Tailor-made polymeric membranes based on segmented block copolymers for CO2 separation

Anja Car; Chrtomir Stropnik; Wilfredo Yave; Klaus Viktor Peinemann

doi:10.1002/adfm.200800436

Tailor-made polymeric membranes based on segmented block copolymers for CO₂ separation

Anja Car^*, Chrtomir Stropnik, Wilfredo Yave, Klaus Viktor Peinemann

^*Corresponding author for this work

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

227 Scopus citations

Abstract

This paper reports the design of a tailor made polymeric membrane by using poly(ethylene oxide)-poly(butylene terephthalate) (PEO-PBT) multi-block copolymers. Their properties are controlled by the fraction of the PEO phase and its molecular weight. To explain the effect of structural changes in copolymer membranes, transport properties of four gases (CO₂, H₂, N₂, and CH₄) are discussed. After characterization, the two best copolymers are selected in order to prepare tailor made blends by adding poly(ethylene glycol) (PEG). The best selected copolymer that contained 55 wt. % of 4000 g mol^-1 PEO produced a blend with high CO ₂ permeability (∼190 barrer), which is twice the permeability of the pure copolymer. At the same time, an enhancement of CO₂/H ₂ selectivity is observed (∼13). These results suggest that the morphology of PEO-PBT can be well controlled by the addition of low-molecular-weight PEG, and consequently the gas transport properties can be tuned.

Original language	English (US)
Pages (from-to)	2815-2823
Number of pages	9
Journal	Advanced Functional Materials
Volume	18
Issue number	18
DOIs	https://doi.org/10.1002/adfm.200800436
State	Published - Sep 23 2008
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1002/adfm.200800436

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title = "Tailor-made polymeric membranes based on segmented block copolymers for CO2 separation",

abstract = "This paper reports the design of a tailor made polymeric membrane by using poly(ethylene oxide)-poly(butylene terephthalate) (PEO-PBT) multi-block copolymers. Their properties are controlled by the fraction of the PEO phase and its molecular weight. To explain the effect of structural changes in copolymer membranes, transport properties of four gases (CO2, H2, N2, and CH4) are discussed. After characterization, the two best copolymers are selected in order to prepare tailor made blends by adding poly(ethylene glycol) (PEG). The best selected copolymer that contained 55 wt. % of 4000 g mol-1 PEO produced a blend with high CO 2 permeability (∼190 barrer), which is twice the permeability of the pure copolymer. At the same time, an enhancement of CO2/H 2 selectivity is observed (∼13). These results suggest that the morphology of PEO-PBT can be well controlled by the addition of low-molecular-weight PEG, and consequently the gas transport properties can be tuned.",

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AU - Car, Anja

AU - Stropnik, Chrtomir

AU - Yave, Wilfredo

AU - Peinemann, Klaus Viktor

PY - 2008/9/23

Y1 - 2008/9/23

N2 - This paper reports the design of a tailor made polymeric membrane by using poly(ethylene oxide)-poly(butylene terephthalate) (PEO-PBT) multi-block copolymers. Their properties are controlled by the fraction of the PEO phase and its molecular weight. To explain the effect of structural changes in copolymer membranes, transport properties of four gases (CO2, H2, N2, and CH4) are discussed. After characterization, the two best copolymers are selected in order to prepare tailor made blends by adding poly(ethylene glycol) (PEG). The best selected copolymer that contained 55 wt. % of 4000 g mol-1 PEO produced a blend with high CO 2 permeability (∼190 barrer), which is twice the permeability of the pure copolymer. At the same time, an enhancement of CO2/H 2 selectivity is observed (∼13). These results suggest that the morphology of PEO-PBT can be well controlled by the addition of low-molecular-weight PEG, and consequently the gas transport properties can be tuned.

AB - This paper reports the design of a tailor made polymeric membrane by using poly(ethylene oxide)-poly(butylene terephthalate) (PEO-PBT) multi-block copolymers. Their properties are controlled by the fraction of the PEO phase and its molecular weight. To explain the effect of structural changes in copolymer membranes, transport properties of four gases (CO2, H2, N2, and CH4) are discussed. After characterization, the two best copolymers are selected in order to prepare tailor made blends by adding poly(ethylene glycol) (PEG). The best selected copolymer that contained 55 wt. % of 4000 g mol-1 PEO produced a blend with high CO 2 permeability (∼190 barrer), which is twice the permeability of the pure copolymer. At the same time, an enhancement of CO2/H 2 selectivity is observed (∼13). These results suggest that the morphology of PEO-PBT can be well controlled by the addition of low-molecular-weight PEG, and consequently the gas transport properties can be tuned.

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Tailor-made polymeric membranes based on segmented block copolymers for CO₂ separation

Abstract

ASJC Scopus subject areas

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