Novel Anion Exchange Membranes from Poly(aryl ether)s with Quaternary Guanidinium Groups

Abstract:

A series of fluorinated poly(aryl ether oxadiazole)s (FPEO) were synthesized and brominated with N-bromosuccinmide (NBS) which were then functionalized with quaternary guanidinium to get fluorinated anion exchange membranes （AEM）with pendant quaternary guanidinium Groups. The structure of resulting polymers was characterized by FTIR spectroscopy. The properties of the obtained membranes were investigated in terms of ion exchange capacity (IEC), swelling ratio, area resistance and vanadium permeability. The results showed that the novel anion exchange membranes possess much higher selectivity in VRB system. The permeation rate of vanadium ions of GFPEO is 0.21×10-7 cm2min-1 which is much lower compared with that of Nafion.

• Periodical: Advanced Materials Research (Volumes 560-561)
• Pages: 864-868
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.560-561.864
• Online since: August 2012
• Authors: Yu Fang Cui, Jin Yan Du, Yu Ming Shang, Yao Wu Wang, Jin Hai Wang, Ya Fei Lv, Shu Bo Wang
• Keywords: Anion Exchange Membrane, Guanidine, Poly(aryl ether), Vanadium Redox Battery

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