Chemical recycling of hemp waste textiles via the ionic liquid based dry-jet-wet spinning technology
dc.cclicence | CC BY | en |
dc.contributor.author | Rissanen, Marja | |
dc.contributor.author | Schlapp-Hackl, Inge | |
dc.contributor.author | Sawada, Daisuke | |
dc.contributor.author | Raiskio, Susanna | |
dc.contributor.author | Ojha, Krishna | |
dc.contributor.author | Smith, Edward | |
dc.contributor.author | Sixta, Herbert | |
dc.date.acceptance | 2022-11-17 | |
dc.date.accessioned | 2023-01-04T10:41:17Z | |
dc.date.available | 2023-01-04T10:41:17Z | |
dc.date.issued | 2022-12-18 | |
dc.description | open access article | en |
dc.description.abstract | The chemical recycling of hemp fabric into high-tenacity man-made cellulose fibres was demonstrated. The fabric was laundered 25 and 50 times to mimic the wear cycles of post-consumer textile waste. Despite the launderings, the molar mass of the material was still too high for recycling via dry-jet-wet spinning. Thus, the fabrics were treated with an aqueous sulfuric acid solution to adjust the intrinsic viscosity to the targeted level of 400–500 ml/g. The acid hydrolysed sample was dissolved in 1,5-diazabicyclo[4.3.0]non-5-enium acetate and man-made cellulose fibres were regenerated by dry-jet-wet spinning. The properties of hemp and regenerated fibres were determined by tensile testing, birefringence measurements, and X-ray diffraction. Regenerated fibres were spun into yarn and knitted into a fabric. The tensile properties of the yarn and the abrasion and pilling resistance of the fabric were determined. Regenerated fibres showed a higher modulus of toughness (55.9 MPa) compared with hemp fibres (28.7 MPa). The fineness and staple length uniformity of regenerated fibres resulted in a high yarn structure evenness, a yarn tenacity of 28.1 cN/tex, and an elongation at break of 7.5%. Due to the even fabric structure, the fabric from regenerated fibres showed higher abrasion resistance than the hemp fabric. | en |
dc.funder | Other external funder (please detail below) | en |
dc.funder.other | Strategic Research Council of the Academy of Finland | en |
dc.identifier.citation | Rissanen, M., Schlapp-Hackl, I., Sawada, D., Raiskio, S., Ojha, K., Smith, E., Sixta, H. (2022) Chemical recycling of hemp waste textiles via the ionic liquid based dry-jet-wet spinning technology. Textile Research Journal, | en |
dc.identifier.doi | https://doi.org/10.1177/00405175221143744 | |
dc.identifier.uri | https://hdl.handle.net/2086/22399 | |
dc.language.iso | en | en |
dc.peerreviewed | Yes | en |
dc.projectid | grant agreement no. 327296 – the FINIX project | en |
dc.publisher | Sage | en |
dc.title | Chemical recycling of hemp waste textiles via the ionic liquid based dry-jet-wet spinning technology | en |
dc.type | Article | en |