Properties of Polypropylene Composites Fabricated Using Twin-screw Extrusion
نویسندگان
چکیده
Sunflower hull sanding dust (SHSD) filled polypropylene (PP) composite was prepared using a twin-screw extruder. Mechanical and thermal properties of the SHSD/PP composite were characterized contrasting to organically modified clay /PP composite. Differential scanning calorimetry (DSC) analysis showed that the crystallization temperature and the degree of crystallinity of PP exhibited changes with addition of SHSD. Mechanical properties of the PP were obviously enhanced by adding SHSDs. Flexural strength and flexural modulus of PP composite containing 5wt% SHSD are higher than that of the organically modified clay reinforced PP. Scanning electron microscopy (SEM) observation showed that no obvious agglomeration of SHSD existed in PP cmposites. Compared to the neat PP and organo-clay/PP, the SHSD/PP composites exhibited a relatively decreasing rate of thermal degradation with the increase of temperature. Experimental results suggest that SHSD, as a sunflower processing byproduct, may find promising applications in composite materials.
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