a.College of Materials Science and Engineering, Fuzhou University, Fuzhou 350116, China
b.College of Chemistry, Fuzhou University, Fuzhou 350116, China
zlxie@fzu.edu.cn (Z.L.X.)
dongyang.chen@fzu.edu.cn (D.Y.C.)
收稿:2019-06-06,
修回:2019-7-5,
录用:2019-8-14,
网络首发:2019-10-11,
纸质出版:2020-03
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Xiong, L.; Hu, Y. F.; Zheng, Z. G.; Xie, Z. L.; Chen, D. Y. Chloromethylation and quaternization of poly(aryl ether ketone sulfone)s with clustered electron-rich phenyl groups for anion exchange membranes. Chinese J. Polym. Sci. 2020, 38, 278–287.
Lei Xiong, Yuan-Fang Hu, Zi-Gui Zheng, et al. Chloromethylation and Quaternization of Poly(aryl ether ketone sulfone)s with Clustered Electron-rich Phenyl Groups for Anion Exchange Membranes[J]. Chinese Journal of Polymer Science, 2020, 38(3): 278-287.
Xiong, L.; Hu, Y. F.; Zheng, Z. G.; Xie, Z. L.; Chen, D. Y. Chloromethylation and quaternization of poly(aryl ether ketone sulfone)s with clustered electron-rich phenyl groups for anion exchange membranes. Chinese J. Polym. Sci. 2020, 38, 278–287. DOI: 10.1007/s10118-020-2340-y.
Lei Xiong, Yuan-Fang Hu, Zi-Gui Zheng, et al. Chloromethylation and Quaternization of Poly(aryl ether ketone sulfone)s with Clustered Electron-rich Phenyl Groups for Anion Exchange Membranes[J]. Chinese Journal of Polymer Science, 2020, 38(3): 278-287. DOI: 10.1007/s10118-020-2340-y.
Ion segregation is critically important for achieving high ion conductivity for anion exchange membranes (AEMs). Herein
a new bisphenol monomer bearing ten electron-rich phenyl groups was designed and polymerized with various amounts of electron-deficient 4
4′-dihydroxydiphenylsulfone and 4
4′-difluorobenzophenone to yield dense and selective reaction sites for chloromethylation and quaternization. As the most challenging step
chloromethylation was optimized by tuning the reaction temperature
reaction time
and reactant ratios. Ion exchange capacity
water uptake
anion conductivity
mechanical stability
and alkaline stability of the resulting AEMs were characterized in detail. It is found that chloromethylation reaction needed to be carried out at low equivalent of chloromethylation agents to avoid undesirable crosslinking. The QA-PAEKS-20 sample with an IEC of 1.19 mmol·g
−1
exhibited a Cl
–
conductivity of 11.2 mS·cm
−1
and a water uptake of 30.2% at 80 °C
which are promising for AEM applications.
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