Effect of tacticity of poly(methyl methacrylate) on conductivity of poly(ethylene oxide)-poly(methyl methacrylate) blend-based polymeric electrolytes

被引：0

作者：

Florjanczyk, Z. ^{[1
]}

Such, K. ^{[1
]}

Wieczorek, W. ^{[1
]}

机构：

[1] Warsaw Univ of Technology, Warsaw, Poland

来源：

Journal of Macromolecular Science - Pure and Applied Chemistry | 1992年 / A29卷 / 10期

关键词：

Ionic conduction - Polymer blends - Polymethyl methacrylates;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Polymer electrolytes based on blends of poly(ethylene oxide) (PEO) with various stereoisomers of poly(methyl methacrylate) (PMMA) were studied by means of impedance spectroscopy and DSC. It was found that isotactic poly(methyl methacrylate) (IPMMA)-based electrolytes exhibit ambient temperature conductivities at least one order of magnitude higher than the electrolytes containing other stereoisomers of PMMA. The highest value of room temperature conductivity equal to 9 × 10-5 S/cm was measured for a sample containing 30 wt% IPMMA. The effect observed results from the presence of a flexible amorphous phase in PEO-IPMMA blends which is favorable for fast ionic transport. A small increase of ionic conductivity with decreasing molecular weight of the added atactic poly(methyl methacrylate) was also observed.

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