具有多重玻璃化转变的梳状聚合物的合成、表征和导电性—侧链分子量为550的聚乙二醇单甲醚  

Synthesis 、Characterization and Ionic Conductivity of a Novel Comblike Polymer with Multi-Glass Transition—Poly(ethylene glycol)methyl Ether of M.W. 550 as Side Chain

作　　者：齐力[1] 林云青[1] 景遐斌[1] 王佛松[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《功能高分子学报》2000年第3期266-270,共5页Journal of Functional Polymers

摘　　要：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。Using poly(ethylene glycol)methyl ether of M.W.550 as side chain, poly(styrene-co-maleic anhydride) as backbone, multiethylene glycol poly(styrene-co-maleic anhydride)ate was synthesized. Synthetic condition、structure of product and performance were studied by IR、elemental analysis、DSC and TG. The results indicated that reaction followed the reaction equation strictly. Refined product was amorphous comblike polymer. The T g is 30.68 ℃,T d is 120 ℃. The dynamic mechanical properties of PS53 and ionic conductivity of PS53-Li salt complexes were studied. It is found that α and β transitions are 28 ℃and -47.7 ℃ respectively. The relationship between salt concentration and conductivity shows two peaks or multi-peaks with increasing the salt concentration. The relationship between conductivity and temperature is in accord with VTF equation. The highest ambient conductivity is 4.2×10 -5 S·cm -1 .

关 键 词：马来酸酐 梳状聚合物 导电高分子 合成 导电性 

分 类 号：O631.23[理学—高分子化学]