WFRF:(Mankar Smita V.)
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Development of Circularly Recyclable Low Melting Temperature Bicomponent Fibers toward a Sustainable Nonwoven Application
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- Guo, Zengwei (author)
- RISE,Polymera material och kompositer,Research Institutes of Sweden (RISE)
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- Warlin, Niklas (author)
- Lund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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- Mankar, Smita V. (author)
- Lund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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- (creator_code:org_t)
- 2021-11-28
- 2021
- English.
- In: ACS Sustainable Chemistry and Engineering. - : American Chemical Society. - 2168-0485. ; 9:49, s. 16778-16785
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Sustainable low melting temperature bicomponent polyester fibers that can be circularly recycled were developed. The potentially biobased poly(hexamethylene terephthalate) (PHT), acting as the low melting temperature sheath material in the designed bicomponent fibers, was synthesized in a pilot scale. The obtained PHT with an intrinsic viscosity of 0.47 dL/g showed suitable processability when it was processed together with a poly(butylene terephthalate) (PBT) core in a melt-spinning process of bicomponent fibers. Compared with the commercial low melting temperature terephthalate-isophthalate copolyester LMP-160, PHT showed superior mechanical properties according to DMA analysis. The low melting temperature bicomponent fibers with a ratio of the PBT core and PHT sheath at 70:30 were produced smoothly at 290 °C in a pilot melt-spinning line. Preliminary chemical recycling investigations by methanolysis revealed that PHT/PBT bicomponent fibers were completely depolymerized within 2 h at 200 °C, yielding pure terephthalate, which could be conveniently separated and recycled. This indicated the feasibility of circular recycling, which will greatly improve the sustainability of nonwovens thermally bonded by these new bicomponent fibers. © 2021 The Authors.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Textil-, gummi- och polymermaterial (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Textile, Rubber and Polymeric Materials (hsv//eng)
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Keyword
- chemical recycling
- low melting temperature bicomponent fibers
- melt spinning
- nonwovens
- Fibers
- Melting point
- Nonwoven fabrics
- Recycling
- Spinning (fibers)
- Bi-component fibers
- Bicomponents
- Bio-based
- Low melting temperature bicomponent fiber
- Low melting temperatures
- Non-woven
- Polyester fibre
- Recyclables
- Terephthalate
- chemical recycling
- low melting temperature bicomponent fibers
- melt spinning
- nonwovens
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Guo, Zengwei
- Warlin, Niklas
- Mankar, Smita V.
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- Nilsson, Erik
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- ENGINEERING AND TECHNOLOGY
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