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Cellulose

, Volume 25, Issue 3, pp 1783–1793 | Cite as

Cellulose nanocrystal deposition onto regenerated cellulose fibres: effect on moisture absorption and fibre–matrix adhesion

  • Abdelghani Hajlane
  • Roberts Joffe
  • Hamid Kaddami
Original Paper
  • 166 Downloads

Abstract

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.

Keywords

Cellulose fibres Surface treatment Moisture absorption Cellulose nanocrystals Fibre–matrix interface 

Notes

Acknowledgments

The authors are grateful to Hassan II Academy of Science and Technology, the Moroccan National Centre for Scientific and Technical Research, the Swedish Research Council (ref. no. 2009-6433), and EXCEL project (funded by local government Norrbotten, Sweden) for financial support.

Supplementary material

10570_2018_1680_MOESM1_ESM.pptx (184 kb)
Supplementary material 1 (PPTX 183 kb)

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Division of Materials Science, Department of Engineering Sciences and MathematicsLuleå University of TechnologyLuleåSweden
  2. 2.Laboratory of Organometallic and Macromolecular Chemistry-Composite Materials, Faculty of Sciences and TechnologiesCadi Ayyad UniversityMarrakechMorocco
  3. 3.Department of Materials Science and Nano-engineeringMohammed VI Polytechnic UniversityBen GuerirMorocco

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