Upcycling of cotton polyester blended textile waste to new man-made cellulose fibers

Simone Haslinger; Michael Hummel; Adina Anghelescu-Hakala; Marjo Määttänen; Herbert Sixta

doi:10.1016/j.wasman.2019.07.040

Upcycling of cotton polyester blended textile waste to new man-made cellulose fibers

Simone Haslinger, Michael Hummel, Adina Anghelescu-Hakala, Marjo Määttänen, Herbert Sixta

Research output: Contribution to journal › Article › Scientific › peer-review

7 Citations (Scopus)

Abstract

The creation of a circular economy for cellulose based textile waste is supported by the development of an upcycling method for cotton polyester blended waste garments. We present a separation procedure for cotton and polyester using [DBNH] [OAc], a superbase based ionic liquid, which allows the selective dissolution of the cellulose component. After the removal of PET, the resulting solution could be employed to dry-jet wet spin textile grade cellulose fibers down to the microfiber range (0.75–2.95 dtex) with breaking tenacities (27–48 cN/tex) and elongations (7–9%) comparable to commercial Lyocell fibers made from high-purity dissolving pulp. The treatment time in [DBNH] [OAc] was found to reduce the tensile properties (<52%) and the molar mass distribution (<51%) of PET under certain processing conditions.

Original language	English
Pages (from-to)	88-96
Number of pages	9
Journal	Waste Management
Volume	97
DOIs	https://doi.org/10.1016/j.wasman.2019.07.040
Publication status	Published - Sep 2019
MoE publication type	A1 Journal article-refereed

Keywords

Cellulose PET separation
Dry-jet wet spinning
Ioncell
Ionic liquid
Polyethylene terephthalate
Textile recycling

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10.1016/j.wasman.2019.07.040

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Haslinger, S., Hummel, M., Anghelescu-Hakala, A., Määttänen, M., & Sixta, H. (2019). Upcycling of cotton polyester blended textile waste to new man-made cellulose fibers. Waste Management, 97, 88-96. https://doi.org/10.1016/j.wasman.2019.07.040

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abstract = "The creation of a circular economy for cellulose based textile waste is supported by the development of an upcycling method for cotton polyester blended waste garments. We present a separation procedure for cotton and polyester using [DBNH] [OAc], a superbase based ionic liquid, which allows the selective dissolution of the cellulose component. After the removal of PET, the resulting solution could be employed to dry-jet wet spin textile grade cellulose fibers down to the microfiber range (0.75–2.95 dtex) with breaking tenacities (27–48 cN/tex) and elongations (7–9%) comparable to commercial Lyocell fibers made from high-purity dissolving pulp. The treatment time in [DBNH] [OAc] was found to reduce the tensile properties (<52%) and the molar mass distribution (<51%) of PET under certain processing conditions.",

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