Polybutadiene grafting and crosslinking in high‐impact polystyrene bulk thermal process

The grafting and the crosslinking of polybutadiene during the bulk thermal polymerization of high‐impact polystyrene were studied. The kinetic equations for these two reactions were derived by the use of the moments of the distribution functions. This kinetic model indicates that both the density of grafting and the degree of crosslinking increase with the increasing temperature of polymerization and, most significantly, with the increasing conversion of styrene.