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题名: Morphology transition of asymmetric flat sheet and thickness-gradient membranes by wet phase-inversion process
作者: Ren, Jizhong1;  Zhou, Jingqian1;  Deng, Maicun1
关键词: Morphology transition ;  Flat sheet membrane ;  Thickness-gradient membrane ;  Critical structure-transition thickness
刊名: DESALINATION
发表日期: 2010-04-01
DOI: 10.1016/j.desal.2009.12.001
卷: 253, 期:1-3, 页:1-8
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Engineering, Chemical ;  Water Resources
研究领域[WOS]: Engineering ;  Water Resources
英文摘要: In this paper. asymmetric membranes are prepared with P84 (BTDA-TDI/MDI co-polyimide)/N-methyl-2-pyrrolidone (NMP)/-gamma-butyrolactone (GBL) and polyetherimide (PEI)/NMP/GBL. casting solutions by wet phase-inversion process And the transition of membrane morphology is investigated with different flat sheet and thickness-gradient membranes. For the thickness-gradient membranes, with the increase of membrane thickness, the membrane morphology changes from sponge-like to finger-like structure at the critical structure-transition thickness L(c). Meanwhile, the general sponge-like structure thickness L(gs) underneath the membrane surface is almost a constant. And the morphology of thickness-gradient membranes IS Illustrated with three different thickness regions.
关键词[WOS]: CELLULOSE-ACETATE MEMBRANES ;  SYSTEM ;  SOLVENT ;  SEPARATION ;  PRECIPITATION ;  PARAMETERS ;  MACROVOIDS ;  NONSOLVENT ;  MECHANISM ;  EVOLUTION
语种: 英语
WOS记录号: WOS:000275589400001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141671
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:
Ren, Jizhong,Zhou, Jingqian,Deng, Maicun. Morphology transition of asymmetric flat sheet and thickness-gradient membranes by wet phase-inversion process[J]. DESALINATION,2010,253(1-3):1-8.
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