Phase behavior and morphological studies of polyimide/PVP/solvent/water systems by phase inversion

被引：56
作者：
Kim, JH
Min, BR
Park, HC
Won, J
Kang, YS
机构：
[1] Korea Inst Sci & Technol, Ctr Facilitated Transport Membranes, Seoul 130650, South Korea
[2] Yonsei Univ, Dept Chem Engn, Seoul 120749, South Korea
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2001年 / 81卷 / 14期
关键词：
polyimide (PI); PVP; phase inversion; macrovoid; phase separation;
D O I：
10.1002/app.1804
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The solubility gaps for poly(vinyl pyrrolidone) (PVP) in four polyimide solutions (NMP, DMF, GEL, DMSO) were determined by cloud point measurement and correlated with chi (PI/Solvent) and Delta delta (PVP/Solvent). Membranes prepared with NMP and DMF systems showed a tendency of suppressing fingerlike structure with addition of PVP. On the other hand, membranes prepared with GEL and DMSO systems showed an inclination toward inducing macrovoid formation. These effects of PVP on the membrane morphology were explained by means of miscibility gap, viscosity of the polymer solution, polymer-polymer phase separation, and overall porosity. (C) 2001 John Wiley & Sons, Inc.
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收藏
页码：3481 / 3488
页数：8
相关论文
共 23 条
[1]   EQUILIBRIUM THERMODYNAMICS OF A QUATERNARY MEMBRANE-FORMING SYSTEM WITH 2 POLYMERS .2. EXPERIMENTS [J].
BOOM, RM ;
REINDERS, HW ;
ROLEVINK, HHW ;
VANDENBOOMGAARD, T ;
SMOLDERS, CA .
MACROMOLECULES, 1994, 27 (08) :2041-2044
[2]   MICROSTRUCTURES IN PHASE INVERSION MEMBRANES .2. THE ROLE OF A POLYMERIC ADDITIVE [J].
BOOM, RM ;
WIENK, IM ;
VANDENBOOMGAARD, T ;
SMOLDERS, CA .
JOURNAL OF MEMBRANE SCIENCE, 1992, 73 (2-3) :277-292
[3]   MASS-TRANSFER AND THERMODYNAMICS DURING IMMERSION PRECIPITATION FOR A 2-POLYMER SYSTEM - EVALUATION WITH THE SYSTEM PES-PVP-NMP-WATER [J].
BOOM, RM ;
VANDENBOOMGAARD, T ;
SMOLDERS, CA .
JOURNAL OF MEMBRANE SCIENCE, 1994, 90 (03) :231-249
[4]   A COMPARISON OF METHODS FOR THE ESTIMATION OF POLYMER MONOMER INTERACTION PARAMETERS - THE POLYSTYRENE N-BUTYL METHACRYLATE SYSTEM [J].
DURANT, YG ;
SUNDBERG, DC ;
GUILLOT, J .
JOURNAL OF APPLIED POLYMER SCIENCE, 1994, 52 (12) :1823-1832
[5]   MECHANISM OF MEMBRANE FORMATION .6. CONVECTIVE FLOWS AND LARGE VOID FORMATION DURING MEMBRANE PRECIPITATION [J].
FROMMER, MA ;
MESSALEM, RM .
INDUSTRIAL & ENGINEERING CHEMISTRY PRODUCT RESEARCH AND DEVELOPMENT, 1973, 12 (04) :328-333
[6]   ON THE THERMODYNAMIC TREATMENT OF POLY(VINYLIDENE FLUORIDE) POLYSTYRENE BLEND UNDER LIQUID-LIQUID PHASE-SEPARATION CONDITIONS [J].
GOMEZ, CM ;
VERDEJO, E ;
FIGUERUELO, JE ;
CAMPOS, A ;
SORIA, V .
POLYMER, 1995, 36 (07) :1487-1498
[7]   STUDIES ON SOLVENT EVAPORATION AND POLYMER PRECIPITATION PERTINENT TO THE FORMATION OF ASYMMETRIC POLYETHERIMIDE MEMBRANES [J].
HUANG, RYM ;
FENG, XS .
JOURNAL OF APPLIED POLYMER SCIENCE, 1995, 57 (05) :613-621
[8]  
Kang YS, 1997, KOREA POLYM J, V5, P166
[9]  
KANG YS, 1991, J MEMBRANE SCI, V60, P219
[10]  
KANG YS, 1998, Patent No. 5795920
123