Journal
MACROMOLECULES
Volume 47, Issue 19, Pages 6740-6747Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ma5015148
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Funding
- Natural Science Foundation of China [21274101]
- National Basic Research Program of China (973 Program) [2012CB825800]
- Natural Science Foundation of Jiangsu Province [BK2011274]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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The synthesis and characterization of pyrrolidinium cation based anion exchange membranes (AEMs) are reported. Pyrrolidinium cations with various N-substituents (including methyl, ethyl, butyl, octyl, isopropyl, 2-hydroxylethyl, benzyl, and cyclohexylmethyl groups) were synthesized and investigated with respect to their chemical stability in alkaline media. The influence of substitutions on alkaline stability of pyrrolidinium cations was investigated by quantitative H-1 nuclear magnetic resonance spectroscopy (NMR) and theoretical approaches. N,N-Ethylmethyl-substituted pyrrolidinium cation ([EMPy](+)) exhibited the highest alkaline stability in this study. The synthesized AEMs based on [EMPy](+) show promising alkaline stability in strongly basic solution. The study of this work should provide a feasible way for improving the alkaline stability of pyrrolidinium cation based AEMs.
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