Effects of poly(methyl methacrylate)-block-poly(vinyl acetate) copolymer on the spinodal decomposition of corresponding homopolymer blends

被引：15
|
作者：
Chen, WJ [1 ]
Shen, Z [1 ]
Huang, XY [1 ]
Huang, JL [1 ]
机构：
[1] FUDAN UNIV,LAB MOL ENGN POLYMERS,SHANGHAI 200433,PEOPLES R CHINA
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 1997年 / 18卷 / 02期
关键词：
D O I：
10.1002/marc.1997.030180219
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Effects of adding a small amount of poly(methyl methacrylate)-block-poly(vinyl acetate) (PMMA-b-PVAc) to poly(methyl methacrylate)/poly(vinyl acetate) (PMMA/PVAc) blends with a lower critical solution temperature (LCST) phase diagram on the kinetics of late-stage spinodal decomposition (SD) were investigated by time-resolved light seat tering at 160 degrees C. It is found that the coarsening process of the structure was slowed down or accelerated upon addition of PMMA-b-PVAc depending on the composition of the block copolymer and the blend. The effect of the block copolymer on the domain size were interpreted as compatibilizing and incompatibilizing effects of the block copolymer on PMMA/PVAc blends based on the evaluation of changes in the stability limits of PMMA/PVAc with the addition of block copolymer using random phase approximation (RPA).
引用
收藏
页码：197 / 205
页数：9
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