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Cellulose nanocrystal deposition onto regenerated cellulose fibres: effect on moisture absorption and fibre–matrix adhesion
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science. Laboratory of Organometallic and Macromolecular Chemistry-Composite Materials, Faculty of Sciences and Technologies, Cadi Ayyad University, Marrakech; Department of Materials Science and Nano-engineering, Mohammed VI Polytechnic University, Ben Guerir, Morocco.ORCID iD: 0000-0001-8810-2711
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-5210-4341
Laboratory of Organometallic and Macromolecular Chemistry-Composite Materials, Faculty of Sciences and Techniques, Cadi Ayyad University.
2018 (English)In: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 25, no 3, p. 1783-1793Article in journal (Refereed) Published
Abstract [en]

The effect of treatment of regenerated cellulose fibres by cellulose nanocrystals on the moisture absorption of the fibres as well as on fibre–epoxy resin adhesion has been investigated. Nanocrystals were deposited on the fibres using γ-methacryloxypropyltrimethoxysilane (MPS) as coupling agent. Water absorption tests performed on fibres showed that, at 64% relative humidity, treatment by the coupling agent decreased the water uptake by a factor of two compared with untreated fibres, whereas deposition of cellulose nanocrystals (CNC) on fibres treated with MPS (FMMPS) did not further increase the water absorption despite the hydrophilic character of the CNC. This result was confirmed by monitoring fibre swelling using contact angle measurements. Indeed, it was found that FMMPS presented the same contact angle with glycerol before and after CNC deposition, being higher than that obtained for untreated fibres. The tensile strength and stiffness of fibres were not affected by moisture after either treatment, but nanocrystal deposition enhanced the fibre–epoxy resin adhesion, as revealed by results of pull-out tests performed on fibre bundles at 64% relative humidity.

Place, publisher, year, edition, pages
Springer, 2018. Vol. 25, no 3, p. 1783-1793
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-67591DOI: 10.1007/s10570-018-1680-zISI: 000427379200019Scopus ID: 2-s2.0-85041584826OAI: oai:DiVA.org:ltu-67591DiVA, id: diva2:1181818
Note

Validerad;2018;Nivå 2;2018-03-16 (rokbeg)

Available from: 2018-02-09 Created: 2018-02-09 Last updated: 2018-07-18Bibliographically approved

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