Styrene(St)was utilized as a co-monomer，while glycidyl methacrylate(GMA)or maleic anhydride(MAH)was employed as graft monomers.These graft monomers were then blended with polystyrene-ethylene-butylene-styrene(SEBS)and prepared into SEBS-g-(GMA-co-St)，SEBS-g-(MAH-co-St)，and SEBS-g-(GMA/MAH-co-St)graft copolymers using the melt free radical grafting technique.Subsequently，these graft copolymers were utilized as compatibilizers for melt blending with polypropylene(PP)and SEBS，and their effects on the thermal，optical，mechanical properties，and microstructure of the PP/SEBS blends were investigated.The results showed that after introducing SEBS graft copolymers into PP/SEBS blends，the comprehensive properties of the blends increased to varying degrees，and the performance increase was most significant when GMA was used as the graft monomer.SEBS-g-(GMA-co-St)graft copolymer with GMA as the graft monomer greatly improved the compatibility between PP and SEBS，and significantly enhanced the impact toughness of the blends.The impact strength and elongation at break of the blends reached a maximum value，which were 30 165.82 J/m² and 1 482.40%，respectively，exhibiting typical ductile fracture characteristics with folded toughening and multi-layer fracture on the fracture surface，while the tensile strength of the blends remained almost unchanged.In addition，the introduction of the graft copolymer improved the thermal stability of the blends and maintained their high transmittance，showing excellent optical properties.

Preparation and Properties of Graphene /HDPE Composites [J]. Journal of Shenyang University of Chemical Technology, 2023, 37(3): 233-238.