Mechanical, Thermal and Morphological Properties of Recycled and Virgin PC/ wollastonite Composite and its Compatibilization by SBC

Composite of recycled Polycarbonate (RPC) and Virgin (PC) with various amount of (5,10 15 wt.%) wollastonite were prepared using co-rotating twin-screw extruder. And there mechanical, thermal and morphological properties were investigated. Styrene Butadiene block copolymer (SBC) elastomer (0,1,3,5 7%) were used as a compatibilizer to study the effect on the properties of the composites. The results showed that wollastonite had no significant effect on the tensile strength of the composite. but drastic 30% deterioration in the impact strengthwas observedat 15 % loading ofwollastonite. Notched izod impact strength tests indicate that SBC compatibilized blend increased the impact strength of blends to some extent. Maximum izod impact strength was noted with 7% SBC compatibilizer. Scanning electron microscopy micrographs showed the particle size of the dispersed phase was decreased in the continuous phase of PC by using the compatibilizer. A blend without compatibilizer showed brittle behavior while the blends containing compatibilizer showed ductile fracture.