Facile synthesis of amphoteric ion exchange membrane by radiation grafting of sodium styrene sulfonate andN,N-dimethylaminoethyl methacrylate for vanadium redox flow battery
Facile synthesis of amphoteric ion exchange membrane by radiation grafting of sodium styrene sulfonate andN,N-dimethylaminoethyl methacrylate for vanadium redox flow battery
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DOI：
10.1002/pola.26949
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发表时间：
2013-12
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通讯作者：
Jie Yuan;Chuhong Yu;J. Peng;Yu Wang;Jun Ma;J. Qiu;Jiuqiang Li;Maolin Zhai
中科院分区：
文献类型：
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作者：
Jie Yuan;Chuhong Yu;J. Peng;Yu Wang;Jun Ma;J. Qiu;Jiuqiang Li;Maolin Zhai
使用 γ 辐射技术将苯乙烯磺酸钠 (SSS) 和 N,N-二甲基氨基乙基甲基丙烯酸酯 (DMAEMA) 接枝到聚偏二氟乙烯 (PVDF) 薄膜中。 SSS 可以与 DMAEMA 成功共接枝，但很难单独接枝到 PVDF 薄膜中。通过随后的质子化过程，可以轻松且环保地合成两性离子交换膜（AIEM）。接枝度 (DOG) 随着吸收剂量的增加而增加，并在 40 kGy 时趋于稳定。显微 FTIR 和 X 射线光电子能谱分析证实了接枝膜中设计单元和 DMAEMA 单元季铵化的存在。季铵化和接枝同时发生，使其成为一种一步合成季铵化AIEM的独特方法。最后，将DOG为43%的AIEM组装在全钒液流电池（VRFB）系统中，放置85小时后VRFB仍保持高于1.4 V的开路电压，比Nafion117膜的开路电压要长得多。 © 2013 Wiley periodicals, Inc. J. Polym。科学，A 部分：聚合物。化学。 2013, 51, 5194–5202
Sodium styrene sulfonate (SSS) and N,N-dimethylaminoethyl methacrylate (DMAEMA) are grafted into poly(vinylidene difluoride) (PVDF) film using γ-radiation techniques. SSS could be co-grafted successfully with DMAEMA, although it is difficult to be grafted solely into PVDF films. Through subsequent protonation process, an amphoteric ion exchange membrane (AIEM) is synthesized facilely and environmentally benignly. The degree of grafting (DOG) increases with absorbed dose and levels off at 40 kGy. Micro-FTIR and X-ray photoelectron spectroscopy analyses confirm the existence of the designed units and quaternization of DMAEMA units in the grafted films. The quaternization and grafting occurring at the same time makes it a unique way to synthesize quaternized AIEM in one step. Finally, an AIEM with a DOG of 43% is assembled in the vanadium redox flow battery (VRFB) system, and the VRFB maintains an open circuit voltage higher than 1.4 V after placed for 85 h, which is much longer than that with Nafion117 membrane. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 5194–5202