Mechanical properties of chemically-treated hemp fibre reinforced sandwich composites

Kabir, M. M. and Wang, H. and Lau, K. T. and Cardona, F. and Aravinthan, T. (2012) Mechanical properties of chemically-treated hemp fibre reinforced sandwich composites. Composites Part B: Engineering, 43 (2). pp. 159-169. ISSN 1359-8368

Abstract

In this study, hemp fabrics were used as reinforcements with polyester resin to form composite skins while short hemp fibres with polyester as a core for making composite sandwich structures. To improve the fibre matrix adhesion properties, alkalisation, silane and acetylation treatments on the fibres surface were carried out. Examinations through fourier transform infrared (FTIR) spectroscopy, scanning electron microscope (SEM), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were conducted to investigate the physical and thermal properties of the fibres. Mechanical properties such as flexural and compressive strengths of the sandwich structures made by treated and untreated hemp fibres were studied. Based on the results obtained from the experiments, it was found that the fibre treated with alkalic solution and post-soaked by 8% NaOH exhibited better mechanical strength as compared with other treated and untreated fibre composite samples. Besides, DSC and TGA analysis showed that the thermal stability of all treated fibre was enhanced as compared with untreated samples.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2011 Elsevier Ltd. Permanent restricted access to published version due to publisher copyright policy.
Depositing User: Mr Mohammad Mazedul Kabir
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 06 Aug 2012 09:02
Last Modified: 14 Oct 2014 02:05
Uncontrolled Keywords: sandwich; fibre/matrix bond; surface treatments; thermal properties; mechanical properties
Fields of Research (FOR2008): 01 Mathematical Sciences > 0101 Pure Mathematics > 010106 Lie Groups, Harmonic and Fourier Analysis
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9606 Environmental and Natural Resource Evaluation > 960699 Environmental and Natural Resource Evaluation not elsewhere classified
Identification Number or DOI: 10.1016/j.compositesb.2011.06.003
URI: http://eprints.usq.edu.au/id/eprint/20446

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