Effect of tacticity of poly(methyl methacrylate) on the miscibility with poly(vinyl acetate)

被引：3
|
作者：
Hsu, WP [1 ]
机构：
[1] Chia Nan Univ Pharm & Sci, Dept Appl Chem, Tainan 71710, Taiwan
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2004年 / 91卷 / 01期
关键词：
tacticity; miscibility; poly(methyl methacrylate); poly(vinyl acetate); binary blends;
D O I：
10.1002/app.13147
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 results of the miscibility between the chemically similar polymers poly(methyl methacrylate) (PMMA) and poly(vinyl acetate) (PVAc) published so far show inconsistent statements concerning miscibility. The problems may be due to differences in molecular weights, tacticity, and preparation methods of the polymers. This investigation was carried out by using either chloroform or tetrahydrofuran (THF) as solvent to prepare the blends, because to our knowledge, nobody has reported any tacticity effect of PMMA on the miscibility with PVAc. Therefore, in this article, different tactic PMMAs were used to mix with PVAc and their miscibility was studied calorimetrically. The results showed little effect of solvent and tacticity. PMMA and PVAc were determined to be almost completely immiscible because of the observation of two T-g's. (C) 2003 Wiley Periodicals, Inc.
引用
收藏
页码：35 / 39
页数：5
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