{"id":172857,"date":"2026-02-04T07:29:00","date_gmt":"2026-02-04T06:29:00","guid":{"rendered":"https:\/\/renewable-carbon.eu\/news\/?p=172857"},"modified":"2026-02-03T15:39:59","modified_gmt":"2026-02-03T14:39:59","slug":"new-recycling-method-for-textiles","status":"publish","type":"post","link":"https:\/\/renewable-carbon.eu\/news\/new-recycling-method-for-textiles\/","title":{"rendered":"New Recycling Method for Textiles"},"content":{"rendered":"\n\n
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\"Nika
Nika Depope is recycling textiles in the lab. \u00a9 TU Wien\u00a0<\/figcaption><\/figure><\/div>\n\n\n

We are producing more textiles than ever before: worldwide, well over one hundred million tons of textiles are manufactured every year \u2013 more than twice as much as in the year 2000. This makes it increasingly important not to simply throw away old textiles, but to recover them in an environmentally friendly way.<\/strong><\/p>\n\n\n\n

That is often not easy \u2013 especially when it comes to blended fabrics, such as mixtures of cotton and polyester. At TU Wien, a new method has now been developed to separate and recycle such mixed textiles efficiently \u2013 in a remarkably simple way, using menthol and benzoic acid, two non-toxic substances.<\/p>\n\n\n\n

Five minutes is all it takes<\/h3>\n\n\n\n
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\u201cWhat may be surprising at first: both menthol and benzoic acid are solid at room temperature. But together they form a liquid \u2013 a so-called deep eutectic solvent. This novel liquid is a powerful, non-toxic and easy-to-produce solvent with a wide range of possible applications,\u201d explains Andreas Bartl from the Institute of Chemical, Environmental and Bioscience Engineering<\/strong>.<\/p>\n<\/blockquote>\n\n\n\n

When this new solvent is heated to 216 \u00b0C, a fascinating process begins: within just five minutes, the components of the mixed textiles separate from each other. The polyester dissolves completely, while the cotton remains unchanged. It can then be washed, dried and reused, and the polyester portion precipitates upon cooling, is separated, and can also be recycled. With recovery rates of 100% for cotton and 97% for polyester, the process achieves an almost complete recycling \u2013 a result that conventional methods have not been able to reach so far.<\/p>\n\n\n\n

Separating, not breaking down<\/h3>\n\n\n\n
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\u201cThe truly remarkable thing about this new process is that neither the cotton nor the polyester is damaged or chemically altered,\u201d says Andreas Bartl<\/strong>. \u201cOur analyses show that the cotton fibres remain stable and retain their typical properties \u2013 they can even be spun into new yarns again. And the polyester also remains unchanged: its structure and melting temperature are the same as before. This demonstrates how gentle and efficient this recycling process is.\u201d<\/p>\n<\/blockquote>\n\n\n\n

Until now, polyester has usually been chemically broken down during recycling, split into smaller molecular building blocks. The new method, by contrast, preserves the polymer chains intact \u2013 which means that the material quality is maintained.<\/p>\n\n\n\n

A promising approach<\/h3>\n\n\n\n

So far, the process has only been tested in the laboratory, but the research team led by Nika Depope and Andreas Bartl sees great industrial potential in it. Both the recovered cotton and the recycled polyester can be used for a wide range of applications \u2013 for example for new yarns, fibres, nonwovens or technical textiles.<\/p>\n\n\n\n

The team is currently working on making the process even more energy-efficient, since the required temperature of 216 \u00b0C is a drawback in terms of energy consumption. However, the researchers are confident that further optimisations are possible \u2013 and that the method could in future be used on an industrial scale.<\/p>\n\n\n\n

The new technology was developed at the <\/em>Josef Ressel Center ResTex<\/em>, opens an external URL in a new window<\/a> of the Christian Doppler Research Association. For this purpose, TU Wien operates its own external module within the center. With support from TU Wien\u2019s Patent and License Management, the technology has already been filed for patent.<\/em><\/p>\n\n\n\n

Original publication<\/h3>\n\n\n\n

N.Depope et al., Deep eutectic solvent as a solution for polyester\/cotton textile recycling, Waste Management 208 (2025). <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

We are producing more textiles than ever before: worldwide, well over one hundred million tons of textiles are manufactured every year \u2013 more than twice as much as in the year 2000. This makes it increasingly important not to simply throw away old textiles, but to recover them in an environmentally friendly way. That is […]<\/p>\n","protected":false},"author":114,"featured_media":172863,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","nova_meta_subtitle":"A novel, non-toxic solvent makes it possible to recycle mixed-fibre textiles almost perfectly","footnotes":""},"categories":[17143],"tags":[10416,15212,10453,24515],"supplier":[],"class_list":["post-172857","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recycling","tag-circulareconomy","tag-polyester","tag-recycling","tag-textilerecycling"],"_links":{"self":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/172857","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\/114"}],"replies":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/comments?post=172857"}],"version-history":[{"count":0,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/172857\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media\/172863"}],"wp:attachment":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media?parent=172857"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/categories?post=172857"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/tags?post=172857"},{"taxonomy":"supplier","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/supplier?post=172857"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}