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- W2896463138 abstract "4-formyl dibenzo-18-crown-6 (FDB18C6) was synthesized through dibenzo-18-crown-6 (DB18C6), and it was added into polyvinyl alcohol (PVA) through acetal reaction to form a new type of membrane (FX%-P). Then the FX%-P membranes were immersed into the KOH solution to prepare FX%-P-K membranes, which through the complexation of crown ion on K+. The complex crown ether cation was successfully applied as anion conducting groups. The characterization and experimental results showed that FX%-P-K membranes had already successfully synthesized, and possess better anionic conductivity and alkali resistance stability compared with other anion exchange membranes (AEMs). The water uptake and swelling ratio of F20%-P-K membrane was reduced to 25.0% and 14.5%, separately, suppressed effectively the excessive swelling of PVA. And the dimensional stability of F20%-P-K was 21.1%, which reflected excellent membrane stability. In addition, especially outstanding performance was the anionic conductivity of FX%-P-K membranes increased from 7.63 mS·cm−1 to 25.32 mS·cm−1 at 70 °C, which confirmed excellent anionic conductive ability. After alkali treatment of preparing membranes, the conductivity degradation rate is less than 8.6% reflected superb alkali resistance. The aforementioned results defined that the FX%-P-K membranes comply with the requirements in the anion exchange membrane fuel cell." @default.
- W2896463138 created "2018-10-26" @default.
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- W2896463138 date "2019-03-01" @default.
- W2896463138 modified "2023-10-16" @default.
- W2896463138 title "4-formyl dibenzo-18-crown-6 grafted polyvinyl alcohol as anion exchange membranes for fuel cell" @default.
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- W2896463138 doi "https://doi.org/10.1016/j.eurpolymj.2018.10.020" @default.
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