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Preparation and properties of alkaline anion exchange membrane with semi‐interpenetrating polymer networks based on poly(vinylidene fluoride‐ co ‐hexafluoropropylene)
Author(s) -
Chen Chunming,
Chen Bingxin,
Hong Redong
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45775
Subject(s) - hexafluoropropylene , membrane , fluoride , polymer chemistry , materials science , ion exchange , thermal stability , hydroxide , acrylate , copolymer , interpenetrating polymer network , polymer , chemical engineering , chemistry , ion , organic chemistry , composite material , inorganic chemistry , tetrafluoroethylene , biochemistry , engineering
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. 2018 , 135 , 45775.