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题名: Determination of the nonsolvent-polymer interaction parameter X 13 in the casting solutions
作者: Li, ZS;  Jiang, CZ
关键词: thermodynamics ;  interaction parameter ;  intrinsic viscosity
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2000-07-20
卷: 174, 期:1, 页:87-96
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
英文摘要: A new method to determine the nonsolvent-polymer interaction parameter chi(13) in the casting solutions was developed. With the measured intrinsic viscosities of the polymer in the mixed solvents with different concentrations, the nonsolvent-polymer interaction parameter chi(13) could be calculated by the application of the formalism proposed by Campos et al. The values of chi(13) in membrane-forming systems of nonsolvent/N-methyl-2-pyrrolidone (NMP)/polyethersulfone (PES) were obtained by the proposed method. The nonsolvents used were water, I-butanol and diethylene glycol (DegOH). The stronger the nonsolvent, the higher the value of chi(13). In addition, the concentration of the nonsolvent at the binodal curve increased with decreasing chi(13) The binodal curves for these membrane-forming systems predicted from the Flory-Huggins theory with chi(13) Obtained by the proposed method were consistent with measured cloud point curves, which confirmed that the method proposed here was reliable. (C) 2000 Elsevier Science B.V. All rights reserved.
关键词[WOS]: PHASE-SEPARATION ;  MEMBRANE FORMATION ;  EXCLUDED-VOLUME ;  SYSTEMS ;  SOLVENT
语种: 英语
WOS记录号: WOS:000087720300008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138749
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. Determination of the nonsolvent-polymer interaction parameter X 13 in the casting solutions[J]. JOURNAL OF MEMBRANE SCIENCE,2000,174(1):87-96.
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