Poly(ether imide) membranes obtained from solution in cosolvent mixtures

Klaus-Victor Georg Peinemann; J. F. Maggioni; Suzana Nunes

doi:10.1016/S0032-3861(97)10067-2

Poly(ether imide) membranes obtained from solution in cosolvent mixtures

Klaus-Victor Georg Peinemann, J. F. Maggioni, Suzana Nunes^*

^*Corresponding author for this work

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

47 Scopus citations

Abstract

Integral asymmetric membranes for gas separation were prepared by casting a poly(ether imide) solution in tetrahydrofuran (THF) and gamma-butyrolactone (GBL) and coagulating in water. As observed by electron microscopy, very thin selective layers (< 0.5 μm) were obtained with high GBL contents or when butanol was also added to the casting solution, resulting therefore in the highest permeability values (up to 467 1 He/m² h bar for membranes prepared from casting solutions with 56 wt% GBL). He/N₂ selectivity values as a function of solvent composition went through a maximum. Maximum values as high as 131 were obtained with equal amounts of THF and GBL in the solvent mixture. The kinetics and mechanism of membrane formation were investigated by light scattering.

Original language	English (US)
Pages (from-to)	3411-3416
Number of pages	6
Journal	Polymer
Volume	39
Issue number	15
DOIs	https://doi.org/10.1016/S0032-3861(97)10067-2
State	Published - Jul 1998

Keywords

Nucleation and growth
Phase separation
Spinodal decomposition

ASJC Scopus subject areas

Materials Chemistry
Polymers and Plastics
Organic Chemistry

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10.1016/S0032-3861(97)10067-2

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title = "Poly(ether imide) membranes obtained from solution in cosolvent mixtures",

abstract = "Integral asymmetric membranes for gas separation were prepared by casting a poly(ether imide) solution in tetrahydrofuran (THF) and gamma-butyrolactone (GBL) and coagulating in water. As observed by electron microscopy, very thin selective layers (< 0.5 μm) were obtained with high GBL contents or when butanol was also added to the casting solution, resulting therefore in the highest permeability values (up to 467 1 He/m2 h bar for membranes prepared from casting solutions with 56 wt% GBL). He/N2 selectivity values as a function of solvent composition went through a maximum. Maximum values as high as 131 were obtained with equal amounts of THF and GBL in the solvent mixture. The kinetics and mechanism of membrane formation were investigated by light scattering.",

keywords = "Nucleation and growth, Phase separation, Spinodal decomposition",

author = "Peinemann, {Klaus-Victor Georg} and Maggioni, {J. F.} and Suzana Nunes",

year = "1998",

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doi = "10.1016/S0032-3861(97)10067-2",

language = "English (US)",

volume = "39",

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journal = "Polymer",

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TY - JOUR

T1 - Poly(ether imide) membranes obtained from solution in cosolvent mixtures

AU - Peinemann, Klaus-Victor Georg

AU - Maggioni, J. F.

AU - Nunes, Suzana

PY - 1998/7

Y1 - 1998/7

N2 - Integral asymmetric membranes for gas separation were prepared by casting a poly(ether imide) solution in tetrahydrofuran (THF) and gamma-butyrolactone (GBL) and coagulating in water. As observed by electron microscopy, very thin selective layers (< 0.5 μm) were obtained with high GBL contents or when butanol was also added to the casting solution, resulting therefore in the highest permeability values (up to 467 1 He/m2 h bar for membranes prepared from casting solutions with 56 wt% GBL). He/N2 selectivity values as a function of solvent composition went through a maximum. Maximum values as high as 131 were obtained with equal amounts of THF and GBL in the solvent mixture. The kinetics and mechanism of membrane formation were investigated by light scattering.

AB - Integral asymmetric membranes for gas separation were prepared by casting a poly(ether imide) solution in tetrahydrofuran (THF) and gamma-butyrolactone (GBL) and coagulating in water. As observed by electron microscopy, very thin selective layers (< 0.5 μm) were obtained with high GBL contents or when butanol was also added to the casting solution, resulting therefore in the highest permeability values (up to 467 1 He/m2 h bar for membranes prepared from casting solutions with 56 wt% GBL). He/N2 selectivity values as a function of solvent composition went through a maximum. Maximum values as high as 131 were obtained with equal amounts of THF and GBL in the solvent mixture. The kinetics and mechanism of membrane formation were investigated by light scattering.

KW - Nucleation and growth

KW - Phase separation

KW - Spinodal decomposition

UR - http://www.scopus.com/inward/record.url?scp=0032128388&partnerID=8YFLogxK

U2 - 10.1016/S0032-3861(97)10067-2

DO - 10.1016/S0032-3861(97)10067-2

M3 - Article

AN - SCOPUS:0032128388

SN - 0032-3861

VL - 39

SP - 3411

EP - 3416

JO - Polymer

JF - Polymer

IS - 15

ER -

Poly(ether imide) membranes obtained from solution in cosolvent mixtures

Abstract

Keywords

ASJC Scopus subject areas

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