Plateau Modulus and Entanglements in Styrenics Copolymers

The plateau modulus Go and the entanglement molecular weight Me of Styrene-co-Acrylonitrile (SAN) and Styrene-co-Methylmethacrylate (SMMA) random copolymers were measured as a function of composition. It comes out that a statistical copolymer can be treated as a “forced miscible blend”.