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以苯乙烯 /马来酸酐共聚物为骨架 ,聚乙二醇单甲醚为侧链合成了 3种不同侧链长度的梳状高分子聚合物 ,制成了锂盐络合物薄膜 .动态力学性能研究结果表明 ,本体系是主链刚性、侧链较柔软的梳状接枝聚合物 .应用时间温度等效原理 ,选择Tα 作为参考温度 ,建立了主曲线 ,得到了移动因子图和等自由体积图 .Williams、Landel和Ferry(WLF)经验方程的两个参数C1、C2 随着盐浓度增加而增大 .若T0 =50℃作为参考温度 ,平均松弛时间lgτc 与锂盐浓度C呈线性关系 .随着侧链分子量增加 ,主曲线向高频率移动 ;平均松弛时间lgτn 与侧链分子量的关系也是线性的 ;另外随着盐的不同 ,主曲线也会产生移动 ,表明盐种类对松弛时间产生影响 .
Three kinds of comb polymers with different side chain length were synthesized by using styrene / maleic anhydride copolymer as backbone and polyethylene glycol monomethyl ether as side chain to prepare lithium salt complex film. The results of the performance study show that the present system is a comb-shaped graft polymer with a rigid main chain and a softer side chain.Using the time-temperature equivalence principle, Tα is selected as the reference temperature, and the main curve is established. Volumetric plots. The two parameters C1, C2 of empiric equation of Williams, Landel and Ferry (WLF) increase with increasing salt concentration. If T0 = 50 ℃ as the reference temperature, the average relaxation time lgτc is linear with lithium salt concentration C . As the molecular weight of the side chain increases, the main curve shifts to higher frequencies; the mean relaxation time, lgτn, is also linear with the molecular weight of the side chains; in addition, the main curve shifts as salt varies, influences .