Investigation on mechanical, physical and environment properties for hybrid method of fabrication on cornstarch composites reinforced by short pineapple leaf fiber

Izamuddin, Nur Rohaiza (2019) Investigation on mechanical, physical and environment properties for hybrid method of fabrication on cornstarch composites reinforced by short pineapple leaf fiber. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This study is about the effects of pineapple leaf fibers (P ALF) reinforced with thermoplastic com starch (TPCS) using hybrid techniques in manufacturing through mechanical, physical and environmental testing. The composites are made using short pineapple leaf fibers, where each composite has a different fiber weight ratio (20, 30, 40, 50.60, and 70) wt%. The preparation of TPCS was by mixing 70 wt% of native com starch and 30 wt% glycerol using via hand-mixed and high speed mixer. Then PALF and TPCS were arranged in ahybridorder sequence into the molding, where the total weight of PALF and TPCS was 40g.PALF/TPCS composite was studied and compared to obtain the highest and best value readings for each experiment. The optimum ratio that been earn from this study is 30wt% fiber loading. The highest mechanical properties for tensile stress and impact were at 30 wt% fiber content, while for the bending tests were at 60 wt% fiber content. For physical tests, the highest density was at 20 wt% fiber content, moisture content and moisture absorption tests had the highest reading at 60 wt% fiber loads while the highest reading for water absorption test was at 40 wt% fiber content. Finally, the fiber content at 20 wt% shows the highest value of environmental properties compared to other fiber content. Therefore, the P ALF I TPCS composite produced have good composite and environmental characteristics.

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