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Reinforcement of polypropylene with hemp fibres
Journal article   Peer reviewed

Reinforcement of polypropylene with hemp fibres

Zili L Yan, H Wang, K T Lau, Selvan Pather, J C Zhang, G Lin and Y Ding
Composites Part B: Engineering, Vol.46, pp.221-226
2013
DOI: https://doi.org/10.1016/j.compositesb.2012.09.027
url
https://doi.org/10.1016/j.compositesb.2012.09.027View
Published Version

Abstract

hemp fibre polypropylene matrix composites mechanical properties fracture mechanism
Noil hemp fibre (NHF) is a kind of textile hemp fibre after deep degumming from scutched hemp fibre (SHF), mechanically-degummed hemp fibre. Both NHF and SHF with strong mechanical properties are good candidates as reinforcing fibres for plastics such as polypropylene (PP). The PP/NHF and PP/SHF composites were blended via internal mixing process. The effect of fibres on the morphology, thermal resistance and reinforcement of the composites were investigated. PP/NHF composites showed higher impact strength, lower flexural strength than PP/SHF at the corresponding loading because NHF has smaller diameter and better thermal resistance than SHF. Meanwhile, NHF has the similar reinforcement to tensile strength with SHF. The effect of maleic anhydride polypropylene (MAPP) on the fibre-resin interface bonding was also comparatively studied. With increasing amount of MAPP, the tensile, flexural and impact strengths of PP/NHF and PP/SHF increased, respectively. The morphology of PP/SHF and PP/NHF results well showed that MAPP improved the interaction of the fibres with PP through chemical adhesion.

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Engineering, Multidisciplinary
Materials Science, Composites
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