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Int. J. Mol. Sci. 2015, 16(3), 6202-6216; doi:10.3390/ijms16036202

Effect of Chemical Treatments on Flax Fibre Reinforced Polypropylene Composites on Tensile and Dome Forming Behaviour

Research School of Engineering, Australian National University, North Road, Canberra 0200, Australia
These authors contributed equally to this work.
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Author to whom correspondence should be addressed.
Academic Editor: Qinghua Qin
Received: 4 February 2015 / Revised: 11 March 2015 / Accepted: 12 March 2015 / Published: 17 March 2015
(This article belongs to the Special Issue Advances in Anisotropic and Smart Materials)
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Abstract

Tensile tests were performed on two different natural fibre composites (same constituent material, similar fibre fraction and thickness but different weave structure) to determine changes in mechanical properties caused by various aqueous chemical treatments and whether any permanent changes remain on drying. Scanning electronic microscopic examinations suggested that flax fibres and the flax/polypropylene interface were affected by the treatments resulting in tensile property variations. The ductility of natural fibre composites was improved significantly under wet condition and mechanical properties (elongation-to-failure, stiffness and strength) can almost retain back to pre-treated levels when dried from wet condition. Preheating is usually required to improve the formability of material in rapid forming, and the chemical treatments performed in this study were far more effective than preheating. The major breakthrough in improving the formability of natural fibre composites can aid in rapid forming of this class of material system. View Full-Text
Keywords: anisotropic materials; polymer-matrix composites; mechanical properties; wettability; stamp forming anisotropic materials; polymer-matrix composites; mechanical properties; wettability; stamp forming
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Wang, W.; Lowe, A.; Kalyanasundaram, S. Effect of Chemical Treatments on Flax Fibre Reinforced Polypropylene Composites on Tensile and Dome Forming Behaviour. Int. J. Mol. Sci. 2015, 16, 6202-6216.

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