Synthesis and properties of novel side-chain-sulfonated polyimides from bis[4-(4-aminophenoxy)-2-(3-sulfobenzoyl)]phenyl sulfone
Synthesis and properties of novel side-chain-sulfonated polyimides from bis[4-(4-aminophenoxy)-2-(3-sulfobenzoyl)]phenyl sulfone
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DOI：
10.1016/j.polymer.2006.02.045
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发表时间：
2006-04-05
期刊：
影响因子：
4.6
通讯作者：
Okamoto, K
中科院分区：
文献类型：
--
作者：
Chen, SW;Yin, Y;Okamoto, K
合成了一种新型侧链磺化芳香二胺双[4-（4-氨基苯氧基）-2-（3-磺基苯甲酰基）]苯砜（BAPSBPS）。以1，4，5，8-萘四甲酸二酐、BAPSBPS和非磺化二胺为单体，通过无规和顺序嵌段共聚合成了磺化共聚聚酰亚胺。它们在普通非质子溶剂中表现出良好的溶解性和350 ℃的高磺化温度，表明磺酸基团的高稳定性。在0.5g/dl和35 ℃下，比浓粘度在0.4- 1.8dl/g的范围内。制备了具有相当高的机械强度的柔性和坚韧膜。它们表现出各向异性的膜溶胀，厚度上的溶胀大于平面上的溶胀。考虑到它们较低的离子交换容量（IEC），它们显示出相当高的质子传导率（或）。例如，IEC为1.54 mequiv/g的膜在60 ℃下在水中和70%RH下分别显示出81和11 mS/cm的OR值。(c)2006爱思唯尔有限公司保留所有权利。
A novel side-chain-sulfonated aromatic diamine of bis[4-(4-aminophenoxy)-2-(3-sulfobenzoyl)lphenyl sulfone (BAPSBPS) was synthesized. Sulfonated copolyimides were synthesized by random and sequenced block copolymerization of 1,4,5,8-naphthalene tetracarboxylic dianhydride, BAPSBPS and nonsulfonated diamine. They displayed good solubility in common aprotic solvents and high desulfonation temperature of 350 degrees C, suggesting the high stability of sulfonic acid groups. The reduced viscosity was in the range of 0.4-1.8 dl/g at 0.5 g/dl and 35 degrees C. Flexible and tough membranes with reasonably high mechanical strength were prepared. They showed anisotropic membrane swelling with larger swelling in thickness than in plane. They displayed reasonably high proton conductivity (or), taking their lower ion exchanging capacity (IEC) into account. For example, the membrane with IEC of 1.54 mequiv/g showed or values of 81 and 11 mS/cm in water and 70% RH, respectively, at 60 degrees C. (c) 2006 Elsevier Ltd. All rights reserved.