Synthesis and characterization of poly(ether sulfone ether ketone ketone) grafted poly(sulfopropyl methacrylate) for proton exchange membranes via atom transfer radical polymerization |
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Authors: | Rong Zeng Yiwang Chen Weihua Zhou Shuqin Xiao Jichun Xiao and Caisheng Song |
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Affiliation: | (1) Institute of Polymers, Department of Chemistry, Nanchang University, Xuefu Road 999, Nanchang, 330031, China;(2) Department of Chemistry, Jiangxi Normal University, Ziyang Road 99, Nanchang, 330027, China; |
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Abstract: | A series of copolymers of poly(ether sulfone ether ketone ketone) grafted poly(sulfopropyl methacrylate) (PESEKK-g-PSPMA) were successfully synthesized by atom transfer radical polymerization (ATRP) of sulfopropyl methacrylate (SPMA) after
chloromethylation of poly(ether sulfone ether ketone ketone) (PESEKK) backbone. The structure of the chloromethyl PESEKK and
the copolymers were carefully investigated. Variation of the polymerization time leads to the formation of copolymers with
different degree of sulfonation (DS). The properties of the proton exchange membranes such as water uptake, ion exchange capacity,
proton conductivity, and methanol permeability are studied with compared to those of Nafion 117 membranes and could be modulated
simply by control of the ATRP time. The copolymers exhibited much lower methanol permeability and higher proton conductivity
as compared with Nafion 117. |
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