| 초록 |
Applications of ethylene-propylene-diene terpolymer (EPDM) have often been limited because of its low resistance to oil. In this study, polyacrylate copolymers (rP) were synthesized through reversible addition-fragmentation chain transfer (RAFT) technique having sulfur units. The rP was melt-mixed with EPDM in a Brabender for a grafting-onto radical transfer process. For comparison, polyacrylate copolymer (fP) without any sulfur units was synthesized through free radical polymerization. The cured EPDM/fP mixture showed inferior tensile strength and elongation at break values to those of cured EPDM. In contrast, the cured EPDM/rP exhibited high tensile strength and elongation at break values, which were comparable or even superior to those of cured EPDM. Oil resistance test exhibited much improved oil resistance characteristics of the EPDM/rP than those of EPDM and EPDM/fP. The results demonstrated potential grafting-onto of rP onto EPDM, affording grafted hybrid polymer materials. |
