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Title Upcycling of cotton polyester blended textile waste to new man-made cellulose fibers
ID_Doc 7182
Authors Haslinger, S; Hummel, M; Anghelescu-Hakala, A; Määttänen, M; Sixta, H
Title Upcycling of cotton polyester blended textile waste to new man-made cellulose fibers
Year 2019
Published
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 [DBNFI] [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. (C) 2019 The Author(s). Published by Elsevier Ltd.
PDF https://doi.org/10.1016/j.wasman.2019.07.040

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