Cocontinuous polymer blends: influence of viscosity and elasticity ratios of the constituent polymers on phase inversion

被引：125

作者：

Steinmann, S

Gronski, W

Friedrich, C

机构：

[1] Univ Freiburg, Inst Macromol Chem, D-79104 Freiburg, Germany

[2] Freiburg Mat Res Ctr FMF, D-79104 Freiburg, Germany

来源：

POLYMER | 2001年 / 42卷 / 15期

关键词：

polymer blends; cocontinuous morphology; viscosity ratio;

D O I：

10.1016/S0032-3861(01)00100-8

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 morphological properties of melt-mixed blends with cocontinuous phase morphology composed of poly-(methyl methacrylate) and polystyrene or poly(styrene-co-acrylonitrile) are studied. By means of digital image analysis of two-dimensional TEM pictures the mean form factor ff(irr) was established as a classificator. For 11 blend systems phase inversion concentrations were determined in this way. We studied the influence of viscosity and/or elasticity ratios on the phase inversion concentration. Most theories based on viscosity ratio disagree with our experimental data. The analysis of corresponding phase inversion concentrations based on elasticity ratio determined at a constant shear stress leads to a simple and good correlation. (C) 2001 Elsevier Science Ltd. AU rights reserved.

引用

页码：6619 / 6629

页数：11

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