The study of fibre/matrix bond strength in short hemp polypropylene composites from dynamic mechanical analysis

Etaati, Amir and Pather, Selvan and Fang, Zhengping and Wang, Hao (2014) The study of fibre/matrix bond strength in short hemp polypropylene composites from dynamic mechanical analysis. Composites Part B: Engineering, 62. pp. 19-28. ISSN 1359-8368

Abstract

This paper presents results from an experimental study on the static and dynamic mechanical and viscoelastic properties of short hemp fibre polypropylene composites. Composites containing 10–60 wt.% short noil hemp fibre were injection moulded. The maleic anhydride grafted polypropylene (MAPP) and maleic anhydride grafted Poly(ethylene octane) (MAPOE) were used as coupling agents for modifying the matrices. Dynamic mechanical thermal analysis (DMTA) of the composites were performed over a temperature range of 25–150°C under frequency of 1 Hz. DMTA revealed no noticeable changes in α-transition temperature when the fibre content was increased or coupling agents were added. The composites revealed better temperature resistance at higher fibre content. However, the increase in storage modulus was negligible in composites reinforced with more than 40 wt.% hemp fibres; due to the agglomeration of the fibres. The results of the damping ratio analysis revealed that higher interfacial bonding was achieved by addition of MAPP coupling agent in comparison with addition of MAPOE coupling agent. This was also confirmed by tensile strength experiments and scanning electron microscope (SEM) observations.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2014 Elsevier Ltd. Published Version restricted in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 03 May 2014 11:25
Last Modified: 19 Feb 2016 04:08
Uncontrolled Keywords: polymer–matrix composites (PMCs); fibre/matrix bond; internal friction/damping; injection moulding; hemp fibre
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0910 Manufacturing Engineering > 091012 Textile Technology
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
Socio-Economic Objective: B Economic Development > 86 Manufacturing > 8604 Leather Products, Fibre Processing and Textiles > 860499 Leather Products, Fibre Processing and Textiles not elsewhere classified
Identification Number or DOI: 10.1016/j.compositesb.2014.02.011
URI: http://eprints.usq.edu.au/id/eprint/24962

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