Effect of sulfonic acid‐functionalized polysilsesquioxane on new semifluorinated sulfonated polytriazole composites and investigation of proton exchange membrane properties,Polymer Engineering and Science

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Effect of sulfonic acid‐functionalized polysilsesquioxane on new semifluorinated sulfonated polytriazole composites and investigation of proton exchange membrane properties
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2020-10-16 , DOI: 10.1002/pen.25554
Sayantani Saha ₁ , Susanta Banerjee ₁

Affiliation

A new semifluorinated sulfonated copolytriazole is synthesized, maintaining a particular degree of sulfonation of 80% following the click reaction of two terminal azides 1,4‐bis‐[{2′‐trifluromethyl 4′‐(4″‐azidophenyl)phenoxy}]phenyl, and 4,4′‐diazido‐2,2′‐stilbenedisulfonic acid disodium salt with equal molar amounts of two dialkyne monomers namely, 1,3‐diethynylbenzene and 3,5‐bis(prop‐2‐ynyloxy)benzoic acid and designated as PTEHCSH‐80. Further, the copolytriazole is used to prepare polymer composites employing the sol‐gel reaction of the starting precursor sol 3‐(trihydroxylsilyl) propane‐1‐sulfonic acid. The weight percentage (wt%) of the filler is varied from 0 to 10 wt%, and a series of polymer composite films are prepared and abbreviated as PTEHCSH‐80/X (where X is wt% of the filler, X = 0. 2.5, 5.0, 7.5, 10.0). All the polymer composites are characterized through FTIR spectroscopic techniques. The composite films revealed various desirable properties such as high thermochemical and dimensional and mechanical stabilities in their corresponding acid form. Moreover, the composites exhibited proton conductivities ranging from 62 to 98, 117 to 182, and 131 to 195 mS/cm at three different temperatures 30°C, 80°C, and 90°C, respectively, in a hydrated state.

中文翻译：

磺酸功能化聚倍半硅氧烷对新型半氟化磺化聚三唑复合材料的影响及质子交换膜性能的研究

合成了一种新的半氟化磺化共聚三唑，在两个末端叠氮化物1,4-双-[{2'-三氟甲基4'-（4″-叠氮基苯基）苯氧基}]苯基发生点击反应后，可以保持80％的特定磺化度，以及4,4'-二叠氮基-2,2'-苯乙烯二磺酸二钠盐，其等摩尔量的两种二炔单体，即1,3-二乙炔基苯和3,5-双（丙-2-炔氧基）苯甲酸作为PTEHCSH‐80。此外，共聚三唑还用于通过起始前体溶胶3-（三羟基甲硅烷基）丙烷-1-磺酸的溶胶-凝胶反应制备聚合物复合材料。填料的重量百分比（wt％）从0到10 wt％不等，制备了一系列聚合物复合膜并将其缩写为PTEHCSH-80 / X（其中X是填料的wt％，X = 0。 2.5、5.0、7.5、10.0）。所有聚合物复合材料均通过FTIR光谱技术进行表征。复合膜以其相应的酸形式显示出各种合乎需要的性质，例如高热化学和尺寸及机械稳定性。此外，在水合状态下，在30°C，80°C和90°C的三种不同温度下，复合材料的质子电导率分别为62至98、117至182和131至195 mS / cm。

更新日期：2020-10-16

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