An investigation of the kinetics of copolymerization of methyl methacrylatep-methyl styrene to high conversion: Modelling diff″sion-controlled termination and propagation by free-volume theory

An experimental investigation of the kinetics of the free radical copolymerization of methyl methacrylate (MMA) and p-methylstyrene (PMS) initiated with azobisisobutyronitrile (AIBN) was conducted at temperatures of 60°C and 80°C. Three levels of initiator concentration and initial monomer composition were studied. Conversions were measured gravimetrically and by gas chromatography (g.c.) and the weight average molecular weight (M̄w) by …