Ionic conductivity in oligo(ethylene oxide) esters of poly(itaconic acid)-salt mixtures: effect of side-chain length
Ionic conductivity in oligo(ethylene oxide) esters of poly(itaconic acid)-salt mixtures: effect of side-chain length
复制标题
聚衣康酸盐混合物的低聚环氧乙烷酯的离子电导率：侧链长度的影响
DOI：
10.1016/0032-3861(91)90083-u
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
Agnes C. S. Martin
中科院分区：
文献类型：
--
作者：
J. Cowie;Agnes C. S. Martin
制备了一系列具有低聚（环氧乙烷）侧链的聚衣康酸酯，其中侧链包含1至7个环氧乙烷单元。这些材料可以与liclo4和NaClO4形成无定形固溶体。研究了这些聚合物-盐混合物的玻璃化转变温度和交流离子电导率与侧链长度、盐浓度和温度的关系。研究发现，在400 K至环境温度范围内，每侧链有7个环氧乙烷单元的聚合物产生的聚合物电解质的电导率在10−3至10−6S cm−1之间。在这些体系中，聚合物链的柔韧性似乎是一个控制特征，反映在聚合物盐值中。
A series of poly(itaconic acid) esters with oligo(ethylene oxide) side chains have been prepared in which the side chains contain from one to seven ethylene oxide units. These materials can form amorphous solid solutions with LiClO4and NaClO4. The glass transition temperatures and a.c. ionic conductivities of these polymer-salt mixtures have been examined as a function of side-chain length, salt concentration and temperature. It has been found that the polymer with seven ethylene oxide units per side chain produces a polymer electrolyte with the highest conductivities between 10−3and 10−6S cm−1for the temperature range 400 K to ambient. In these systems the flexibility of the polymer chain seems to be a controlling feature as reflected in the polymer-saltTgvalues.