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Pre-treatments of pre-consumer cotton-based textile waste for production of textile fibres in the cold NaOH(aq) and cellulose carbamate processes
VTT Technical Research Centre of Finland, Finland.ORCID iD: 0000-0003-2448-3695
RISE Research Institutes of Sweden, Bioeconomy and Health.
RISE Research Institutes of Sweden, Bioeconomy and Health.ORCID iD: 0000-0003-4253-3801
RISE Research Institutes of Sweden, Bioeconomy and Health, Material and Surface Design.
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2021 (English)In: Cellulose, ISSN 0969-0239, E-ISSN 1572-882X, Vol. 28, p. 3869-3886Article in journal (Refereed) Published
Abstract [en]

Recycling of textiles is of importance due to the large amount of waste generated from  the increasing consumption and use worldwide. Cotton-rich pre-consumer textiles are  considered as potential raw material for production of man-made regenerated fibres, but demands purification from the blends with synthetic fibres as well as the dyes and  finishing chemicals. In this study we explore the use of different pre-treatments of pre-consumer textiles to meet specific parameters for production of fibres in the cold  NaOH(aq) or cellulose carbamate process. The pre-treatments consisted of different  bleaching sequences and were performed on both uncoloured and coloured pre-consumer textiles. For the uncoloured textile, degree of polymerisation and amount of  inorganic content was efficiently reduced making the material suitable for both the cold  NaOH(aq) and the cellulose carbamate process. In case of the coloured textile, the pre-treatments were able to remove the dye and decrease the inorganic content as well as  reduce the degree of polymerisation but only sufficiently enough for production of fibres  in the cellulose carbamate process. The work was able to prove a fibre-to-fibre concept  while further optimisation of the regeneration steps is expected to improve the  mechanical properties of the produced fibres in future studies.

Place, publisher, year, edition, pages
2021. Vol. 28, p. 3869-3886
Keywords [en]
Cellulose;Cellulose carbamate;Cold alkali;Cotton;Dissolution;NaOH(aq);Recycling;Spinning
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:ri:diva-52592DOI: 10.1007/s10570-021-03753-6PubMedID: 2-s2.0-85102027061OAI: oai:DiVA.org:ri-52592DiVA, id: diva2:1537606
Available from: 2021-03-16 Created: 2021-03-16 Last updated: 2023-11-22Bibliographically approved

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Wedin, HelenaOlsson, CarinaKöhnke, Tobias

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Määttänen, MarjoWedin, HelenaOlsson, CarinaKöhnke, Tobias
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Bioeconomy and HealthMaterial and Surface DesignRISE Research Institutes of SwedenChemistry, Biomaterials and Textiles
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