Background: The present review deals with the recent development of kenaf hybrid composites.
Kenaf reinforced polymer composites are made up of either thermoplastic or thermoset matrix,
depending on their applications. The combination of kenaf fibre with more than two fibres in hybrid
composites enhances the potential uses of kenaf in many applications. The well-known limitations of
natural fibres, such as lack of thermal stability, strength degradation, water absorption and poor impact
properties, encourage the exploration of hybridisation with high performance fibres.
Methods: We review the researches on kenaf reinforced composites and kenaf reinforced hybrid biocomposites.
This review covers the types of matrix used, methods applied in manufacturing the hybrid
composites and the potential application of the hybrid composites.
Results: Kenaf fibres are widely used in fibre reinforced composites. There are limitations in the use of
kenaf in polymeric composites, including high moisture absorption, non-uniformity and poor mechanical
properties. Hybridisation of kenaf fibre with other fibres resulted in the hybrid composites with
comparable strength, stiffness, strength to weight ratio, resistance and other physical and mechanical
properties. The selection of matrix materials also plays an important role in fibre reinforced composites
materials. There will be an increase in the use of natural fibre hybrid composites in areas such as household
products and automotives.
Conclusion: Kenaf fibres play an important role in multi-application composites. This fibre is used
solely in polymer matrix or in combination either with other natural fibres or with synthetic fibres. Kenaf
hybrid composites are being developed as a potential alternative to reduce the use of synthetic fibres
such as aramid or glass fibres.