{"id":625,"date":"2026-03-15T14:45:29","date_gmt":"2026-03-15T13:45:29","guid":{"rendered":"https:\/\/blog.rwth-aachen.de\/bauchemie\/?p=625"},"modified":"2026-04-15T10:53:19","modified_gmt":"2026-04-15T08:53:19","slug":"neue-veroeffentlichung-chitosanbasierter-holzklebstoff","status":"publish","type":"post","link":"https:\/\/blog.rwth-aachen.de\/bauchemie\/en\/2026\/03\/15\/neue-veroeffentlichung-chitosanbasierter-holzklebstoff\/","title":{"rendered":"New Publication: From Shell Waste to Strong Wood Glue: The Future of Bio-Based Adhesives"},"content":{"rendered":"<div class=\"twoclick_social_bookmarks_post_625 social_share_privacy clearfix 1.6.4 locale-en_US sprite-en_US\"><\/div><div class=\"twoclick-js\"><script type=\"text\/javascript\">\/* <![CDATA[ *\/\njQuery(document).ready(function($){if($('.twoclick_social_bookmarks_post_625')){$('.twoclick_social_bookmarks_post_625').socialSharePrivacy({\"txt_help\":\"Wenn Sie diese Felder durch einen Klick aktivieren, werden Informationen an Facebook, Twitter, Flattr, Xing, t3n, LinkedIn, Pinterest oder Google eventuell ins Ausland \\u00fcbertragen und unter Umst\\u00e4nden auch dort gespeichert. N\\u00e4heres erfahren Sie durch einen Klick auf das <em>i<\\\/em>.\",\"settings_perma\":\"Dauerhaft aktivieren und Daten\\u00fcber-tragung zustimmen:\",\"info_link\":\"http:\\\/\\\/www.heise.de\\\/ct\\\/artikel\\\/2-Klicks-fuer-mehr-Datenschutz-1333879.html\",\"uri\":\"https:\\\/\\\/blog.rwth-aachen.de\\\/bauchemie\\\/en\\\/2026\\\/03\\\/15\\\/neue-veroeffentlichung-chitosanbasierter-holzklebstoff\\\/\",\"post_id\":625,\"post_title_referrer_track\":\"New+Publication%3A+From+Shell+Waste+to+Strong+Wood+Glue%3A+The+Future+of+Bio-Based+Adhesives\",\"display_infobox\":\"on\"});}});\n\/* ]]> *\/<\/script><\/div><p><\/p>\n<p data-start=\"0\" data-end=\"468\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-632\" src=\"https:\/\/blog.rwth-aachen.de\/bauchemie\/files\/2026\/03\/DSC_7517-Kopie-1024x683.jpg\" alt=\"\" width=\"1024\" height=\"683\" srcset=\"https:\/\/blog.rwth-aachen.de\/bauchemie\/files\/2026\/03\/DSC_7517-Kopie-1024x683.jpg 1024w, https:\/\/blog.rwth-aachen.de\/bauchemie\/files\/2026\/03\/DSC_7517-Kopie-300x200.jpg 300w, https:\/\/blog.rwth-aachen.de\/bauchemie\/files\/2026\/03\/DSC_7517-Kopie-768x512.jpg 768w, https:\/\/blog.rwth-aachen.de\/bauchemie\/files\/2026\/03\/DSC_7517-Kopie-1536x1024.jpg 1536w, https:\/\/blog.rwth-aachen.de\/bauchemie\/files\/2026\/03\/DSC_7517-Kopie-2048x1365.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p data-start=\"0\" data-end=\"468\">Sustainable adhesives are becoming increasingly important, especially in applications where petrochemical resins containing problematic substances such as formaldehyde still dominate. Our latest study now shows that <strong data-start=\"216\" data-end=\"249\">chitosan-based wood adhesives<\/strong> are a promising bio-based alternative. Chitosan is derived from chitin, a natural polymer found, among other sources, in the shells of crustaceans and generated in large quantities as a by-product of the food industry.<\/p>\n<p data-start=\"470\" data-end=\"897\">Two fully bio-based adhesive systems were investigated: <strong data-start=\"526\" data-end=\"548\">chitosan itaconate<\/strong> and <strong data-start=\"553\" data-end=\"573\">chitosan maleate<\/strong>. Both are based on renewable raw materials and were specifically developed for wood bonding. What is particularly interesting is that the acids used not only solubilize the chitosan, but also enable curing into a stable network. Both acids can be obtained via biofermentation, making the adhesive system entirely bio-based.<\/p>\n<p data-start=\"899\" data-end=\"1361\">The results are remarkable: in the dry state, both adhesives met the requirements of <strong data-start=\"984\" data-end=\"1009\">DIN EN 12765 class C1<\/strong> and exhibited so-called <strong data-start=\"1034\" data-end=\"1059\">cohesive wood failure<\/strong>. This means that under mechanical stress, it was not the adhesive bond that failed, but the wood itself. <strong data-start=\"1165\" data-end=\"1187\">Chitosan itaconate<\/strong>, in particular, also performed well under wet conditions: after treatment in boiling water, its bond strength remained at <strong data-start=\"1310\" data-end=\"1323\">2.7 N\/mm\u00b2<\/strong>, close to the demanding <strong data-start=\"1348\" data-end=\"1360\">C4 class<\/strong>.<\/p>\n<p data-start=\"1363\" data-end=\"1646\">Chitosan itaconate is therefore a promising candidate for wood bonding applications requiring <strong data-start=\"1457\" data-end=\"1489\">moderate moisture resistance<\/strong>, such as interior construction or semi-exposed uses. Chitosan maleate also showed good dry adhesion, but lost significant stability upon contact with water.<\/p>\n<p data-start=\"1648\" data-end=\"1955\">In conclusion, <strong data-start=\"1663\" data-end=\"1744\">bio-based wood adhesives made from chitosan are far more than a niche concept<\/strong>. Chitosan itaconate in particular combines renewable raw materials with convincing adhesive performance and could represent an important step toward more environmentally friendly materials in the wood industry.<\/p>\n<p data-start=\"1957\" data-end=\"2189\">N. M\u00fcnstermann, O. Weichold<br data-start=\"1988\" data-end=\"1991\" \/><em data-start=\"1991\" data-end=\"2078\">Chitosan-itaconate and chitosan-maleate as fully bio-based sustainable wood adhesives<\/em><br data-start=\"2078\" data-end=\"2081\" \/><em data-start=\"2081\" data-end=\"2130\">International Journal of Adhesion and Adhesives<\/em>, 2026, 149, 104327 <a href=\"https:\/\/doi.org\/10.1016\/j.ijadhadh.2026.104327\">https:\/\/doi.org\/10.1016\/j.ijadhadh.2026.104327<\/a><\/p>\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Sustainable adhesives are becoming increasingly important, especially in applications where petrochemical resins containing problematic substances such as formaldehyde still dominate. Our latest study now shows that chitosan-based wood adhesives are [&hellip;]<\/p>\n","protected":false},"author":2965,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"c2c_always_allow_admin_comments":false,"footnotes":""},"categories":[3,13,5],"tags":[],"class_list":["post-625","post","type-post","status-publish","format-standard","hentry","category-chitosan","category-klebstoff","category-publication"],"_links":{"self":[{"href":"https:\/\/blog.rwth-aachen.de\/bauchemie\/en\/wp-json\/wp\/v2\/posts\/625","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.rwth-aachen.de\/bauchemie\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.rwth-aachen.de\/bauchemie\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.rwth-aachen.de\/bauchemie\/en\/wp-json\/wp\/v2\/users\/2965"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.rwth-aachen.de\/bauchemie\/en\/wp-json\/wp\/v2\/comments?post=625"}],"version-history":[{"count":8,"href":"https:\/\/blog.rwth-aachen.de\/bauchemie\/en\/wp-json\/wp\/v2\/posts\/625\/revisions"}],"predecessor-version":[{"id":636,"href":"https:\/\/blog.rwth-aachen.de\/bauchemie\/en\/wp-json\/wp\/v2\/posts\/625\/revisions\/636"}],"wp:attachment":[{"href":"https:\/\/blog.rwth-aachen.de\/bauchemie\/en\/wp-json\/wp\/v2\/media?parent=625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.rwth-aachen.de\/bauchemie\/en\/wp-json\/wp\/v2\/categories?post=625"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.rwth-aachen.de\/bauchemie\/en\/wp-json\/wp\/v2\/tags?post=625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}