Blends of Fluorinated Additives with Highly Selective Thin-Film Composite Membranes to Increase CO<inf>2</inf> Permeability for CO<inf>2</inf>/N<inf>2</inf> Gas Separation Applications

Scofield, JMP; Gurr, PA; Kim, J; Fu, Q; Kentish, SE; Qiao, GG

Blends of Fluorinated Additives with Highly Selective Thin-Film Composite Membranes to Increase CO<inf>2</inf> Permeability for CO<inf>2</inf>/N<inf>2</inf> Gas Separation Applications

Scofield, JMP Gurr, PA Kim, J Fu, Q

Kentish, SE Qiao, GG

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Publisher:: AMER CHEMICAL SOC
Publication Type:: Journal Article
Citation:: Industrial and Engineering Chemistry Research, 2016, 55, (30), pp. 8364-8372
Issue Date:: 2016-08-03

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Field	Value	Language
dc.contributor.author	Scofield, JMP
dc.contributor.author	Gurr, PA
dc.contributor.author	Kim, J
dc.contributor.author	Fu, Q https://orcid.org/0000-0002-4012-330X
dc.contributor.author	Kentish, SE
dc.contributor.author	Qiao, GG
dc.date.accessioned	2022-08-16T02:22:35Z
dc.date.available	2022-08-16T02:22:35Z
dc.date.issued	2016-08-03
dc.identifier.citation	Industrial and Engineering Chemistry Research, 2016, 55, (30), pp. 8364-8372
dc.identifier.issn	0888-5885
dc.identifier.issn	1520-5045
dc.identifier.uri	http://hdl.handle.net/10453/160297
dc.description.abstract	A highly permeable poly(ethylene glycol-b-pentafluoropropyl acrylate) diblock copolymer additive is blended with the highly selective PEBAX 1657 block copolymer and spin coated onto cross-linked poly(dimethylsiloxane) gutter layers coated onto porous polyacrylonitrile supports for use in CO2/N2 gas separation applications. Blended films containing up to 70 wt % of the fluorinated additive are successfully formed and characterized by scanning electron microscopy, revealing an average film thickness of 200 nm. Addition of the fluorinated additive results in significant enhancements to CO2 permeance, in the range of 916 to 1538 GPU while maintaining a CO2/N2 selectivity between 21 and 33 when blended at 60-65 wt %. The impact of temperature and pressure on membrane performance was determined at temperatures of 25-55 °C and pressures of 100-500 kPa. Theoretical calculations of the performance without the gutter layer resistance demonstrate that the corresponding active membrane layer could achieve CO2 permeances between 1128 and 2246 GPU and permeabilities between 226 and 449 barrer with CO2/N2 selectivities between 27 and as high as 39. The reported thin-film composite membranes represent a significant increase in performance compared with similar polymeric membranes.
dc.language	English
dc.publisher	AMER CHEMICAL SOC
dc.relation.ispartof	Industrial and Engineering Chemistry Research
dc.relation.isbasedon	10.1021/acs.iecr.6b02167
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences, 09 Engineering
dc.subject.classification	Chemical Engineering
dc.title	Blends of Fluorinated Additives with Highly Selective Thin-Film Composite Membranes to Increase CO<inf>2</inf> Permeability for CO<inf>2</inf>/N<inf>2</inf> Gas Separation Applications
dc.type	Journal Article
utslib.citation.volume	55
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access	*
dc.date.updated	2022-08-16T02:22:32Z
pubs.issue	30
pubs.publication-status	Published
pubs.volume	55
utslib.citation.issue	30

Abstract:

A highly permeable poly(ethylene glycol-b-pentafluoropropyl acrylate) diblock copolymer additive is blended with the highly selective PEBAX 1657 block copolymer and spin coated onto cross-linked poly(dimethylsiloxane) gutter layers coated onto porous polyacrylonitrile supports for use in CO2/N2 gas separation applications. Blended films containing up to 70 wt % of the fluorinated additive are successfully formed and characterized by scanning electron microscopy, revealing an average film thickness of 200 nm. Addition of the fluorinated additive results in significant enhancements to CO2 permeance, in the range of 916 to 1538 GPU while maintaining a CO2/N2 selectivity between 21 and 33 when blended at 60-65 wt %. The impact of temperature and pressure on membrane performance was determined at temperatures of 25-55 °C and pressures of 100-500 kPa. Theoretical calculations of the performance without the gutter layer resistance demonstrate that the corresponding active membrane layer could achieve CO2 permeances between 1128 and 2246 GPU and permeabilities between 226 and 449 barrer with CO2/N2 selectivities between 27 and as high as 39. The reported thin-film composite membranes represent a significant increase in performance compared with similar polymeric membranes.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/160297