Permeation properties of CO<sub>2</sub> and CH<sub>4</sub> in asymmetric polyethersulfone/polyesterurethane and polyethersulfone/polyetherurethane blend membranes

Shadi Hasanajili; Masoud Latifzadeh; Mahmoud Bahmani

doi:10.1016/j.cjche.2017.07.011

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Permeation properties of CO₂ and CH₄ in asymmetric polyethersulfone/polyesterurethane and polyethersulfone/polyetherurethane blend membranes

第25届中国过程控制会议专栏 | Updated：2026-01-06

- Permeation properties of CO₂ and CH₄ in asymmetric polyethersulfone/polyesterurethane and polyethersulfone/polyetherurethane blend membranes
- Chinese Journal of Chemical Engineering Vol. 25, Issue 12, Pages: 1750-1759(2017)
- Affiliations：
  
  Chemical and Petroleum Engineering School, Shiraz University, 4 Shiraz,Iran,71348-5115
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.07.011
  CLC：
- Published：2017
- Accepted：
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摘要

Abstract

The transport performances of carbon dioxide and methane were studied in polyethersulfone

polyethersulfone/ polyeterurethane (PES-ETPU) and polyethersulfone/polyestherurethane (PES-ESPU) blend membranes separately with different compositions. The variations in the structural characteristics of PES membrane after incorporation of ESPU and ETPU were investigated by different techniques. Additionally

the effect of pressure and composition on the permeance of CO

and ideal selectivity of CO

/CH

were checked on the membranes. The results revealed that themorphology of the blendmembraneswas affected by two opposite factors: thermodynamic enhancement and kinetic hindrance. The membranes with denser sponge layers were formed at lower ratio of PU/PES

whilemore porous structure with enlarged macrovoids membraneswere observed at higher PU content. The results indicated that adding PU to PES membrane

caused permeance improvement of the gases with nearly no change and/or reduction in ideal selectivity of CO

/CH

.Moreover

PES-ETPU membranes showed higher permeability and less CO

/CH

selectivity in comparison with PES-ESPU samples. For PES-ESPU membrane containing 1.5% ESPU

permeance at 10 bar was improved up to 20% with almost no change in CO

/CH

selectivity with respect to PES. Finally

response surface methodology was used to evaluate the effects of the operating parameters on the permeance and ideal selectivity.

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Permeation properties of CO2 and CH4 in asymmetric polyethersulfone/polyesterurethane and polyethersulfone/polyetherurethane blend membranes

DOI：10.1016/j.cjche.2017.07.011

摘要

Abstract

关键词

Keywords

references

Permeation properties of CO₂ and CH₄ in asymmetric polyethersulfone/polyesterurethane and polyethersulfone/polyetherurethane blend membranes