Study on Binary Low-Density Polyethylene (LDPE)/Thermoplastic Sago Starch (TPS) Blend Composites
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Abstract
Composites with LDPE/TPS have been prepared using different filler loading (TPS), two separate compatibilizers, and additionally maleic anhydride (MA) and dibutyl maleate (DM) using a melt extrusion and an injection molding. Composites are tested for melting flow behavior, static mechanical features (tensile, bending, and Izod impact test), phase morphology, thermal behaviors (DSC and TGA/DTG), and biodegradability of LDPE/TPS (LPTS). As a result, the inclusion of compatibilizers in LPTS has led to significant improvements in melt flow index (MFI) and mechanical properties. Besides, DM to the LPTS (LPTSDM) composite gives rise to excellent dispersion of starch in the matrix and improved features compared to other composites that indicate homogeneity. Moreover, phase morphology, DSC, thermal stability, and biodegradability were performed for various LPTS samples. Also, the water absorption of the LPTS samples was reduced by the inclusion of compatibilizers.
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