The effect of cellulose nanowhiskers on the flexural properties of self-reinforced polylactic acid composites

Hossain, Kazi M. Zakir, Felfel, Reda M., Rudd, Chris D., Thielemans, Wim, and Ahmed, Ifty (2014) The effect of cellulose nanowhiskers on the flexural properties of self-reinforced polylactic acid composites. Reactive and Functional Polymers, 85. pp. 193-200.

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Abstract

Self-reinforced polylactic acid (SR PLA) composites incorporating cellulose nanowhiskers (CNWs) were produced by coating orientated PLA fibres with a polyvinyl acetate (PVAc)-CNW mixture as a binder prior to hot compaction at 95 degrees C. PLA fibres were produced with an average diameter of 11 (+/- 0.9) mu m via a melt-drawing process at 180 degrees C. Scanning electron microscopy (SEM) images revealed that the CNWs imparted roughness to the PLA fibre surface. Cross-sectional examination of the SR PLA composites after hot-pressing confirmed that the PLA fibres had maintained their morphology. Incorporation of 8 wt% CNWs within the SR-PLA composites revealed an increase in their flexural strength (48%) and modulus (39%) compared to the control composite (flexural strength similar to 82 MPa and modulus similar to 3.9 GPa). In addition, whilst the control SR-PLA composite revealed quite brittle characteristics, the addition of CNWs and PVAc gave the self-reinforced composite a more ductile behaviour.

Item ID: 58004
Item Type: Article (Research - C1)
ISSN: 1873-166X
Keywords: PLA fibre, self-reinforced composite, cellulose nanowhiskers, flexural properties
Copyright Information: © 2014 Elsevier B.V. All rights reserved.
Funders: University of Nottingham Scholarship (UK), EPSRC
Projects and Grants: EPSRC Grant EP/J015687/1.
Date Deposited: 17 Apr 2019 09:23
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091202 Composite and Hybrid Materials @ 100%
SEO Codes: 86 MANUFACTURING > 8606 Industrial Chemicals and Related Products > 860607 Plastic Products (incl. Construction Materials) @ 100%
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