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

Jong Hak Kim; Byoung Ryul Min; Hyun Chae Park; Jongok Won; Yong Soo Kang

doi:10.1002/app.1804

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

Jong Hak Kim, Byoung Ryul Min, Hyun Chae Park, Jongok Won, Yong Soo Kang

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

58 Citations (Scopus)

Abstract

The solubility gaps for poly(vinyl pyrrolidone) (PVP) in four polyimide solutions (NMP, DMF, GBL, DMSO) were determined by cloud point measurement and correlated with χ_PI/Solvent and Δδ_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 GBL 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.

Original language	English
Pages (from-to)	3481-3488
Number of pages	8
Journal	Journal of Applied Polymer Science
Volume	81
Issue number	14
DOIs	https://doi.org/10.1002/app.1804
Publication status	Published - 2001 Sept 29

All Science Journal Classification (ASJC) codes

Chemistry(all)
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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10.1002/app.1804

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abstract = "The solubility gaps for poly(vinyl pyrrolidone) (PVP) in four polyimide solutions (NMP, DMF, GBL, DMSO) were determined by cloud point measurement and correlated with χPI/Solvent and ΔδPVP/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 GBL 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.",

author = "Kim, {Jong Hak} and Min, {Byoung Ryul} and Park, {Hyun Chae} and Jongok Won and Kang, {Yong Soo}",

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AU - Kim, Jong Hak

AU - Min, Byoung Ryul

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AU - Won, Jongok

AU - Kang, Yong Soo

PY - 2001/9/29

Y1 - 2001/9/29

N2 - The solubility gaps for poly(vinyl pyrrolidone) (PVP) in four polyimide solutions (NMP, DMF, GBL, DMSO) were determined by cloud point measurement and correlated with χPI/Solvent and ΔδPVP/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 GBL 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.

AB - The solubility gaps for poly(vinyl pyrrolidone) (PVP) in four polyimide solutions (NMP, DMF, GBL, DMSO) were determined by cloud point measurement and correlated with χPI/Solvent and ΔδPVP/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 GBL 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.

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

Abstract

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