Simultaneous cross-linking as a way to control physical growth of random ethylene-propylene copolymer during formation of high-impact polypropylene

Regulating rubber growth in polyolefin in-reactor alloy PP/EPR is achieved by prompting EPR polymer chains' simultaneous cross-linking during its polymerization. Cross-linking transforms EPR's dispersion morphology from segregated droplet aggregates to discrete particles, which helps a better understanding of how EPR is grown in the in-reactor alloy and provides a new strategy for polyolefin in-reactor alloy technology innovation.405