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以分子量为 5 5 0的聚乙二醇单甲醚为侧链 ,苯乙烯 /马来酸酐共聚物为骨架 ,合成了苯乙烯 /马来酸酐共聚物多缩乙二醇酯。用红外光谱、元素分析、DSC、热失重等方法 ,对合成条件、产物结构和性能进行了研究。结果表明 :反应严格按照反应方程进行 ,精制产物是非晶的梳状聚合物。玻璃化转变温度为 30 .6 8℃ ,分解温度为 1 2 0℃。对动态力学性能及其锂盐复合物离子导电性进行了研究 ,表明α转变温度和β转变温度分别是 2 8℃和 -4 7.7℃。随着盐浓度的增加 ,盐浓度与电导率的关系呈现出双峰或多峰。电导率与温度的依赖关系符合VTF方程。室温电导率最高可达 4.2× 1 0 -5 S·cm-1。
Polyethylene glycol monomethyl ether of styrene / maleic anhydride was synthesized by using polyethylene glycol monomethyl ether with a molecular weight of 550 as the side chain and styrene / maleic anhydride copolymer as the backbone. The synthesis conditions, product structure and properties were studied by means of IR, elemental analysis, DSC and thermogravimetry. The results show that the reaction is carried out in strict accordance with the reaction equation, and the refined product is an amorphous comb polymer. The glass transition temperature is 30.68 ℃, the decomposition temperature is 120 ℃. The dynamic mechanical properties and the ionic conductivity of the lithium salt complex have been investigated. The results show that the α transition temperature and β transition temperature are 28 ℃ and -4 7.7 ℃, respectively. With the increase of salt concentration, the relationship between salt concentration and conductivity showed bimodal or multimodal. Conductivity and temperature dependence of the VTF equation. Room temperature conductivity up to 4.2 × 10 -5 S · cm-1.