Transport and structural characteristics of crosslinked poly(ethylene oxide) rubbers

Haiqing Lin; Elizabeth Van Wagner; John S. Swinnea; Benny D. Freeman; Steven J. Pas; Anita J. Hill; Sumod Kalakkunnath; Douglass S. Kalika

doi:10.1016/j.aca.2006.03.068

Transport and structural characteristics of crosslinked poly(ethylene oxide) rubbers

Haiqing Lin
, Elizabeth Van Wagner
, John S. Swinnea
, Benny D. Freeman
, Steven J. Pas
, Anita J. Hill
, Sumod Kalakkunnath
, Douglass S. Kalika

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

Abstract

The removal of CO₂ from mixtures with light gases (H₂ and CH₄) is an important industrial process. Three series of crosslinked poly(ethylene oxide) rubbers were prepared by photopolymerization of prepolymer solutions containing: poly(ethylene glycol) diacrylate (PEGDA) and H₂O, PEGDA and poly(ethylene glycol) methyl ether acrylate (PEGMEA), and PEGDA and poly(ethylene glycol) acrylate. PEGDA/PEGMEA-9 exhibited higher gas permeability than PEGDA/PEGMEA-30 at above the crystal melting temperature due to the higher content of PEGMEA in the former material. XLPEGDA-80, PEGDA/PEGMEA-30, and PEGDA/PEGMEA-9 exhibited very similar CO₂ and CH₄ solubility over the temperature range encompassed by the measurements, and the polymers were amorphous. Increasing PEGMEA content increased the size of the free volume elements, which led to the increased CO₂ permeability and CO₂/H₂ selectivity and decreased CO₂/CH₄ and CO₂/N₂ selectivity, but did little to change the concentration of the free volume elements. As the separations moved from those demanding high diffusivity selectivity (H₂/CH₄) to ones benefiting from high solubility selectivity (CO₂/H₂), the performance of the polar rubbers improved significantly relative to that of conventional glassy polymers.

Original language	English
Pages (from-to)	145-161
Number of pages	17
Journal	Journal of Membrane Science
Volume	276
Issue number	1-2
DOIs	https://doi.org/10.1016/j.aca.2006.03.068
State	Published - May 1 2006

Keywords

Carbon dioxide
Free volume
Membrane
Poly(ethylene oxide)
Separation

ASJC Scopus subject areas

Biochemistry
General Materials Science
Physical and Theoretical Chemistry
Filtration and Separation

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10.1016/j.aca.2006.03.068

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title = "Transport and structural characteristics of crosslinked poly(ethylene oxide) rubbers",

abstract = "The removal of CO2 from mixtures with light gases (H2 and CH4) is an important industrial process. Three series of crosslinked poly(ethylene oxide) rubbers were prepared by photopolymerization of prepolymer solutions containing: poly(ethylene glycol) diacrylate (PEGDA) and H2O, PEGDA and poly(ethylene glycol) methyl ether acrylate (PEGMEA), and PEGDA and poly(ethylene glycol) acrylate. PEGDA/PEGMEA-9 exhibited higher gas permeability than PEGDA/PEGMEA-30 at above the crystal melting temperature due to the higher content of PEGMEA in the former material. XLPEGDA-80, PEGDA/PEGMEA-30, and PEGDA/PEGMEA-9 exhibited very similar CO2 and CH4 solubility over the temperature range encompassed by the measurements, and the polymers were amorphous. Increasing PEGMEA content increased the size of the free volume elements, which led to the increased CO2 permeability and CO2/H2 selectivity and decreased CO2/CH4 and CO2/N2 selectivity, but did little to change the concentration of the free volume elements. As the separations moved from those demanding high diffusivity selectivity (H2/CH4) to ones benefiting from high solubility selectivity (CO2/H2), the performance of the polar rubbers improved significantly relative to that of conventional glassy polymers.",

keywords = "Carbon dioxide, Free volume, Membrane, Poly(ethylene oxide), Separation",

author = "Haiqing Lin and Wagner, \{Elizabeth Van\} and Swinnea, \{John S.\} and Freeman, \{Benny D.\} and Pas, \{Steven J.\} and Hill, \{Anita J.\} and Sumod Kalakkunnath and Kalika, \{Douglass S.\}",

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AU - Lin, Haiqing

AU - Wagner, Elizabeth Van

AU - Swinnea, John S.

AU - Freeman, Benny D.

AU - Pas, Steven J.

AU - Hill, Anita J.

AU - Kalakkunnath, Sumod

AU - Kalika, Douglass S.

PY - 2006/5/1

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N2 - The removal of CO2 from mixtures with light gases (H2 and CH4) is an important industrial process. Three series of crosslinked poly(ethylene oxide) rubbers were prepared by photopolymerization of prepolymer solutions containing: poly(ethylene glycol) diacrylate (PEGDA) and H2O, PEGDA and poly(ethylene glycol) methyl ether acrylate (PEGMEA), and PEGDA and poly(ethylene glycol) acrylate. PEGDA/PEGMEA-9 exhibited higher gas permeability than PEGDA/PEGMEA-30 at above the crystal melting temperature due to the higher content of PEGMEA in the former material. XLPEGDA-80, PEGDA/PEGMEA-30, and PEGDA/PEGMEA-9 exhibited very similar CO2 and CH4 solubility over the temperature range encompassed by the measurements, and the polymers were amorphous. Increasing PEGMEA content increased the size of the free volume elements, which led to the increased CO2 permeability and CO2/H2 selectivity and decreased CO2/CH4 and CO2/N2 selectivity, but did little to change the concentration of the free volume elements. As the separations moved from those demanding high diffusivity selectivity (H2/CH4) to ones benefiting from high solubility selectivity (CO2/H2), the performance of the polar rubbers improved significantly relative to that of conventional glassy polymers.

AB - The removal of CO2 from mixtures with light gases (H2 and CH4) is an important industrial process. Three series of crosslinked poly(ethylene oxide) rubbers were prepared by photopolymerization of prepolymer solutions containing: poly(ethylene glycol) diacrylate (PEGDA) and H2O, PEGDA and poly(ethylene glycol) methyl ether acrylate (PEGMEA), and PEGDA and poly(ethylene glycol) acrylate. PEGDA/PEGMEA-9 exhibited higher gas permeability than PEGDA/PEGMEA-30 at above the crystal melting temperature due to the higher content of PEGMEA in the former material. XLPEGDA-80, PEGDA/PEGMEA-30, and PEGDA/PEGMEA-9 exhibited very similar CO2 and CH4 solubility over the temperature range encompassed by the measurements, and the polymers were amorphous. Increasing PEGMEA content increased the size of the free volume elements, which led to the increased CO2 permeability and CO2/H2 selectivity and decreased CO2/CH4 and CO2/N2 selectivity, but did little to change the concentration of the free volume elements. As the separations moved from those demanding high diffusivity selectivity (H2/CH4) to ones benefiting from high solubility selectivity (CO2/H2), the performance of the polar rubbers improved significantly relative to that of conventional glassy polymers.

KW - Carbon dioxide

KW - Free volume

KW - Membrane

KW - Poly(ethylene oxide)

KW - Separation

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JO - Journal of Membrane Science

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IS - 1-2

ER -

Transport and structural characteristics of crosslinked poly(ethylene oxide) rubbers

Abstract

Keywords

ASJC Scopus subject areas

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