Rheology and morphology of in-situ compatibilized PP/PE/PS ternary polymer blends via Friedel-Crafts alkylation reaction: PP-matrix

Polyolefin/polystyrene blends are immiscible and they display poor mechanical properties. Different methods have been utilized to compatibilize these blends. Addition of a thirdpolymeric component such as SBS and SEBS copolymers is a well-known method for compatibilization of these blends. Insitucompatibilization using Friedel-Crafts alkylation reaction is another growing and successful technique for compatibilization of these blends. In this methodpolyolefin/polystyrene copolymer is in-situ generated at the blend interface. In this case most of previous studies havebeen focused on compatibiliziation of binary polyolefin/polystyrene blends [1]. The main objective of present work was to study the effect of in-situcompatibilization using Friedel-Crafts alkylation reaction on rheology and morphology of ternary PP/PE/PS blends with PP as the major phase