MISCIBLE BLENDS CONTAINING A CRYSTALLIZABLE COMPONENT - POLY(VINYL ALCOHOL) POLY(ETHYLENEIMINE)

被引:4
作者
GUO, QP
机构
[1] Department of Materials Science and Engineering, University of Science and Technology of China, Hefei
关键词
D O I
10.1002/marc.1995.030161102
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Blends of poly(vinyl alcohol) (PVA1) with poly(ethyleneimine) (PEI) were prepared by casting from a common solvent. All blends show a single, composition dependent glass transition temperature (T-g), indicating that the blends are miscible in the amorphous state and in the melt. The overall crystallization rate of PVA1 in the blend decreases with increasing PEI content. The crystallinity index of PVA1 in the blend does not decrease greatly with PEI content up to a composition of 70/30 PVA1/PEI, since the T-g of the crystallizable component PVA1 is larger than that of the non-crystallizable component PEI. The T-g of the system PVA1/PEI decreases with increasing PEI content. The interaction parameter B of the two polymers in the melt was found to be -24 J/cm(3).
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收藏
页码:785 / 791
页数:7
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