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题名: Morphology evolution of thickness-gradient membranes prepared by wet phase-inversion process
作者: Zhou, Jingqian1;  Ren, Jizhong1;  Lin, Li1;  Deng, Maicun1
关键词: Thickness-gradient membrane ;  Wet phase-inversion ;  Membrane morphology ;  Membrane thickness
刊名: SEPARATION AND PURIFICATION TECHNOLOGY
发表日期: 2008-10-22
DOI: 10.1016/j.seppur.2008.05.019
卷: 63, 期:2, 页:484-486
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: In this paper, the thickness-gradient membranes defined as flat sheet membranes with an increasing membrane thickness were prepared using polyetherimide (PEI)/N-methyl-2-pyrrolidone (NMP)/gamma-butyrolactone (GBL) casting solutions with the same polymer concentration (15 wt% PEI) and two different ratio of NMP/GBL by wet phase-inversion process. With an increase in membrane thickness, the membrane morphology evolution from sponge-like to finger-like structure was investigated clearly, and it was described with the critical structure-transition thickness (L-c) and general sponge-like structure thickness (L-gs). The morphology evolution of thickness-gradient membranes was illustrated with three different thickness regions. (C) 2008 Elsevier B.V. All rights reserved.
关键词[WOS]: ASYMMETRIC MEMBRANES ;  MACROVOIDS
语种: 英语
WOS记录号: WOS:000260702600032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140856
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 Inst Chem Phys, Natl Engn Res Ctr Membrane Technol, Dalian 116023, Peoples R China

Recommended Citation:
Zhou, Jingqian,Ren, Jizhong,Lin, Li,et al. Morphology evolution of thickness-gradient membranes prepared by wet phase-inversion process[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2008,63(2):484-486.
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