Theoretical Aspects of Mechanochemical Synthesis of Dynamically Vulcanized Nanocomposites Based on Thermoplastic Elastomers

Abstract: This paper presents the results of an investigation of the effect of bentonite concentration on the main physical and mechanical properties of nanocomposites in elastoplasts based on a mixture of random polypropylene with nitrile–butadiene rubber of various types. To improve the compatibility of the mixed components, a graft copolymer of polypropylene with maleic anhydride is used as a compatibilizer. The mechanism of compatibilization of the graft copolymer in the boundary region, in the zone of contact between random polypropylene and nitrile–butadiene rubber, is considered. The optimal concentrations of cross-linking components at which it is possible to obtain dynamically vulcanized nanocomposites is determined. © 2021, Pleiades Publishing, Ltd.