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Nathaniel T. Rebeck, Yifan Li and Daniel M. Knauss Poly(phenylene oxide) copolymer anion exchange membranes Journal of Polymer Science Part B: Polymer Physics 51

Article first published online: 28 JAN 2013 | DOI: 10.1002/polb.23245

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The morphology and phase separation of polymers within a fuel cell membrane plays a large role in its performance. This work compares block and random poly(phenylene oxide) copolymers in relation to their conductivity and water uptake as a function of ion exchange capacity. The block copolymers perform significantly better than the random analogs. The high conductivity suggests that the morphology is improved for ion conduction in the block copolymers.

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