Effect of the type and concentration of ionogenic emulsifiers on graft polymerization when obtaining methyl methacrylate-butadiene-styrene copolymers☆

Abstract A study was made of the effect of the type of anionogenic emulsifiers, which differ in functional groups and the saturation of the hydrocarbon chain, on the rate of latex graft polymerization of methyl methacrylate and styrene with a butadienestyrene latex. It was shown that saturation of the hydrocarbon chain of the emulsifier has a marked effect on the rate of polymerization; the existence of a double bond in the hydrocarbon chain slows down graft polymerization. A study was made of the effect of adsorption saturation of a butadiene-styrene latex on the degree of grafting the methyl methacrylate-styrene copolymer to a butadiene-styrene elastomer. It was established that with an increase in the level of adsorption saturation, the degree of grafting decreases, consequently, the efficiency of the copolymer as a modifier of the impact strength of PVC decreases.