Tensile Properties and Water Absorption of Recycle Polypropylene (rPP) / Oil Palm Empty Fruit Bunch (OPEFB) Composites: The Effect of Maleic Anhydrate-g-Polypropylene (MAPP) Addition
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The effects of maleic anhydrate (MAPP) as compatibilizer on tensile properties and water absorption of recycle polypropylene (rPP)/oil palm empty bunch fruit (OPEFB) composites were investigated. Several contents of MAPP viz. 2, 4, 6, 8 wt.% were prepared. Corresponding rPP/OPEFB composite without MAPP addition was also made for comparison. The OPEFB composition was fixed at 30 wt.%, while rPP was 70 wt.% and reduced correspondingly on the addition of MAPP. Composites were prepared in extruder with temperatur of 190°C. Results indicated an improvement in tensile strength and elongation at break were obtained on the addition of MAPP up to 6 wt.%. It was also revealed that the water absorption was significantly decreased as the MAPP was increased up to 6%. However, the addition of 8 wt.% MAPP was found to reduce these properties. Scanning electron microscopy (SEM) images from the tensile fracture surface supported that the improvement on interface region between matrix and filler have occurred.