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Alkaline stability of ether bond free fluorene-based anion exchange polymer containing cycloaliphatic quaternary ammonium groups
被引:17
|作者:
Salma, Umme
[1
,2
]
Nagao, Yuki
[1
]
机构:
[1] Japan Adv Inst Sci & Technol, Sch Mat Sci, 1-1 Asahidai, Nomi, Ishikawa 9231292, Japan
[2] Mawlana Bhashani Sci & Technol Univ, Dept Chem, Santosh 1902, Tangail, Bangladesh
关键词:
Anion exchange membrane;
Alkaline stability;
Polyfluorene;
Quaternary ammonium;
Degradation;
FUEL-CELLS;
ELECTROLYTE MEMBRANES;
HYDROXIDE;
CATIONS;
PERFORMANCE;
SULFONE)S;
POLY(PHENYLENE);
COPOLYMERS;
MORPHOLOGY;
TRANSPORT;
D O I:
10.1016/j.polymdegradstab.2020.109299
中图分类号:
O63 [高分子化学(高聚物)];
学科分类号:
070305 ;
080501 ;
081704 ;
摘要:
Quaternary piperidinium cation was incorporated into aryl-ether-bond-free fluorene-based polymer by flexible alkyl side chains to synthesize a highly conductive and chemically stable anion exchange membrane (AEM). The membrane of the OH- form shows good solubility in dimethyl sulfoxide and methanol but not soluble in water. In a fully hydrated state, the OH- conductivity reached 58 mS cm(-1) at 80 degrees C. The results of H-1 NMR spectra revealed that the alkyl-substituted N-methylpiperidinium cationic group was excellent alkaline stable as only 13% cationic group was degraded after 168 h storage in 1 M NaOH solution at 80 degrees C. (c) 2020 Elsevier Ltd. All rights reserved.
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页数:9
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