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Preliminary studies on the gelation time of poly(ether sulfones) membrane-forming system with an elongation method
Wang, LJ; Li, ZS; Ren, JZ; Li, SG; Jiang, CZ
关键词Poly(Ether Sulfones) Membrane Gelation Time Elongation Method
刊名JOURNAL OF MEMBRANE SCIENCE
2006-04-20
DOI10.1016/j.memsci.2005.08.019
275期:1-2页:46-51
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Technology ; Physical Sciences
类目[WOS]Engineering, Chemical ; Polymer Science
研究领域[WOS]Engineering ; Polymer Science
关键词[WOS]ASYMMETRIC POLYSULFONE MEMBRANES ; PHASE-SEPARATION PHENOMENA ; BATH COAGULATION METHOD ; THERMOREVERSIBLE GELATION ; IMMERSION PRECIPITATION ; POLYMER-SOLUTIONS ; THERMODYNAMIC THEORY ; ATACTIC POLYSTYRENE ; MASS-TRANSFER ; WATER
英文摘要In this study, a new method of elongation was developed to measure the gelation time, a macroscopic time scale describing the gelation process during membrane formation. The gelation times of poly(ether suffones) (PES)/N-methyl-2-pyrrolidone (NMP)/nonsolvent membrane-forming systems were measured quantitatively for the first time. The effect of polymer concentration, approaching ratio and approaching coagulation ratio on the gelation time were systematically investigated. The results showed that the gelation time decreased with increasing approaching ratio, while increased with increasing polymer concentration in the casting solution and approaching coagulation ratio. For the membrane-forming systems studied herein, regardless of an instantaneous demixing system or a delayed demixing system, the gelation time was much longer than the delay time, and the gelation time changed in a similar pattern as the delay time. More efforts should be made to understand the role of gelation time in the process of membrane formation. (c) 2005 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000236455200007
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被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140053
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
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GB/T 7714
Wang, LJ,Li, ZS,Ren, JZ,et al. Preliminary studies on the gelation time of poly(ether sulfones) membrane-forming system with an elongation method[J]. JOURNAL OF MEMBRANE SCIENCE,2006,275(1-2):46-51.
APA Wang, LJ,Li, ZS,Ren, JZ,Li, SG,&Jiang, CZ.(2006).Preliminary studies on the gelation time of poly(ether sulfones) membrane-forming system with an elongation method.JOURNAL OF MEMBRANE SCIENCE,275(1-2),46-51.
MLA Wang, LJ,et al."Preliminary studies on the gelation time of poly(ether sulfones) membrane-forming system with an elongation method".JOURNAL OF MEMBRANE SCIENCE 275.1-2(2006):46-51.
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