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- W3046500924 abstract "Novel functionalized polysulfone with high local density of sulfonic acid groups, N,N-bis(sulfopropyl)aminyl-4-phenyl polysulfone or O,O′-bis(sulfopropyl)resorcinol-5-yl-4-phenyl polysulfone (PSF-X-C3H6SO3H, X = N or O) are synthesized. These polymers are synthesized by bromination of polysulfone followed by Suzuki cross-coupling reaction to graft the aminophenyl groups and the dimethoxyphenyl groups onto the polymeric backbone, followed by introduction of the sulfopropyl groups via sultone ring-opening reaction. In addition, the composite membrane of PSF-O-C3H6SO3H and PSF-N-C3H6SO3H is also synthesized for comparison. The maximum proton conductivity of composite PSF-O-C3H6SO3H and PSF-N-C3H6SO3H reaches 46.66 mS cm−1 at 95 °C and 90% RH, higher than PSF-O-C3H6SO3H (42.06 mS cm−1) and PSF-N-C3H6SO3H (38.76 mS cm−1). Meanwhile, the composite exhibits compromised water uptake and swelling ratio, and low methanol permeability. The excellent overall performance of the composite is attributed to phase-separation between the hydrophilic and the hydrophobic subphases, and the hydrogen-bonding network developed in the hydrophilic subphases." @default.
- W3046500924 created "2020-08-07" @default.
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- W3046500924 date "2020-09-01" @default.
- W3046500924 modified "2023-10-16" @default.
- W3046500924 title "N,N-bis(sulfopropyl)aminyl-4-phenyl polysulfone and O,O′-bis(sulfopropyl)resorcinol-5-yl-4-phenyl polysulfone composite membrane for proton exchange membrane fuel cells" @default.
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- W3046500924 doi "https://doi.org/10.1016/j.ijhydene.2020.06.172" @default.
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