Natural fibres: can they replace glass in fibre reinforced plastics?

Published Date

doi:10.1016/S0266-3538(03)00096-4

Eco-Composites

Author 

Paul Wambua ^,

Jan Ivens

Ignaas Verpoest

• Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven, Kasteelpark Arenberg 44 B-3001 Leuven, Belgium

Accepted 21 February 2003. Available online 15 May 2003.

Abstract

In this work, natural fibres (sisal, kenaf, hemp, jute and coir) reinforced polypropylene composites were processed by compression moulding using a film stacking method. The mechanical properties of the different natural fibre composites were tested and compared. A further comparison was made with the corresponding properties of glass mat reinforced polypropylene composites from the open literature. Kenaf, hemp and sisal composites showed comparable tensile strength and modulus results but in impact properties hemp appears to out-perform kenaf. The tensile modulus, impact strength and the ultimate tensile stress of kenaf reinforced polypropylene composites were found to increase with increasing fibre weight fraction. Coir fibre composites displayed the lowest mechanical properties, but their impact strength was higher than that of jute and kenaf composites. In most cases the specific properties of the natural fibre composites were found to compare favourably with those of glass.

Keywords

B. Mechanical properties

A. Glass fibres

Natural fibres

B. Interfacial strength

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