{"id":2265,"date":"2020-05-05T07:47:00","date_gmt":"2020-05-05T07:47:00","guid":{"rendered":"https:\/\/www.ibac-cp.rwth-aachen.de\/?p=2265"},"modified":"2022-03-03T11:18:08","modified_gmt":"2022-03-03T11:18:08","slug":"veroeffentlichung-10","status":"publish","type":"post","link":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/aktuelles\/2020\/veroeffentlichung-10\/","title":{"rendered":"Publication"},"content":{"rendered":"<p>M. Brenner, C. Popescu, O. Weichold <br>Appl. Sci. 2020 <br><a href=\"https:\/\/doi.org\/10.3390\/app10062150\">To the article\u2192<\/a><\/p>\n\n\n\n<p><em>Anti-Frothing Effect of Poultry Feathers in Bio-Based, Polycondensation-Type Thermoset Composites<\/em><\/p>\n\n\n\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>","protected":false},"excerpt":{"rendered":"<p>M. Brenner, C. Popescu, O. Weichold Appl. Sci. 2020 Zum Artikel\u2192 Anti-Frothing Effect of Poultry Feathers in Bio-Based, Polycondensation-Type Thermoset Composites 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 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":2266,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"cybocfi_hide_featured_image":"","footnotes":""},"categories":[12,17],"tags":[],"class_list":["post-2265","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-poly-news","category-poly-news2020"],"_links":{"self":[{"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/posts\/2265","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/comments?post=2265"}],"version-history":[{"count":1,"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/posts\/2265\/revisions"}],"predecessor-version":[{"id":2267,"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/posts\/2265\/revisions\/2267"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/media\/2266"}],"wp:attachment":[{"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/media?parent=2265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/categories?post=2265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ibac-cp.rwth-aachen.de\/en\/wp-json\/wp\/v2\/tags?post=2265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}