Fabrication Of Wood Plastic Composites From Lalang Grass And Polypropylene

Lau, Sie Yee (2009) Fabrication Of Wood Plastic Composites From Lalang Grass And Polypropylene. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This study is discussed about the fabrication of wood plastic composite from Ialang grass and polypropylene. From this study, effect on composite panel by using two different processes such as mixing process and extrusion process are carried on. In this study it is begins with the preparation of lalang fiber into a short form. When the preparation of Ialang grass fiber is done, Ialang grass fiber reinforced polypropylene composites in different volume fraction of ratio will be prepared. From this study, the weight ratio of the Ialang grass fiber is 0 wt. %, 5 wt. %, 15 wt. % and 25 wt. %. Firstly, the Ialang grass and polypropylene are mixed either using internal mixer machine at temperature of 190°C about 10 minutes or put the mixture into extruder to form extrudate. Then, it is gone into crusher machine to form granule. The granule is then pressed to form composite panels by hot pressing process. After that, the composite panels are cut to desired dimension of specimen according to ASTM standard. The specimens are tested to measure their mechanical properties through tensile, flexural, impact and also hardness test. From this study, the composite which is produced by mixing process is better than composite which is produced by extrusion process. Composite which is produced by extrusion process is more brittle than composite which is produced by mixing process. From the research, the composition with 5 wt. % of fiber shows the best composition for mechanical properties for both processes.

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