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Differences in swelling of chemical pulp fibers and cotton fibers-Effect of the supramolecular structure
Chalmers University of Technology, Sweden.
RISE - Research Institutes of Sweden, Bioeconomy, Biobased Materials.ORCID iD: 0000-0003-0779-5267
RISE - Research Institutes of Sweden, Bioeconomy.
Chalmers University of Technology, Sweden.
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2019 (English)In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 14, no 3, p. 5698-5715Article in journal (Refereed) Published
Abstract [en]

The swelling and dissolution of cellulose are key parameters in the production of regenerated cellulose fibers. Since cotton is almost pure cellulose, it has been proposed that the recycling of cotton textiles may be accomplished through incorporating the cotton textiles into the production of regenerated cellulosic fibers. In this study, the supramolecular structure before and after pretreatment was characterized using solid-state carbon-13 nuclear magnetic resonance (13C NMR), and the findings related to the swelling of dissolving pulp and cotton were quantified with a fiber analyzer. The cotton and dissolving pulp samples were subjected to three different pretreatments: mild acid hydrolysis, acid hydrolysis in ethanol, and a hydrothermal treatment. The results showed that cotton was harder to swell than the dissolving pulp. This indicated that either waste cotton requires another type of activating pretreatment than those included in this study or very good solvents if it is to be included in the production of regenerated fibers. 

Place, publisher, year, edition, pages
North Carolina State University , 2019. Vol. 14, no 3, p. 5698-5715
Keywords [en]
Acid hydrolysis, Cotton recycling, CP/MAS 13C NMR, Fiber swelling, Hydrothermal treatment, Cellulose, Chemical pulp, Dissolution, Hydrolysis, Nuclear magnetic resonance, Recycling, Supramolecular chemistry, Textile fibers, Textiles, Hydrothermal treatments, Mild acid hydrolysis, Regenerated cellulose, Regenerated cellulosic fiber, Supramolecular structure, Cotton, Dissolving
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-42501DOI: 10.15376/biores.14.3.5698-5715Scopus ID: 2-s2.0-85076484004OAI: oai:DiVA.org:ri-42501DiVA, id: diva2:1384726
Note

Funding details: Swedish Cancer Foundation; Funding text 1: This work was performed within the Mistra Future Fashion program. Financial support from Mistra-The Swedish Foundation for Strategic Environmental Research-and from the Swedish foundation "S?dra Skogs?garna Stiftelse f?r Forskning, Utveckling och Utbildning [S?dra Skogs?garna Foundation for Research, Development and Education]" is gratefully acknowledged. The authors would also like to thank Textilia for providing the cotton sheets.

Available from: 2020-01-10 Created: 2020-01-10 Last updated: 2020-01-10Bibliographically approved

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Aldaeus, Fredrik

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