{"id":63512,"date":"2019-05-27T07:23:37","date_gmt":"2019-05-27T05:23:37","guid":{"rendered":"https:\/\/renewable-carbon.eu\/news\/?p=63512"},"modified":"2019-05-22T12:03:14","modified_gmt":"2019-05-22T10:03:14","slug":"researchers-develop-biobased-self-healing-elastomer-derived-from-lignin","status":"publish","type":"post","link":"https:\/\/renewable-carbon.eu\/news\/researchers-develop-biobased-self-healing-elastomer-derived-from-lignin\/","title":{"rendered":"Researchers develop biobased, self-healing elastomer derived from lignin"},"content":{"rendered":"<p><strong>Scientists at Oak Ridge National Laboratory (ORNL) have developed a new, stretchy, plant-derived material that outperforms the adhesiveness of the natural chemical that gives mussels the ability to stick to rocks and ships.<\/strong><\/p>\n<p>This bio-based material\u2014composed of lignin (the substance that gives plants sturdiness) and epoxy\u2014can self-heal and elongate up to 2,000%. Converting lignin into well- defined compounds is often challenged by structural complexation and inorganic contamination induced by the pulping process.<\/p>\n<p>To achieve these results, researchers developed a unique method to extract a specific form of lignin. Instead of breaking down lignin into small molecules, we extracted a uniform and rigid oligomer from the lignin waste stream. The multifunctional polyphenol oligomer containing carboxylic acid, alcohol, and phenol groups is highly reactive and brings stiffness into the material matrix.<\/p>\n<figure id=\"attachment_63514\" aria-describedby=\"caption-attachment-63514\" style=\"width: 500px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-63514 size-full\" src=\"https:\/\/renewable-carbon.eu\/news\/wp-content\/uploads\/2019\/05\/wImage.php_5.png\" alt=\"wImage.php\" width=\"500\" height=\"270\" srcset=\"https:\/\/renewable-carbon.eu\/news\/media\/2019\/05\/wImage.php_5.png 500w, https:\/\/renewable-carbon.eu\/news\/media\/2019\/05\/wImage.php_5-300x162.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><figcaption id=\"caption-attachment-63514\" class=\"wp-caption-text\">Researchers developed a new material using epoxy mixed with a form of lignin naturally rich in hydroxyl groups that can self-heal if sliced and elongate up to 2,000%. Photo courtesy of ORNL<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p>The resulting molecular structure creates a super-sticky, Tough, super-sticky elastomers are economically prepared from this oligomer by a reaction with epoxy-terminated polyethylene glycol, without needing any solvent. The highly elastic material can heal quickly, where broken, through hydrogen bonding<\/p>\n<p>This extracted lignin shows promise for a range of industrial applications including coatings, glues, and hydrogels. The results, published in ACS Macro Letters, demonstrate new potential for a small, but high-value portion of the lignin waste stream from biorefineries and the pulp and paper industry.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Scientists at Oak Ridge National Laboratory (ORNL) have developed a new, stretchy, plant-derived material that outperforms the adhesiveness of the natural chemical that gives mussels the ability to stick to rocks and ships. This bio-based material\u2014composed of lignin (the substance that gives plants sturdiness) and epoxy\u2014can self-heal and elongate up to 2,000%. Converting lignin into [&#8230;]<\/p>\n","protected":false},"author":59,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","nova_meta_subtitle":"","footnotes":""},"categories":[5572],"tags":[5847,15803,11828],"supplier":[2437],"class_list":["post-63512","post","type-post","status-publish","format-standard","hentry","category-bio-based","tag-bioplastics","tag-elastomers","tag-lignin","supplier-oak-ridge-national-laboratory"],"_links":{"self":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/63512","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/users\/59"}],"replies":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/comments?post=63512"}],"version-history":[{"count":0,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/63512\/revisions"}],"wp:attachment":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media?parent=63512"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/categories?post=63512"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/tags?post=63512"},{"taxonomy":"supplier","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/supplier?post=63512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}