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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
KeywordPoly(Ether Sulfones) Membrane Gelation Time Elongation Method
Source PublicationJOURNAL OF MEMBRANE SCIENCE
2006-04-20
DOI10.1016/j.memsci.2005.08.019
Volume275Issue:1-2Pages:46-51
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS SubjectEngineering, Chemical ; Polymer Science
WOS Research AreaEngineering ; Polymer Science
WOS KeywordASYMMETRIC POLYSULFONE MEMBRANES ; PHASE-SEPARATION PHENOMENA ; BATH COAGULATION METHOD ; THERMOREVERSIBLE GELATION ; IMMERSION PRECIPITATION ; POLYMER-SOLUTIONS ; THERMODYNAMIC THEORY ; ATACTIC POLYSTYRENE ; MASS-TRANSFER ; WATER
AbstractIn 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.
Language英语
WOS IDWOS:000236455200007
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/140053
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
Recommended Citation
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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