Effects of hydrophilic solvent and oxidation resistance post surface treatment on molecular structure and forward osmosis performance of polyamide thin-film composite (TFC) membranes

	Effects of hydrophilic solvent and oxidation resistance post surface treatment on molecular structure and forward osmosis performance of polyamide thin-film composite (TFC) membranes
	Jia, Qibo 1; Xu, Yangyu 1; Shen, Jianquan 2; Yang, Haijun 2; Zhou, Lu 1
刊名	APPLIED SURFACE SCIENCE
	2015-11-30
卷号	356 页码:1105-1116
关键词	Aromatic polyamide Forward osmosis Hydrophilic solvent Oxidation resistance Electron-withdrawing effect Separation performance
英文摘要	In this article, novel hydrophilic solvents and antioxidants were used to post-treat aromatic polyamide thin-film composite (TFC) hollow fiber forward osmosis (FO) membranes. The effects of trimesoyl chloride (TMC) and oxalic acid on the structure of polyamide skin layer were investigated using ATR-FTIR and XPS analyses. Pure water flux and rejection of salts were detected using 2 M NaCl solution as draw solutions in FO processes. The results demonstrated that hydrophilic solvent N-methyl pyrrolidone (NMP) enhanced the water flux and kept a high salt retention of the TFC FO membrane. TMC and oxalic acid were both found to improve the oxidation resistance properties of the skin layer of TFC membrane because the electron-withdrawing carboxyl groups reduced the activity of polyamide molecular. The effects of the oxalic acid and carbodiimide on the molecular structures and the FO water flux of the polyamide TFC membranes were more marked than those of TMC. The novel TFC FO membrane treated by oxalic acid and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) exhibited a high level of water flux (20.33 L m(-2) h(-1)), and the rates of salt rejection and salt reverse rejection were higher by 50% and 83%, respectively. (C) 2015 Elsevier B.V. All rights reserved.
收录类别	SCI
语种	英语
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/29359]
专题	化学研究所_绿色印刷实验室
作者单位	1.Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Chem, Key Lab Green Printing, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Jia, Qibo,Xu, Yangyu,Shen, Jianquan,et al. Effects of hydrophilic solvent and oxidation resistance post surface treatment on molecular structure and forward osmosis performance of polyamide thin-film composite (TFC) membranes[J]. APPLIED SURFACE SCIENCE,2015,356:1105-1116.
APA	Jia, Qibo,Xu, Yangyu,Shen, Jianquan,Yang, Haijun,&Zhou, Lu.(2015).Effects of hydrophilic solvent and oxidation resistance post surface treatment on molecular structure and forward osmosis performance of polyamide thin-film composite (TFC) membranes.APPLIED SURFACE SCIENCE,356,1105-1116.
MLA	Jia, Qibo,et al."Effects of hydrophilic solvent and oxidation resistance post surface treatment on molecular structure and forward osmosis performance of polyamide thin-film composite (TFC) membranes".APPLIED SURFACE SCIENCE 356(2015):1105-1116.