SURFACE ENRICHMENT OF THE SOLUTION-CAST POLY(METHYL METHACRYLATE) POLY(VINYL ACETATE) BLENDS

被引：40
|
作者：
LEE, WK
CHO, WJ
HA, CS
TAKAHARA, A
KAJIYAMA, T
机构：
[1] PUSAN NATL UNIV,DEPT POLYMER SCI & ENGN,PUSAN 609735,SOUTH KOREA
[2] KYUSHU UNIV,FAC ENGN,DEPT CHEM SCI & TECHNOL,FUKUOKA 812,JAPAN
来源：
POLYMER | 1995年 / 36卷 / 06期
关键词：
SURFACE ENRICHMENT; POLY(METHYL METHACRYLATE); POLY(VINYL ACETATE);
D O I：
10.1016/0032-3861(95)93925-C
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The surface enrichment of blend films of poly(methyl methacrylate) (PMMA) and poly(vinyl acetate) (PVAc) cast from various solvents has been investigated by contact angle, X-ray photoelectron spectroscopic and attenuated total reflection Fourier transform infra-red spectroscopic measurements. The composition of each component was fixed at 50 wt%. The surfaces of miscible PMMA/PVAc blend films are found to be enriched in PVAc regardless of casting solvents. It was found that the surface enrichment of PVAc in the PMMA/PVAc blend is reduced when the as-cast blend film shows phase separation or when the phase-mixed blend is heated above the lower critical solution temperature and exhibits thermally induced phase separation.
引用
收藏
页码：1229 / 1234
页数：6
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