Analysing the potential of the selective dissolution of elastane from mixed fiber textile waste

被引：34

作者：

Phan, Kim ^{[1
]}

Ugduler, Sibel ^{[1
]}

Harinck, Lies ^{[1
]}

Denolf, Ruben ^{[1
]}

Roosen, Martijn ^{[1
]}

O'Rourke, Galahad ^{[2
]}

De Vos, Dirk ^{[2
]}

Van Speybroeck, Veronique ^{[3
]}

De Clerck, Karen ^{[4
]}

De Meester, Steven ^{[1
]}

机构：

[1] Univ Ghent, Dept Green Chem & Technol, Lab Circular Proc Engn LCPE, Campus Kortrijk,Sint Martens Latemlaan 2B, B-8500 Kortrijk, Belgium

[2] Katholieke Univ Leuven, Ctr Membrane Separat Adsorpt Catalysis & Spect Su, B-3001 Leuven, Belgium

[3] Univ Ghent, Ctr Mol Modeling, Technol Pk 46, B-9052 Zwijnaarde, Belgium

[4] Univ Ghent, Dept Mat Text & Chem Engn MaTCh, Technol Pk 70A, B-9052 Zwijnaarde, Belgium

来源：

RESOURCES CONSERVATION AND RECYCLING | 2023年 / 191卷

关键词：

Textile; Recycling; Polymers; COSMO-RS; TGA; solvent; IONIC LIQUIDS; SOLUBILITY PARAMETERS; COSMO-RS; CELLULOSE; FABRICS;

D O I：

10.1016/j.resconrec.2023.106903

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Textile products are composed of various blends of synthetic or natural polymers. Elastane increases the functionality during use phase, but impedes high quality recycling. This study investigates the selective chemical dissolution of elastane from blended textile. Hansen solubility parameters and COSMO-RS were applied for solvent screening. The most recommended biobased solvents were experimentally validated with polyester, polyamide, cotton, wool and elastane for which solubility limits were determined and hence, their selectivity towards elastane dissolution. A TGA-corrected gravimetric method was developed as quantification tool and showed that tetrahydrofurfuryl alcohol and ?-valerolactone have comparable elastane dissolution capabilities to classical solvents (5 mg elastane/g solvent). Polyester/elastane and polyamide/elastane blends were subjected to this process as case studies. The LCA study showed that this selective solvent-based dissolution process saves 60% CO2-eq./kg textile waste compared to incineration. This interdisciplinary work can set the benchmark for further developing and upscaling physical/dissolution recycling processes for blended textiles.

引用

页数：15

共 45 条

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