Dimensionally stable hexamethylenetetramine functionalized polysulfone anion exchange membranes
发表时间：2019-03-12
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- 论文类型：
- 期刊论文
- 第一作者：
- Chen, Wanting
- 通讯作者：
- Wu, XM; He, GH (reprint author), Dalian Univ Technol, Sch Chem Engn, Res & Dev Ctr Membrane Sci & Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China.; He, GH (reprint author), Dalian Univ Technol, Sch Petr & Chem Engn, Panjin 124221, Peoples R China.
- 合写作者：
- Hu, Mengmeng,Wang, Haochen,Wu, Xuemei,Gong, Xue,Yan, Xiaoming,Zhen, Dongxing,He, Gaohong
- 发表时间：
- 2017-08-07
- 发表刊物：
- JOURNAL OF MATERIALS CHEMISTRY A
- 收录刊物：
- SCIE、EI、Scopus
- 文献类型：
- J
- 卷号：
- 5
- 期号：
- 29
- 页面范围：
- 15038-15047
- ISSN号：
- 2050-7488
- 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.
- 是否译文：
- 否
