| 학회 | 한국고분자학회 |
| 학술대회 | 2002년 가을 (10/11 ~ 10/12, 군산대학교) |
| 권호 | 27권 2호, p.121 |
| 발표분야 | 고분자 가공/블렌드 |
| 제목 | Effect of Silicone-Based Composite Rubber Particles on Their Fusion and Toughening Behavior in PVC/Rubber Melt Blends |
| 초록 | Poly(dimethyl siloxane) based composite latex which has an elastomeric core of poly(dimethyl siloxane) and a glassy shell composed of polystyrene and poly(methyl methacrylate) was prepared using ring-opening polycondensation of cyclic organosiloxane monomer and emulsion polymerization for the grafting of polystyrene and poly(methyl methacrylate) onto the silicone rubber particle. The grafting efficiency can be adjusted from 30% to 90% depending on the composition of shell component. The fusion behavior of PVC/silicone rubber melt blends system was investigated in terms of fusion time, maximum and equilibrium torque using Haake internal mixing system. The time needed for the initial fusion was largely dependent on the composition of shell, i.e., increasing poly(methyl methacrylate) content reduced the fusion time in PVC blends system. The toughening behavior of silicone based composite rubber particles was also examined. The silicone rubber particle with PMMA-rich shell component showed superior toughening efficiency in PVC matrix system. This can be understood in terms of thermodynamic compatibility between PVC and PMMA. The adhesion of PVC and silicone based rubber particle was also examined using SEM observation on the fractured surface. |
| 저자 | 박민석1, 우종표2, 안정헌*, 이찬홍* |
| 소속 | 1명지대, 2*LG화학 기능성수지(연) |
| 키워드 | Melt Blends; Silicone; Toughening Behavior; |
