Mechanical and Thermal Properties of ABS/PVC Composites: Effect of Particles Size and Surface Treatment of Ground Calcium Carbonate

The objectives of this study are to determine the effects of particles size and surface treatment of ground calcium carbonate (GCC) on the mechanical and thermal properties of acrylonitrile butadiene styrene/poly(vinyl chloride) (ABS/PVC) (80:20) blends. The results showed GCC increased flexural modulus but decreased flexural and impact strength of the blend. Sample S-2 containing stearate surface treated GCC showed the highest flexural modulus value while S-1 with the smallest particles size was the highest for impact strength. GCC increased the thermal stability of ABS/PVC composites with S-1 being the most effective, as indicated from the thermogravimetric analysis.