Publications

2007

James Njuguna, Paul Wambua, T.J.S.L.S.M.G.S. & Schuivens, E., 2007. Side Impact Protection Systems for Racing Car using Energy Absorbing Sandwich Structures. In Fibre Reinforced Composites Conference, Port Elizabeth, 9-12 Dec. 2007.

2006

Paul Wambua, Huxiang Hu, I.V., 2006. Low velocity impact of hemp reinforced polypropylene composites. In 27th International Conference SAMPE EUROPE, Hotel Mercure, Porte de Versailles “EXPO”, Paris, France, 27th to 29th March 2006.

2005

Wambua, P., Pirlont, M. & Verpoest, I., 2005. Protection against secondary fragmentation from AP mines based on natural fibre composites. Journal of Conventional Weapons Destruction, 9, p.49.

2004

Paul Wambua, Bart Vangrimde, S.L. & Verpoest, I., 2004. Impact on natural fibre-reinforced polypropylene composites: failure modes. In The Textile Institute 83rd World Conference, Shanghai, China, 23rd – 27th May 2004. p. 1065–1068.

Wambua, P., 2004. Protective low price composite materials based on natural fibres. Katholieke Universiteit Leuven.

2003

Wambua, P., et al., 2003. An anti-personnel mine protection based on natural fibres. In The 4th International Symposium on Materials from Renewable Resources, MesseCongressCenter Erfurt, Germany, 11th - 12th September 2003.

Wambua, P., Ivens, J. & Verpoest, I., 2003. Natural fibres: can they replace glass in fibre reinforced plastics?. Composites Science and Technology, 63, p.1259 - 1264. Website 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.

Wambua, P., Ivens, J. & Verpoest, I., 2003. Natural fibres: can they replace glass in fibre reinforced plastics?. Composites science and technology, 63, p.1259–1264.

2002

Ochieng, A., et al., 2002. Brewery wastewater treatment in a fluidised bed bioreactor. Journal of hazardous materials, 90, p.311–321.

Wambua, P. & Verpoest, I., 2002. Hemp Fabric Reinforced Polypropylene Composites: An Investigation of the Mechanical Properties. In 10th European Conference on Composite Materials (ECCM-10), Brugge, Belgium, June 3rd – 7th 2002.

Wambua, P., et al., 2002. Mechanical behaviour and ballistic impact response of hemp and flax fabric polypropylene composites. In Proc. 23rd Risö International Symposium on Materials Science. Risö National Laboratory, Roskilde, Denmark 2002, p. 357–365.

2001

Yuanding, H., Liu, Y.L. & Wambua, P., 2001. Formation of ultrafine scale structures in aluminium containing small amounts of particles by conventional rolling deformation. Journal of materials science, 36, p.4711–4717.

2000

Wambua, P. & Ivens, J., 2000. SOME MECHANICAL PROPERTIES OF KENAF/POLYPROPYLENE COMPOSITES PREPARED USING A FILM STACKING TECHNIQUE.

Recent Publications

Wambua, P.M., 2013. Inaugural Lecture: Engineering Polymeric Composite Materials: a Tool to Fast Track Kenya's Technological Development, Moi University Press.

Khoathane, M.C., Sadiku, E.R. & Wambua, P.M., 2012. Effect of water glass treatment on the mechanical and thermooxidative properties of kenaf and sisal fibres. Journal of Reinforced Plastics and Composites, 31, p.1261–1269.

Wambua, P., Mayaka, A.N. & Odhong, E., 2012. Recycling and Fibre Reinforcement of Thermoplastic Wastes to Produce Composites for Construction Works. Research Journal of Applied Sciences, Engineering and Technology, 4.

Odhong, E.O.V. & Paul M. Wambua, A.N.M., 2012. Recycling and value addition to thermoplastic wastes to produce plant fibre reinforced composites. Journal of Macromolecules, 8.

Njuguna, J., et al., 2011. Natural fibre-reinforced polymer composites and nanocomposites for automotive applications. In Cellulose fibers: bio-and nano-polymer composites. Springer, p. 661–700.

Wambua, P.M. & Anandjiwala, R., 2011. Instrumented drop weight impact on cotton, cotton/flax and cotton/glass composites. International Review of Mechanical Engineering, 5.

Paul M. Wambua, FIEK

Professor (Eng.) of Materials Engineering

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