3 years ago

Preparation and properties of alkaline anion exchange membrane with semi-interpenetrating polymer networks based on poly(vinylidene fluoride-co-hexafluoropropylene)

Preparation and properties of alkaline anion exchange membrane with semi-interpenetrating polymer networks based on poly(vinylidene fluoride-co-hexafluoropropylene)
Bingxin Chen, Redong Hong, Chunming Chen
Alkaline anion exchange membrane with semi-interpenetrating polymer network (s-IPN) was constituted based upon quaternized poly(butyl acrylate-co-vinylbenzyl chloride) (QPBV) and poly(vinylidene fluoride-co-hexafluoropropylene) [P(VDF-HFP)]. The QPBV was synthesized via the free radical copolymerization, followed by quaternization with N-methylimidazole. The s-IPN system was constituted by melting blend of QPBV and P(VDF-HFP), and then crosslinking of P(VDF-HFP). Ion exchange capacity, water uptake, mechanical performance, and thermal stability of these membranes were characterized. TEM showed that alkaline anion exchange membrane exhibited s-IPN morphology with microphase separation. The fabricated s-IPN membrane exhibited hydroxide ion conductivity up to 15 mS cm−1 at 25 °C and a maximum DMFC power density of 46.55 mW cm−2 at a load current density of 98 mA cm−2 at 30 °C. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 135, 45775.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/app.45775

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