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题名: Dimensionally stable hexamethylenetetramine functionalized polysulfone anion exchange membranes
作者: Chen, Wanting1;  Hu, Mengmeng1;  Wang, Haochen2;  Wu, Xuemei1;  Gong, Xue1;  Yan, Xiaoming1, 3;  Zhen, Dongxing1;  He, Gaohong1, 3
刊名: JOURNAL OF MATERIALS CHEMISTRY A
发表日期: 2017-08-07
DOI: 10.1039/c7ta01218g
卷: 5, 期:29, 页:15038-15047
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Energy & Fuels ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Materials Science
英文摘要: A novel alkaline group, hexamethylenetetramine (HMTA) with four tertiary amine groups and beta-hydrogenabsent structure, has been employed as mono-quaternization reagent to prepare HMTA mono-quaternized polysulfone anion exchange membranes (PSF-QuOH AEMs). Analyzed by molecular dynamics simulations, mono-quaternized HMTA shows a superior aggregating ability by strong electrostatic interaction with hydroxide to suppress water swelling even at high IECs. In particular, the PSF-QuOH membrane with a high IEC of 2.23 mmol g(-1) exhibits a low swelling ratio of 21% even at 60 degrees C. The resulting high concentration of cationic groups and the interactions between multiple hydrogen atoms in HMTA and hydroxide/water are helpful to induce the formation of the continuous and efficient hydrogen-bond networks, promoting ionic transport. High hydroxide conductivity of 35 mS cm(-1) is achieved at 20 degrees C. Excellent swelling resistance also benefits the mechanical and chemical stabilities of the PSF-QuOH membranes. A considerable mechanical strength of 17.7 MPa is observed in the fully hydrated membrane. The hydroxide conductivity is stable at around 86% of the initial value after 1 M KOH immersion at 60 degrees C for 168 h.
关键词[WOS]: FUEL-CELL APPLICATIONS ;  ALKALINE POLYMER ELECTROLYTE ;  MOLECULAR-DYNAMICS SIMULATION ;  POLY(ETHER ETHER KETONE) ;  POLY(VINYLBENZYL CHLORIDE) ;  PROTON CONDUCTIVITY ;  HYDROXIDE ;  QUATERNARY ;  STABILITY ;  CATIONS
语种: 英语
WOS记录号: WOS:000406187800011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151913
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Univ Technol, Sch Chem Engn, Res & Dev Ctr Membrane Sci & Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
3.Dalian Univ Technol, Sch Petr & Chem Engn, Panjin 124221, Peoples R China

Recommended Citation:
Chen, Wanting,Hu, Mengmeng,Wang, Haochen,et al. Dimensionally stable hexamethylenetetramine functionalized polysulfone anion exchange membranes[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(29):15038-15047.
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