Dynamically formed inner skin hollow fiber polydimethylsiloxane/polysulfone composite membrane for alcohol permselective pervaporation

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	Dynamically formed inner skin hollow fiber polydimethylsiloxane/polysulfone composite membrane for alcohol permselective pervaporation
	Qin, Zhenping; Ji, Shulan; Wu, Wei; Zhang, Guojun; Guo, Jianxiong; Liu, Zhongzhou
刊名	CHEMICAL ENGINEERING JOURNAL
	2010-04-15
卷号	158 期号:3 页码:558-565
关键词	Alcohol Permselective Membrane Dynamic Cross-flow Coating Method Alternating Casting Solution Direction Inner Skin Hollow Fiber Pervaporation
英文摘要	This work is concerned with the preparation of alcohol permselective inner skin hollow fiber composite membrane using a dynamic cross-flow coating method. The membranes were successfully prepared by dynamically coating polydimethylsiloxane (PDMS) on the inner surface of the polysulfone (PS) hollow fibers under a pressure-driven process. The strategy of alternating PDMS casting solution direction was firstly explored to ensure the formation of a uniform and defect-free selective layer. Subsequently, the effects of coating time, polymer concentration, and crosslink agent concentration on alcohol permselective performance were investigated. The appropriate conditions were: coating time, 60 min; PDMS concentration, 22.8 wt.%; and TEOS concentration, 1.5 wt.%. Under the given conditions, in the case of pervaporation separation of 8 wt.% ethanol water mixture (50 C), the membrane had a separation factor of 6.4 and a permeate flux of 265 g/(m(2) h), respectively. The pervaporation separation behavior of various alcohol/water mixtures with the alcohols being t-butanol, 2-propanol was also investigated. SEM, AFM and contact angle analyses confirmed the formation of selective layer on the inner surface of hollow fibers. Therefore, it indicates that the dynamic cross-now coating technique is a unique approach to the construction of selective layer on porous hollow fiber substrates, which could emerge as a powerful technique for the preparation of a range of separation membranes. (C) 2010 Elsevier B.V. All rights reserved.
WOS记录号	WOS:000276783300025
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/21311]
专题	生态环境研究中心_水污染控制实验室
推荐引用方式 GB/T 7714	Qin, Zhenping,Ji, Shulan,Wu, Wei,et al. Dynamically formed inner skin hollow fiber polydimethylsiloxane/polysulfone composite membrane for alcohol permselective pervaporation[J]. CHEMICAL ENGINEERING JOURNAL,2010,158(3):558-565.
APA	Qin, Zhenping,Ji, Shulan,Wu, Wei,Zhang, Guojun,Guo, Jianxiong,&Liu, Zhongzhou.(2010).Dynamically formed inner skin hollow fiber polydimethylsiloxane/polysulfone composite membrane for alcohol permselective pervaporation.CHEMICAL ENGINEERING JOURNAL,158(3),558-565.
MLA	Qin, Zhenping,et al."Dynamically formed inner skin hollow fiber polydimethylsiloxane/polysulfone composite membrane for alcohol permselective pervaporation".CHEMICAL ENGINEERING JOURNAL 158.3(2010):558-565.