{"id":123709,"date":"2023-03-09T07:23:00","date_gmt":"2023-03-09T06:23:00","guid":{"rendered":"https:\/\/renewable-carbon.eu\/news\/?p=123709"},"modified":"2023-03-06T12:03:37","modified_gmt":"2023-03-06T11:03:37","slug":"cross-linked-chitosan-tannin-extract-as-a-biodegradable-and-repulpable-coating-for-paper-with-excellent-oil-resistance-gas-barrier-and-uv-shielding","status":"publish","type":"post","link":"https:\/\/renewable-carbon.eu\/news\/cross-linked-chitosan-tannin-extract-as-a-biodegradable-and-repulpable-coating-for-paper-with-excellent-oil-resistance-gas-barrier-and-uv-shielding\/","title":{"rendered":"Cross-linked chitosan\/tannin extract as a biodegradable and repulpable coating for paper with excellent oil-resistance, gas barrier and UV-shielding"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><\/h2>\n\n\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"376\" height=\"200\" src=\"https:\/\/renewable-carbon.eu\/news\/media\/2023\/03\/1-s2.0-S0300944022006968-ga1.jpg\" alt=\"\" class=\"wp-image-123723\" srcset=\"https:\/\/renewable-carbon.eu\/news\/media\/2023\/03\/1-s2.0-S0300944022006968-ga1.jpg 376w, https:\/\/renewable-carbon.eu\/news\/media\/2023\/03\/1-s2.0-S0300944022006968-ga1-300x160.jpg 300w, https:\/\/renewable-carbon.eu\/news\/media\/2023\/03\/1-s2.0-S0300944022006968-ga1-150x80.jpg 150w\" sizes=\"auto, (max-width: 376px) 100vw, 376px\" \/><\/figure><\/div>\n\n\n\n<p>A series of cross-linking copolymers of chitosan and tannin extract-based epoxy (CS\/<em>x<\/em>TE,\u00a0<em>x<\/em>\u00a0=\u00a00.125, 0.25, 0.5 and 1) were designed and synthesized using different contents of low-cost tannin extract-based epoxy (derived from bark). The resulting CS\/<em>x<\/em>TE were used as coatings for paper, and they endowed the paper with robust barrier properties to oil, moisture and oxygen because of the dense and continuous film formed by CS\/<em>x<\/em>TE on the surface of the paper. Compared with uncoated paper, the Kit rating of CS\/1TE (<em>x<\/em>\u00a0=\u00a01)-coated paper increased from 0\/12 to 12\/12, the water vapor transmittance rate decreased from 1252.9 to 298.6\u00a0g\/m<sup>2<\/sup>\u00b7d, and the oxygen permeability decreased from 597.1 to 136.2\u00a0cm<sup>3<\/sup>\/m<sup>2<\/sup>\u00b7d\u00b70.1\u00a0MPa. <\/p>\n\n\n\n<p>Furthermore, due to the UV-shielding of tannin extract-based epoxy, the CS\/<em>x<\/em>TE-coated paper exhibited excellent UV-aging resistance. The mechanical properties and water resistance of CS\/1TE-coated paper were also increased compared with those of uncoated paper due to the dense cross-linked coating. Additionally, the results suggest that CS\/1TE is repulpable and biodegradable. This work not only provides an efficient strategy for high-value applications of waste bark extract but also shows a considerable application advantage in the paper packaging industry.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Reference<\/h3>\n\n\n\n<p>&#8220;Cross-linked chitosan\/tannin extract as a biodegradable and repulpable coating for paper with excellent oil-resistance, gas barrier and UV-shielding&#8221;, <a rel=\"noreferrer noopener\" href=\"https:\/\/doi.org\/10.1016\/j.porgcoat.2022.107399\" target=\"_blank\">https:\/\/doi.org\/10.1016\/j.porgcoat.2022.107399<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A series of cross-linking copolymers of chitosan and tannin extract-based epoxy (CS\/xTE,\u00a0x\u00a0=\u00a00.125, 0.25, 0.5 and 1) were designed and synthesized using different contents of low-cost tannin extract-based epoxy (derived from bark). The resulting CS\/xTE were used as coatings for paper, and they endowed the paper with robust barrier properties to oil, moisture and oxygen because [&#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":"none","nova_meta_subtitle":"A new study shows chitosan-\/tanninextract based epoxy as biodegradable and recyclable coating for paper - with excellent water, oil and UV-aging resistance","footnotes":""},"categories":[5572],"tags":[11270,5838,15082,12348,7105,13222],"supplier":[20785],"class_list":["post-123709","post","type-post","status-publish","format-standard","hentry","category-bio-based","tag-biodegradability","tag-bioeconomy","tag-chitosan","tag-coatings","tag-packaging","tag-paper","supplier-nanjing-forestry-university"],"_links":{"self":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/123709","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=123709"}],"version-history":[{"count":0,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/123709\/revisions"}],"wp:attachment":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media?parent=123709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/categories?post=123709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/tags?post=123709"},{"taxonomy":"supplier","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/supplier?post=123709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}