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

Loading...
Thumbnail Image
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2019-09-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
9
88-96
Series
Waste Management, Volume 97
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.
Description
| openaire: EC/H2020/646226/EU//Trash-2-Cash
Keywords
Cellulose PET separation, Dry-jet wet spinning, Ioncell, Ionic liquid, Polyethylene terephthalate, Textile recycling
Other note
Citation
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, vol. 97, pp. 88-96 . https://doi.org/10.1016/j.wasman.2019.07.040