{"id":172070,"date":"2026-01-09T07:37:00","date_gmt":"2026-01-09T06:37:00","guid":{"rendered":"https:\/\/renewable-carbon.eu\/news\/?p=172070"},"modified":"2026-01-06T11:03:43","modified_gmt":"2026-01-06T10:03:43","slug":"skz-launches-new-research-project-closet-for-sustainable-recycling-of-used-textiles","status":"publish","type":"post","link":"https:\/\/renewable-carbon.eu\/news\/skz-launches-new-research-project-closet-for-sustainable-recycling-of-used-textiles\/","title":{"rendered":"SKZ launches new research project \u201cCloseT\u201d for sustainable recycling of used textiles"},"content":{"rendered":"\n\n
\n
\"Sampling
Sampling of reaction products from the continuous chemical recycling process.
\u00a9 Luca Hoffmannbeck, SKZ<\/figcaption><\/figure><\/div>\n\n\n

With the \u201cCloseT\u201d research project, the SKZ Plastics Center is working with the Fraunhofer Institute for Manufacturing Technology and Applied Materials Research IFAM to develop an innovative process for recycling mixed waste textile fibers. The aim is to develop an industrially viable, continuous chemical recycling process using solvolysis.<\/strong><\/p>\n\n\n\n

Reducing waste and conserving resources<\/h3>\n\n\n\n

Until now, old textiles have mainly been recycled thermally, which irretrievably destroys valuable polymer resources and prevents the opportunity for sustainable reuse. The \u201cCloseT\u201d project focuses on chemical recycling using solvolysis. This involves chemically recycling mixed old textile fibers in a continuous process using a twin-screw extruder. The reaction products obtained in the recycling process are to be used directly as raw materials in plastics processing. <\/p>\n\n\n\n

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\u201cWe want to create a sustainable alternative that not only conserves resources but also opens up new value chains,\u201d explains Dr. Hatice Malatyali, project manager at SKZ.<\/strong><\/p>\n<\/blockquote>\n\n\n\n

Material separation and industrial implementation<\/strong><\/h3>\n\n\n\n

Suitable synthesis routes are first developed in the laboratory and then transferred to the continuous process. One focus is on the efficient separation of mixed fibers such as cotton and PET. Cellulose acetate is to be produced from the cellulose fibers obtained, while the degraded PET fractions are repolymerized to rPET.<\/p>\n\n\n\n

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\u201cWith this project, we are making an important contribution to reducing textile waste and strengthening the circular economy,\u201d emphasizes Prof. Dr. Andreas Hartwig from the Fraunhofer Institute for Manufacturing Technology and Applied Materials Research IFAM<\/strong>.<\/p>\n<\/blockquote>\n\n\n\n

Funding and duration<\/strong><\/h3>\n\n\n\n

The \u201cCloseT\u201d research project (Ref. 9D867) will be funded by the Volkswagen Foundation from November 1, 2025, to October 31, 2029, through the \u201cCircularity with Recycled and Biogenic Raw Materials\u201d funding initiative. SKZ \u2013 KFE gGmbH and the Fraunhofer Institute for Manufacturing Technology and Applied Materials Research IFAM would like to thank the Volkswagen Foundation for its support.<\/p>\n","protected":false},"excerpt":{"rendered":"

With the \u201cCloseT\u201d research project, the SKZ Plastics Center is working with the Fraunhofer Institute for Manufacturing Technology and Applied Materials Research IFAM to develop an innovative process for recycling mixed waste textile fibers. The aim is to develop an industrially viable, continuous chemical recycling process using solvolysis. Reducing waste and conserving resources Until now, […]<\/p>\n","protected":false},"author":59,"featured_media":172101,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","nova_meta_subtitle":"Together with the Fraunhofer Institute for Manufacturing Technology and Applied Materials Research IFAM they will develop an innovative process for recycling mixed waste textile fibers","footnotes":""},"categories":[17143],"tags":[17202,10416,10453,22957],"supplier":[1879,906,23829],"class_list":["post-172070","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recycling","tag-chemicalrecycling","tag-circulareconomy","tag-recycling","tag-textilewaste","supplier-fraunhofer-institut-fuer-fertigungstechnik-und-angewandte-materialforschung-ifam","supplier-sueddeutsches-kunststoff-zentrum-skz","supplier-volkswagenstiftung"],"_links":{"self":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/172070","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=172070"}],"version-history":[{"count":0,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/172070\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media\/172101"}],"wp:attachment":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media?parent=172070"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/categories?post=172070"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/tags?post=172070"},{"taxonomy":"supplier","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/supplier?post=172070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}