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题名: Investigation into the rheological properties of PES/NMP/nonsolvent membrane-forming systems
作者: Li, ZS;  Jiang, CZ
关键词: polyethersulfone ;  membrane-forming systems ;  rheological properties ;  solvent quality
刊名: JOURNAL OF APPLIED POLYMER SCIENCE
发表日期: 2001-10-10
卷: 82, 期:2, 页:283-291
收录类别: SCI
文章类型: Article
部门归属: 18102
项目归属: 1812
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Polymer Science
研究领域[WOS]: Polymer Science
英文摘要: From the perspective of a polymer solution, the rheological properties of the popular polyethersulfone (PES)/N-methyl-2-pyrrolidone (NMP)/nonsolvent (NS) membrane-forming system were investigated thoroughly with a controlled stress rheometer (HAAKE RS75, Germany). The scope of the study included measurements of the controlled-stress flow curve, creep recovery, and dynamic oscillation. H2O, 1-butanol, ethylene glycol, and diethylene glycol were used as NS additives. The effects of the polymer concentration and the quality of the solvent mixture, as characterized by the approaching ratio, on the rheological behavior of the dopes were studied. Up to 38 wt % PES and extremely adjacent to the phase separation (i.e., the approaching ratio of the dope was 0.95), the viscous property dominated all the dopes, which behaved as Newtonian fluids. Moreover, all the membrane-forming dopes investigated were in the crossover regime in the semidilute region, in which the chains were overlapping but unentangled. (C) 2001 John Wiley & Sons, Inc.
关键词[WOS]: PHASE-INVERSION PROCESS ;  POLYMER-SOLUTIONS ;  IMMERSION-PRECIPITATION ;  SEPARATION PERFORMANCE ;  MASS-TRANSFER ;  PRESSURE-DEPENDENCE ;  FORMATION MECHANISM ;  HOLLOW FIBERS ;  SOLVENT ;  VISCOSITY
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000170382500004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/84671
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.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Li, ZS,Jiang, CZ. Investigation into the rheological properties of PES/NMP/nonsolvent membrane-forming systems[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2001,82(2):283-291.
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