材料科学
亚苯基
混溶性
甲基丙烯酸缩水甘油酯
硫化物
甲基丙烯酸酯
高分子化学
复合材料
共聚物
聚合物
冶金
作者
Saori Nara,Hiroki Sagawa,Hiromu Saito,Hiroki Oyama
摘要
Abstract Poly(phenylene sulfide) (PPS) is a high‐performance super‐engineering plastic, but is brittle. In this study, super‐tough PPS‐based blends were successfully generated by melt blending PPS with poly(ethylene‐ ran ‐methacrylate‐ ran ‐glycidyl methacrylate) (EGMA) and poly(phenylsulfone) (PPSU) at (56/14/30) PPS/EGMA/PPSU composition, and their toughening mechanisms were investigated in detail. It was demonstrated the interfacial reaction between PPS and EGMA and partial miscibility between PPS and PPSU, both play important synergistic roles on the toughening. The interfacial reaction between PPS and EGMA contributes to the reduction of the PPSU domain size by the increased viscosity of the PPS matrix containing EGMA, and the increased mobility of EGMA chains by negative pressure effect. The partial miscibility between PPS and PPSU contributes to the increased interfacial adhesion between PPS and PPSU, resulting in effective propagation of the impact to the domains, and the increased mobility of not only PPSU chains but also PPS chains, causing a reduction in crystallization.
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