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- W2973164675 endingPage "116078" @default.
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- W2973164675 abstract "Abstract We are reporting synthesis of novel cross-linking agent 1,4-bis(4-vinylbenzyl)-1,4-diazabicyclo[2,2,2]octane-1,4-diium) and cross-linked dehydro-halogenated poly (vinylidene fluoride-co-hexafluoro propylene) (DHPVDF-co-HFP) based anion exchange membranes (AEMs). Reported di-quaternized fluorinated polymer based AEMs are analysed for stabilities, and different properties to assess their suitability for electrodialysis. Attractive structural features such as multi-cationic side chain, fluorinated main polymer chain, absence of SN2 mechanism, and β-hydrogen elimination, are responsible for their excellent performance. Optimized splendid AEM (Cr-AEM/1.02) exhibited 23.5% water content, 1.02 × 10−3 equiv/g ion-exchange capacity, and 5.7 × 10−2 S/cm conductivity at 30 °C, which are superior than other 1,4-diazabicyclo[2,2,2]octane/imidazolium functional groups containing AEMs reported in the literature, or commercialized AEMs. Because of di-quaternized nature, high permselectivity (0.94–0.96) of the reported membrane (Cr-AEM/1.02) has been obtained chronopotentiometric and membrane potential studies. Relatively high limiting current density (Ilim) (2.36 mA/cm2) of Cr-AEM-1.02 provides a broad window to achieve fast electrodialysis under relatively high applied voltage/current without any electrode reaction. Further, about 95% current efficiency and 3.1 kWhr kg−1 energy consumption confirmed efficient nature of Cr-AEM/1.02 for salt removal by electrodialysis." @default.
- W2973164675 created "2019-09-19" @default.
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- W2973164675 date "2020-03-01" @default.
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- W2973164675 title "High performance cross-linked dehydro-halogenated poly (vinylidene fluoride-co-hexafluoro propylene) based anion-exchange membrane for water desalination by electrodialysis" @default.
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- W2973164675 doi "https://doi.org/10.1016/j.seppur.2019.116078" @default.
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