https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Carpet-AG9-300x140-1.png\" alt=\"\" srcset=\"https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Carpet-AG9-300x140-1.png 300w, https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2022\/03\/Carpet-AG9-300x140-1-18x8.png 18w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n\t\t<\/a><\/p>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-3\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJanuar 25, 2017\t\t<\/p>\n<p>O. Weichold<br \/> Seminar \u201eStadtstra\u00dfen \/ Ortsdurchfahrten\u201c des VSVI Niedersachsen e.V., ABZ Mellendorf, 25. Januar <strong>2017<\/strong><\/p>\n<p><em>CARPET \u2013 Konfektionierter, aufrollbarer, polymerbasierter Stra\u00dfenbelag<\/em><\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/konferenzbeitrag-2\/\" ><br \/>\n\t\t\t\tKonferenzbeitrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJanuar 10, 2017\t\t<\/p>\n<p>T. Juraschek, O. Weichold<br \/> 6th International Conference on Concrete Repair (Concrete Solutions), Thessaloniki, <strong>2017<\/strong>, S. 207\u2013211.<\/p>\n<p><em>In-situ methods of detecting steel corrosion using permanent and non-electronic systems<\/em><\/p>\n<p>ABSTRACT:<br \/>\n Current systems for detecting corrosion of the reinforcement in<br \/>\nconcrete are realized via highly specialized systems that are<br \/>\ncommercially not available. Thus, these systems require complete<br \/>\ntechnical support by the installing company. This report shows a cheap,<br \/>\nefficient, independent, and reliable method to detect corrosion events<br \/>\nin concrete. The detection system is based on an electrochromic device,<br \/>\nwhich changes its colour upon the change of electrochemical potential<br \/>\ncaused by the corrosion process. The device is realized by a<br \/>\nlayer-by-layer setup of a transparent electrode, e. g. indium-doped tin<br \/>\noxide (ITO), followed by an electrochromic layer. The system is closed<br \/>\nby a metal counter electrode. The electrochromic layer can consist of an<br \/>\n electrochromic compound in a conducting polymer system. By connecting<br \/>\nsuch elements to a series of sensors, e. g. an anode ladder, it is<br \/>\npossible to monitor the corrosion progress and to verify the service<br \/>\nlife design of a structure.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/konferenzbeitrag\/\" ><br \/>\n\t\t\t\tKonferenzbeitrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tJanuar 10, 2017\t\t<\/p>\n<p>P. B. Sassmann, O. Weichold<br \/> 6th International Conference on Concrete Repair (Concrete Solutions), Thessaloniki, <strong>2017<\/strong>, S. 235\u2013238.<\/p>\n<p><em>Development<br \/>\n of Electrically Conductive Resins for the On-Site Fabrication of<br \/>\nSensors for Corrosion Detection and Risk Assessment in Reinforced<br \/>\nConcrete<br \/><\/em><\/p>\n<p>ABSTRACT: Assessing the risk of corrosion in<br \/>\nsteel-reinforced concrete can be accomplished using different types of<br \/>\nsensors such as anode ladders or multi-ring electrodes. The former are<br \/>\nunsuitable for retrofit installations, while the latter require the use<br \/>\nof embedding mortars to achieve conductive connections with the<br \/>\nsurrounding concrete. However, the porosity of the embedding mortar<br \/>\ndiffers from that of the concrete and the retrofitting action introduces<br \/>\n additional moisture. This interferes with resistivity and\/or potential<br \/>\nmeasurements and makes interpretations of the actual situation<br \/>\nproblematic. To circumvent these disadvantages, we have developed a<br \/>\nliquid reactive polymer resin with high electrical conductivity that can<br \/>\n be used to fabricate sensors directly inside drill holes. The mixture<br \/>\nsolidifies in a short time and its adhesive properties provide an<br \/>\nexcellent conductive connection to the concrete walls. The resin<br \/>\ncontains no water so that reliable values can be obtained immediately<br \/>\nafter solidification. By changing the additives both resistivity and<br \/>\npotential sensors can be obtained. The mixture is cheap so that large<br \/>\nsensor networks can be installed at reasonable costs. Such networks are<br \/>\nideal for the precise localization of corrosion events and more<br \/>\nimportantly for risk assessment in steel-reinforced structures.<\/p>\n<\/article>\n<\/section>\n<p>\t\t\t\t\t\t\t\t\t2016<\/p>\n<p><style>.elementor-2329 .elementor-element.elementor-element-f831ad8 .elementor-posts-container article{margin-bottom:35px;}.elementor-2329 .elementor-element.elementor-element-f831ad8 .elementor-post__thumbnail__link{width:25%;}.elementor-2329 .elementor-element.elementor-element-f831ad8 .elementor-post__meta-data span + span:before{content:\"\/\/\/\";}.elementor-2329 .elementor-element.elementor-element-f831ad8 .elementor-posts--skin-full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}.elementor-2329 .elementor-element.elementor-element-f831ad8 .elementor-posts--skin-archive_full_content a.elementor-post__thumbnail__link{margin-bottom:20px;}@media(max-width:767px){.elementor-2329 .elementor-element.elementor-element-f831ad8 .elementor-posts-container .elementor-post__thumbnail{padding-bottom:calc( 0.5 * 100% );}.elementor-2329 .elementor-element.elementor-element-f831ad8:after{content:\"0.5\";position:absolute;color:transparent;}.elementor-2329 .elementor-element.elementor-element-f831ad8 .elementor-post__thumbnail__link{width:100%;}}<\/style>\n<section data-id=\"a755ec0\" data-element_type=\"section\">\n<article>\n\t\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-2\/\" ><br \/>\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"287\" height=\"150\" src=\"https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2016\/12\/Kanal-AG9.png\" alt=\"\" srcset=\"https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2016\/12\/Kanal-AG9.png 287w, https:\/\/www.ibac-cp.rwth-aachen.de\/wp-content\/uploads\/2016\/12\/Kanal-AG9-18x9.png 18w\" sizes=\"(max-width: 287px) 100vw, 287px\" \/><br \/>\n\t\t<\/a><\/p>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag-2\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tDezember 2, 2016\t\t<\/p>\n<p>O. Weichold<br \/> nuBau \u2013 3. Tagung Nutzerorientierte Bausanierung, Weimar, 30. November \u2013 1. Dezember <strong>2016<\/strong><\/p>\n<p><em>Neue Methoden zur Auswertung von Sw-\u03c1-Beziehungen<\/em><\/p>\n<p>ABSTRACT:<br \/>\n Der spezifische elektrische Widerstand des Betons wird h\u00e4ufig<br \/>\nherangezogen, um Aussagen \u00fcber die Dauerhaftigkeit von<br \/>\nStahlbetonbauwerken zu treffen. Das Ziel der vorgestellten<br \/>\nUntersuchungen besteht darin, Wassergehalt-Widerstandsbeziehungen in<br \/>\nAbh\u00e4ngigkeit von relevanten Strukturparameten des Betons zu<br \/>\ncharakterisieren. Hierzu wurde ein Ansatz auf Basis von Archies Gesetz<br \/>\ngew\u00e4hlt, dessen Ergebnisse vorgestellt und mit dem \u00fcblicherweise<br \/>\nvelwendeten Modell verglichen werden. Es wird versucht, ausgew\u00e4hlte<br \/>\nParameter mit den Eigenschaften des Porensystems der Betone zu<br \/>\nkonelieren und so die M\u00f6glichkeiten des vorgestellten Ansatzes<br \/>\naufzuzeigen.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/vortrag\/\" ><br \/>\n\t\t\t\tVortrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tOktober 12, 2016\t\t<\/p>\n<p>P. B. Sassmann<br \/> 2nd International Conference on the Chemistry of Construction Materials (ICCCM), M\u00fcnchen, 10.\u201312. Oktober <strong>2016<\/strong><\/p>\n<p><em>Development of ion- conductive polymer resins for the on-site fabrication of corrosion sensors<\/em><\/p>\n<p>ABSTRACT:<br \/>\n Assessing the corrosion risk in steel-reinforced concrete can be<br \/>\naccomplished by implementing monitoring systems. For retrofit<br \/>\ninstallations the electrically conductive connection of sensors and<br \/>\nsurrounding concrete is currently realised with cement-based embedding<br \/>\nmortars. The use of such aqueous systems changes the moisture content of<br \/>\n the concrete close to the sensor, which interferes significantly with<br \/>\nresistivity and\/or potential measurements and makes interpretations of<br \/>\nthe measured values problematic.<br \/>To circumvent these disadvantages,<br \/>\nwe developed a liquid, reactive, non-aqueous polymer resin with high<br \/>\nelectrical conductivity that can be used to fabricate sensors directly<br \/>\ninside drill holes. This way, a close contact between sensor and the<br \/>\nconcrete walls is automatically provided. Since the polymer resin is not<br \/>\n aqueous, the moisture balance of the old concrete is not altered so<br \/>\nthat reliable values can be obtained immediately after solidification.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/buchbeitrag\/\" ><br \/>\n\t\t\t\tBuchbeitrag\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tMai 20, 2016\t\t<\/p>\n<p>J.-P. Lecomte, O. Weichold <br \/> in Y. Liu (Ed.), Silicone Dispersions (Surfactant Science Series Vol. 159), CRC Press, Boca Raton, <strong>2016<\/strong>, S. 301\u2013331.<\/p>\n<p><em>Silane-based Water Repellents for Inorganic Construction Materials<\/em><\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/masterarbeit\/\" ><br \/>\n\t\t\t\tMasterarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tMai 2, 2016\t\t<\/p>\n<p>Pia B. Sassmann<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Masterarbeit <br \/><em>Ionenleitende unges\u00e4ttigte Polyester zur Ankopplung von Zulagekathoden in Beton<\/em><br \/><em>Ion-conductive unsaturated polyester for contacting galvanic couples in concrete<\/em><\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/veroeffentlichung\/\" ><br \/>\n\t\t\t\tVer\u00f6ffentlichung\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tApril 2, 2016\t\t<\/p>\n<p>D. Heinze, Th. Mang, C. Popescu, O. Weichold<br \/>Thermochim. Acta 2016, 637, 143\u2013153<br \/><a href=\"https:\/\/doi.org\/10.1016\/j.tca.2016.05.015\">Zum Artikel\u2192<\/a><\/p>\n<p>Effect<br \/>\n of side chain length and degree of polymerization on the decomposition<br \/>\nand crystallization behaviour of chlorinated poly(vinyl ester) oligomers<br \/>ABSTRACT:<br \/>\n Four members of a homologous series of chlorinated poly(vinyl ester)<br \/>\noligomers CCl3\u2013(CH2CH(OCO(CH2)mCH3))n\u2013Cl with degrees of polymerization<br \/>\nof 10 and 20 were prepared by telomerisationusing carbon tetrachloride.<br \/>\nThe number of side chain carbon atoms ranges from 2 (poly(vinyl acetate)<br \/>\n to 18 (poly(vinyl stearate)). The effect of the n-alkyl side chain<br \/>\nlength and of the degree of polymerizationon the thermal stability and<br \/>\ncrystallization behaviour of the synthesized compounds was<br \/>\ninvestigated.All oligomers degrade in two major steps by first losing<br \/>\nHCl and side chains with subsequent breakdownof the backbone. The<br \/>\nmembers with short side chains, up to poly(vinyl octanoate), are<br \/>\namorphous andshow internal plasticization, whereas those with high<br \/>\nnumber of side chain carbon atoms are semi-crystalline due to side-chain<br \/>\n crystallization. A better packing for poly(vinyl stearate) is also<br \/>\nnoticeable.The glass transition and melting temperatures as well as the<br \/>\nonset temperature of decomposition areinfluenced to a larger extent by<br \/>\nthe side chain length than by the degree of polymerization.<br \/>\nThermalstability is improved if both the size and number of side chains<br \/>\nincrease, but only a long side chaincauses a significant increase of the<br \/>\n resistance to degradation. This results in a stabilization of PVAc<br \/>\nsothat oligomers from poly(vinyl octanoate) on are stable under<br \/>\natmospheric conditions. Thus, the way todesign stable, chlorinated PVEs<br \/>\noligomers is to use a long n-alkyl side chain.<\/p>\n<\/article>\n<article>\n<h3>\n\t\t\t<a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/bachelorarbeit\/\" ><br \/>\n\t\t\t\tBachelorarbeit\t\t\t<\/a><br \/>\n\t\t<\/h3>\n<p>\t\t\tApril 2, 2016\t\t<\/p>\n<style>.elementor-widget .tippy-tooltip .tippy-content{text-align:center;}<\/style>\n<section data-id=\"c34b2ee\" data-element_type=\"section\">\n<p>Tim Kurschildgen<\/p>\n<p>Wir gratulieren zum erfolgreichen Abschluss der Bachelorarbeit <br \/>\n<em>Einfluss der Copolymerisation funktioneller Monomere im Porenraum auf die mechanischen Eigenschaften von M\u00f6rtel<\/em><br \/><em>Copolymerisation of functional monomers in the pore system of mortars and its influence on the mechanical properties<\/em><\/p>\n<\/section>\n<\/article>\n<\/section>\n<p>Zur\u00fcck zum Forschungsfeld <a href=\"https:\/\/www.ibac-cp.rwth-aachen.de\/ubersicht\/polymere-materialien\/\">Polymere Materialien \u2192<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Poly &#8211; News 2022 2021 2020 2019 2018 2017 2016 2022 Neue Ver\u00f6ffentlichung M\u00e4rz 3, 2022 T. B. Mrohs, O. Weichold Multivalent Allylammonium-Based Cross-Linkers for the Synthesis of Homogeneous, Highly Swelling Diallyldimethylammonium Chloride Hydrogels Gels 2022, 8, 100 (open access) Neuer Doktorand Januar 19, 2022 Seit Januar unterst\u00fctzt Nils M\u00fcnstermann die Arbeitsgruppe im Bereich bio-basierte [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"cybocfi_hide_featured_image":"","footnotes":""},"class_list":["post-1698","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/pages\/1698","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/comments?post=1698"}],"version-history":[{"count":127,"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/pages\/1698\/revisions"}],"predecessor-version":[{"id":2361,"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/pages\/1698\/revisions\/2361"}],"wp:attachment":[{"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/media?parent=1698"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}