D. N. Izekor M. E. Mordi


This study evaluates the effects of densities and mixing ratio on the physical and mechanical properties of wood plastic composites boards at mixing ratio of 1:1 to 1:1.4 and nominal densities of 700kg/mm3 and 800kg/mm3. The quantity of High Density Polyethylene (HDPE) and saw dust used in the production of Wood Plastic Composites (WPCs) was weighed to a nominal density of 700kg/mm3 and 800kg/mm3. The materials were thoroughly mixed and fed into a neatly primed oil mould with a dimension of 300 x 300 x 10 mm. Test samples used for physical and mechanical properties determination were collected from each board produced from the mould. The results showed that WPCs board produced from mixing ratio 1:1 had the highest Modulus of Rupture (MOR) and Modulus of Elasticity (MOE) values of 6.52 mm N-2 and 564.95 mm N-2 respectively. Water absorption, thickness swelling and linear expansion of WPCs produced from wood/plastic ratio of 1:1.4 had the lowest mean values of 6.67, 0.83, 0.68% and 21.61, 1.33, 5.35% respectively after 2 hours and 24 hours of water immersion test. Analysis of variance carried out at 0.05% probability level showed that the effect of density and mixing ratio were significant on the physical and mechanical properties of wood plastic composites boards.


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Linear expansion, Modulus of elasticity, Modulus of rupture, Thickness swelling, Water absorption, Wood plastic composites

Aina, K. S. and Fuwape, J. A. (2008). Effect of weathering on strength properties of wood plastic composites produced from Gmelina arborea. Nigerian Journal of Forestry, 38: 62 – 73.
Aina, K. S., Osuntuyi, E. O. and Aruwajoye, A. S. (2013). Comparative studies on physic-mechanical properties of wood plastic composites produced from three indigenous wood species. International journal of science and research. 2 (8): 226 – 230.
Aina, K. S., Osuntuyi, E. O. and Aruwajoye, A. S. (2014). Physico-mechanical properties of wood plastic composites produced from three indigenous wood species. In: Forest and Forest Products; Key to sustainable livelihood (Adedire, M.O; Onyekwelu, J.C; Oke, D.O., Adekunle, V. A. J., Jayeola, O. A. and Oladoye, A. O. Eds). Proceedings of the 4th Biennial Conference of the Forest and Forest Products Society. 22nd – 26th April, 2014. pp. 299 – 306.
Ajigbon, A. A and Fuwape, J. A. (2005). Strength and dimensional properties of plastic bonded composite board produced from Afara (Terminalia superba) sawdust. Proc. 1st Annual Conf. Dev. In Agric and Biol. Sci, 27th April, 2005, FUTA, Nigeria.
Behzad, K. (2012). The effect of plastic type and virginity on properties of wood plastic composites. World applied science journal., 17(2):168 – 171.,
Bengtsson, M., Gatenholm, P. And Oksman, K. (2005). The effects of cross linking on the properties of polyethylene/ wood flour Composites Science and Technology 65:1468 –1479.
Bledzki, A.K, and Faruk, O. (2004). Extrusion and injection moulded microcellular wood fibre reinforced poly ethylene composites. Cellular Polymer, 23 (4): 211 – 227.
Clemons, C. (2002). Wood plastic composites in the United States; The interfacing of two industries. Forest Product Journal., 52 (6): 10 – 18.
Endra, G., Anom, I. A. and Reinardus, L. C. (2012). Influence of sawdust size and ratio of HDPE waste on the physical properties of wood-plastics composite. International Journal of Basic & Applied Sciences, 12 (4): 8 – 42.
Nafaji, A. (2007). Evaluation of many properties of wood plastic composites made from Ligno cellulosic fibres and recycled HDPE Phd. Dissertation Faculty of Natural Resources Islamic Azad University of Sciences and Research. pp.175.
Nair, K. C. M., Thomas, S. and Groeninck, G. (2001). Thermal and dynamic mechanical analysis of polystyrene composites reinforced with short sisal fibres composites. Science and Technology, 61:2519 – 2529.
Rothlin, O. (2007) Processing wood-plastic composites places new demands on feeders. Plastic Additives Composites, 9: 36 – 39.
Shebani, A. N., Van Reneenen, A. J. and Meincken, M. (2009). The effect of wood species on the mechanical and thermal properties of wood – LDPE composites. Journal of Composite Materials. 43 (26): 3326 – 3331.
Smith, P. M. (2001). United States wood fibre-plastic composites decking market. Proc. 6th International Conference on wood fibre plastic composites Forest Products Society, Madison. pp.13 – 17.
Stark, N. M. and Rowland, R. (2003) Effects of wood fibre characteristic on mechanical properties of wood/polypropylene composites. Wood and Fiber Science. 35 (2): 167 – 174.
Wang, S. and Zhang, J. (2007). Chemical characterization of smoke from the production process of wood plastic composites. Forestry Studies in China. 9: 57 – 62.
Wolcott, M. P. (2003). Formulation and process development of flat-pressed wood polyethylene composites. Forest Product Journal. 53 (9): 25 – 32.
Yang, H. S., Wolcott, M. P., Kim, H. S. and Kim, H. J. (2007). Effect of different compatibilizing agents on the mechanical properties of lignocellulosic material filled polyethylene bio-composites. Composites Structure. 79 (3): 369 – 375.
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Izekor, D. N., & Mordi, M. E. (2014). Dimensional stability and strength properties of wood plastic composites produced from sawdust of Cordia alliodora (Ruiz and Pav.). Journal of Applied and Natural Science, 6(2), 338-343. https://doi.org/10.31018/jans.v6i2.424
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