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Issue 17, 2013
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Enhancement of hydroxide conduction by self-assembly in anion conductive comb-shaped copolymers

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Abstract

An anion exchange membrane (AEM) was prepared from comb-shaped copolymers bearing locally and densely functionalized side chains. In this study, we synthesized the graft copolymer of bromomethylated poly(phenylene oxide)-graft-quaternary ammonium functionalized 4-vinylbenzyl chloride (BPPO-g-QVBC), using an activator regenerated by electron transfer for atom transfer radical polymerization (ARGET ATRP) of QVBC from a BPPO macroinitiator. The BPPO-g-QVBC graft copolymers with a combination of a high graft density and appropriate graft length present advanced materials for AEMs. Flexible and transparent membranes were obtained by casting the polymers from NMP solutions, and displayed a microphase-separated morphology with nano-sized ionic clusters embedded in the hydrophobic BPPO matrix. Accordingly, the resultant membranes show considerably high conductivities, up to 0.1 S cm−1 at 80 °C, derived from the special polymer architecture. This study gives some pioneering insights and directions from the viewpoint of macromolecular design to prepare highly conductive AEMs.

Graphical abstract: Enhancement of hydroxide conduction by self-assembly in anion conductive comb-shaped copolymers

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Publication details

The article was received on 01 Apr 2013, accepted on 18 Jun 2013 and first published on 19 Jun 2013


Article type: Paper
DOI: 10.1039/C3PY00421J
Citation: Polym. Chem., 2013,4, 4612-4620
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    Enhancement of hydroxide conduction by self-assembly in anion conductive comb-shaped copolymers

    J. Ran, L. Wu and T. Xu, Polym. Chem., 2013, 4, 4612
    DOI: 10.1039/C3PY00421J

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