Considerations concerning the glass temperature of blends of miscible polymers

被引：0
|
作者：
Hans Adam Schnider
机构：
[1] Institut für Makromolekulare Chemie und Freiburger Materialforschungszentrum,
[2] FMF,undefined
[3] Stefan-Meier-Strasse 21,undefined
[4] D-79104 Freiburg,undefined
[5] Germany,undefined
来源：
Polymer Bulletin | 1998年 / 40卷
关键词：
Polymer; Entropy; Interaction Effect; Polymer Blend; Solubility Parameter;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
It is shown that experimental Tg vs. composition data of miscible polymer blends can be adapted by a third order Tg vs. composition equation characterized by two parameters, K1 and K2, which result in the supposition that besides the thermodynamically claimed favourable energetic hetero-interaction, contributions of conformational mixing entropy are responsible for miscibility. K1 comprises mainly energetic interaction effects, whereas K2 is due to effects of the conformational mixing entropy. It further results surprisingly that K1 is roughly correlated with the difference of the solubility parameters of the blend components. At the moment no explanation can be offered for this observation.
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页码：321 / 328
页数：7
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