The DOI matches its Crossref record; 26 of the 28 references it cites were found in a registry or an index.
Development of an efficient route for combined recycling of PET and cotton from mixed fabrics
Open accessAbstract
Most textile waste is either incinerated or landfilled today, yet, the material could instead be recycled through chemical recycling to new high-quality textiles. A first important step is separation since chemical recycling of textiles requires pure streams. The focus of this paper is on the separation of cotton and PET (poly(ethylene terephthalate), polyester) from mixed textiles, so called polycotton. Polycotton is one of the most common materials in service textiles used in sheets and towels at hospitals and hotels. A straightforward process using 5–15 wt% NaOH in water and temperature in the range between 70 and 90 °C for the hydrolysis of PET was evaluated on the lab-scale. In the process, the PET was degraded to terephthalic acid (TPA) and ethylene glycol (EG). Three product streams were generated from the process. First is the cotton; second, the TPA; and, third, the filtrate containing EG and the process chemicals. The end products and the extent of PET degradation were characterized using light microscopy, UV-spectroscopy, and ATR FT-IR spectroscopy, as well as solution and solid-state NMR spectroscopy. Furthermore, the cotton cellulose degradation was evaluated by analyzing the intrinsic viscosity of the cotton cellulose. The findings show that with the addition of a phase transfer catalyst (benzyltributylammonium chloride (BTBAC)), PET hydrolysis in 10% NaOH solution at 90 °C can be completed within 40 min. Analysis of the degraded PET with NMR spectroscopy showed that no contaminants remained in the recovered TPA, and that the filtrate mainly contained EG and BTBAC (when added). The yield of the cotton cellulose was high, up to 97%, depending on how long the samples were treated. The findings also showed that the separation can be performed without the phase transfer catalyst; however, this requires longer treatment times, which results in more cellulose degradation.
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“Polymer, oligomer and monomer recycling is, however, hindered by a lack of technologies for sorting and separation into pure enough fractions ( € Ostlund et al., 2015), although there have recently been significant breakthroughs in the separation of cotton/polyester blends (Palme et al., 2017).”
From Environmental impact of textile reuse and recycling – A review (2018) · cites this paper as Palme et al., 2017
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Cited by
Sorted by citations
Environmental impact of textile reuse and recycling – A review
Sandin, G., & Peters, G. M. (2018) · Journal of Cleaner Production · doi:10.1016/j.jclepro.2018.02.266 · Cited by 1,087
“Polymer, oligomer and monomer recycling is, however, hindered by a lack of technologies for sorting and separation into pure enough fractions (€Ostlund et al., 2015), although there have recently been significant breakthroughs in the separation of cotton/polyester blends (Palme et al., 2017).”
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Upcycling of cotton polyester blended textile waste to new man-made cellulose fibers
Haslinger, S., Hummel, M., Anghelescu‐Hakala, A., et al. (2019) · Waste Management · doi:10.1016/j.wasman.2019.07.040 · Cited by 227
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Recent advances in recycling technologies for waste textile fabrics: a review
Baloyi, R. B., Gbadeyan, O. J., Sithole, B. B., & Chunilall, V. (2023) · Textile Research Journal · doi:10.1177/00405175231210239 · Cited by 235
Metadata
- Authors
- Palme, A., Peterson, A., de la Motte, H., Theliander, H., & Brelid, H.
- Affiliations
- Chalmers University of Technology (SE)
- Södra Skogsägarna (Sweden) (SE)
- Venue
- Textiles and Clothing Sustainability
- Published
- 2017-02-22
- Volume
- 3
- Issue
- 1
- ISSN
- 2197-9936 (ISSN-L)
- OpenAlex
- W2591428436
- Semantic Scholar
- 4a1bcf8c259373526921c5e098c894c4c4804678
- Cited by
- 155
- References
- 28
- Citations by year
- 2026: 17 · 2025: 33 · 2024: 35 · 2023: 19 · 2022: 22 · 2021: 12 · 2020: 9 · 2019: 5 · 2018: 3
- FWCI
- 2.66
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- Textiles and Clothing Sustainability (publishedVersion, cc-by)
- Chalmers Research (Chalmers University of Technology) (submittedVersion)
- Diva portal (Dalarna University Library) (submittedVersion, other-oa)
- Chalmers Publication Library (Chalmers University of Technology) (submittedVersion)
- Funders
- MISTRA
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
- Physical Sciences › Environmental Science › Waste Management and Disposal › Waste Management and Recycling
- Physical Sciences › Environmental Science › Waste Management and Disposal › Recycling and Waste Management Techniques
- Keywords
- PET hydrolysis, textile recycling, chemical recycling, polyesters, terephthalic acid, ethylene glycol, phase transfer catalyst, NaOH hydrolysis, cellulose degradation, intrinsic viscosity
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