Thermal and FT-IR analysis of polymer blends based on functionalized polyolefins

Blends of poly(vinylchloride) and polystyrene with ethylene-propylene copolymers containing 4 and 10 wt% of ester groups in the side chains (introduced by functionalization with peroxides and diethylmaleate) were examined by DSC and FT-IR spectroscopy. The results point to the occurrence of miscibility phenomena between the polymer components depending on the functionalization degree of the copolymer, the thermal history and the preparation conditions. © 1988.