Phase-inversion poly(ether imide) membranes prepared from water-miscible/immiscible mixture solvents

Jyh Jeng Shieh; Tai Shung Chung

doi:10.1021/ie9807912

Phase-inversion poly(ether imide) membranes prepared from water-miscible/immiscible mixture solvents

Jyh Jeng Shieh, Tai Shung Chung^*

^*Corresponding author for this work

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

16 Scopus citations

Abstract

By using water-miscible and water-immiscible solvents (N-methyl-2-pyrrolidone and methlyene chloride (MC)) in the casting solution to prepare poly(ether imide) (PEI) asymmetric membranes via a phase-inversion process, we have studied the flat membrane formation, membrane morphology, and gas separation performance in terms of PEI content, MC content, and standing time. In such a system, the immiscibility of MC with water plays a very important role in determining the final membrane morphology and performance. The influence of methylene chloride was shown in two aspects: (1) change of phase-inversion course and mechanisms; (2) post membrane structure change due to the interaction between PEI and methylene chloride. The silicone-coated PEI membranes exhibited a good membrane performance with O₂ permeance of (1.3-9.3) × 10^-6 cm³(STP)/cm²·s·cmHg and O₂/N₂ selectivity of 5.2-6.4. It was found, from the gas permeation and membrane morphology studies, that the separation was mainly attributed to the cellular structures (closed cells) beneath the membrane surface skin.

Original language	English (US)
Pages (from-to)	2650-2658
Number of pages	9
Journal	Industrial and Engineering Chemistry Research
Volume	38
Issue number	7
DOIs	https://doi.org/10.1021/ie9807912
State	Published - 1999
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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title = "Phase-inversion poly(ether imide) membranes prepared from water-miscible/immiscible mixture solvents",

abstract = "By using water-miscible and water-immiscible solvents (N-methyl-2-pyrrolidone and methlyene chloride (MC)) in the casting solution to prepare poly(ether imide) (PEI) asymmetric membranes via a phase-inversion process, we have studied the flat membrane formation, membrane morphology, and gas separation performance in terms of PEI content, MC content, and standing time. In such a system, the immiscibility of MC with water plays a very important role in determining the final membrane morphology and performance. The influence of methylene chloride was shown in two aspects: (1) change of phase-inversion course and mechanisms; (2) post membrane structure change due to the interaction between PEI and methylene chloride. The silicone-coated PEI membranes exhibited a good membrane performance with O2 permeance of (1.3-9.3) × 10-6 cm3(STP)/cm2·s·cmHg and O2/N2 selectivity of 5.2-6.4. It was found, from the gas permeation and membrane morphology studies, that the separation was mainly attributed to the cellular structures (closed cells) beneath the membrane surface skin.",

author = "Shieh, {Jyh Jeng} and Chung, {Tai Shung}",

year = "1999",

doi = "10.1021/ie9807912",

language = "English (US)",

volume = "38",

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journal = "Industrial and Engineering Chemistry Research",

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publisher = "American Chemical Society",

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T1 - Phase-inversion poly(ether imide) membranes prepared from water-miscible/immiscible mixture solvents

AU - Shieh, Jyh Jeng

AU - Chung, Tai Shung

PY - 1999

Y1 - 1999

N2 - By using water-miscible and water-immiscible solvents (N-methyl-2-pyrrolidone and methlyene chloride (MC)) in the casting solution to prepare poly(ether imide) (PEI) asymmetric membranes via a phase-inversion process, we have studied the flat membrane formation, membrane morphology, and gas separation performance in terms of PEI content, MC content, and standing time. In such a system, the immiscibility of MC with water plays a very important role in determining the final membrane morphology and performance. The influence of methylene chloride was shown in two aspects: (1) change of phase-inversion course and mechanisms; (2) post membrane structure change due to the interaction between PEI and methylene chloride. The silicone-coated PEI membranes exhibited a good membrane performance with O2 permeance of (1.3-9.3) × 10-6 cm3(STP)/cm2·s·cmHg and O2/N2 selectivity of 5.2-6.4. It was found, from the gas permeation and membrane morphology studies, that the separation was mainly attributed to the cellular structures (closed cells) beneath the membrane surface skin.

AB - By using water-miscible and water-immiscible solvents (N-methyl-2-pyrrolidone and methlyene chloride (MC)) in the casting solution to prepare poly(ether imide) (PEI) asymmetric membranes via a phase-inversion process, we have studied the flat membrane formation, membrane morphology, and gas separation performance in terms of PEI content, MC content, and standing time. In such a system, the immiscibility of MC with water plays a very important role in determining the final membrane morphology and performance. The influence of methylene chloride was shown in two aspects: (1) change of phase-inversion course and mechanisms; (2) post membrane structure change due to the interaction between PEI and methylene chloride. The silicone-coated PEI membranes exhibited a good membrane performance with O2 permeance of (1.3-9.3) × 10-6 cm3(STP)/cm2·s·cmHg and O2/N2 selectivity of 5.2-6.4. It was found, from the gas permeation and membrane morphology studies, that the separation was mainly attributed to the cellular structures (closed cells) beneath the membrane surface skin.

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U2 - 10.1021/ie9807912

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JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 7

ER -

Phase-inversion poly(ether imide) membranes prepared from water-miscible/immiscible mixture solvents

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