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Tuning the properties of regenerated cellulose: Effects of polarity and water solubility of the coagulation medium
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. Nouryon Pulp and Performance Chemicals AB, Sundsvall. (FSCN)
RISE, Stockholm.
Nouryon Pulp and Performance Chemicals AB, Sundsvall.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. University of Algarve, Faro, Portugal.
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2020 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 236, article id 116068Article in journal (Refereed) Published
Abstract [en]

In this study, the effect of different alcohols and esters as a coagulation medium in the regeneration of cellulose dissolved in an aqueous LiOH-urea-based solvent was thoroughly investigated using various methods such as solid state NMR, X-ray diffraction, water contact angle, oxygen gas permeability, mechanical testing, and scanning electron microscopy. It was observed that several material properties of the regenerated cellulose films follow trends that correlate to the degree of cellulose II crystallinity, which is determined to be set by the miscibility of the coagulant medium (nonsolvent) and the aqueous alkali cellulose solvent rather than the nonsolvents’ polarity. This article provides an insight, thus creating a possibility to carefully tune and control the cellulose material properties when tailor-made for different applications. 

Place, publisher, year, edition, pages
2020. Vol. 236, article id 116068
Keywords [en]
Cellulose, Coagulation medium, Crystallinity, Polarity, Regeneration
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:miun:diva-38656DOI: 10.1016/j.carbpol.2020.116068Scopus ID: 2-s2.0-85080088394OAI: oai:DiVA.org:miun-38656DiVA, id: diva2:1414866
Available from: 2020-03-16 Created: 2020-03-16 Last updated: 2020-03-16Bibliographically approved

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From, MalinMedronho, BrunoSvanedal, IdaEdlund, HåkanNorgren, Magnus

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From, MalinMedronho, BrunoSvanedal, IdaEdlund, HåkanNorgren, Magnus
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