Novel CA/PVDF nanofiber supports strategically designed via coaxial electrospinning for high performance thin-film composite forward osmosis membranes for desalination

Shibuya, M; Park, MJ; Lim, S; Phuntsho, S; Matsuyama, H; Shon, HK

Novel CA/PVDF nanofiber supports strategically designed via coaxial electrospinning for high performance thin-film composite forward osmosis membranes for desalination

Shibuya, M Park, MJ Lim, S

Phuntsho, S

Matsuyama, H Shon, HK

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Publication Type:: Journal Article
Citation:: Desalination, 2018, 445 pp. 63 - 74
Issue Date:: 2018-11-01

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	2018_MJ PARK_Desal_Novel CA PVDF nanofiber supports strategically designed via coaxial electrospinning for high performance TFC FO membranes.pdf	Published Version	3.09 MB	Adobe PDF	View/Open

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Field	Value	Language
dc.contributor.author	Shibuya, M	en_US
dc.contributor.author	Park, MJ	en_US
dc.contributor.author	Lim, S https://orcid.org/0000-0002-9253-3693	en_US
dc.contributor.author	Phuntsho, S https://orcid.org/0000-0002-3917-3916	en_US
dc.contributor.author	Matsuyama, H	en_US
dc.contributor.author	Shon, HK https://orcid.org/0000-0002-3777-7169	en_US
dc.date.issued	2018-11-01	en_US
dc.identifier.citation	Desalination, 2018, 445 pp. 63 - 74	en_US
dc.identifier.issn	0011-9164	en_US
dc.identifier.uri	http://hdl.handle.net/10453/127258
dc.description.abstract	© 2018 Elsevier B.V. This study introduces a novel electrospun nanofiber mat fabricated via coaxial electrospinning as a support for high performance thin-film composite (TFC) forward osmosis (FO) membrane. This method produces a dual layer composite nanofiber support consisted of a polyvinylidene fluoride (PVDF) core layer and a cellulose acetate (CA) sheath layer, which provide mechanical stability and hydrophilicity, respectively. The CA sheath layer aims to cover the hydrophobic core layer and improve its hydrophilicity. The TFC FO membrane with coaxial electrospun CA/PVDF support layer not only showed high improvement in water flux due to improved hydrophilicity, but also exhibited comparable mechanical strength with pure PVDF nanofiber support. After FO operation using 0.5 M NaCl as draw solution and deionized water as feed solution, the coaxial electrospun CA/PVDF composite based TFC-FO membrane achieved the following: water flux of 31.2 L m−2 h−1, remarkably lower specific reverse salt flux of 0.03 g L−1, and low structural parameter of 190 μm. Coaxial electrospinning is therefore a promising approach to fabricate high performance FO membrane whose support exhibits high porosity, mechanical stability, and hydrophilicity.	en_US
dc.relation	http://purl.org/au-research/grants/arc/FT140101208
dc.relation.ispartof	Desalination	en_US
dc.relation.isbasedon	10.1016/j.desal.2018.07.025	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Novel CA/PVDF nanofiber supports strategically designed via coaxial electrospinning for high performance thin-film composite forward osmosis membranes for desalination	en_US
dc.type	Journal Article
utslib.citation.volume	445	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
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
pubs.publication-status	Published	en_US
pubs.volume	445	en_US

Abstract:

© 2018 Elsevier B.V. This study introduces a novel electrospun nanofiber mat fabricated via coaxial electrospinning as a support for high performance thin-film composite (TFC) forward osmosis (FO) membrane. This method produces a dual layer composite nanofiber support consisted of a polyvinylidene fluoride (PVDF) core layer and a cellulose acetate (CA) sheath layer, which provide mechanical stability and hydrophilicity, respectively. The CA sheath layer aims to cover the hydrophobic core layer and improve its hydrophilicity. The TFC FO membrane with coaxial electrospun CA/PVDF support layer not only showed high improvement in water flux due to improved hydrophilicity, but also exhibited comparable mechanical strength with pure PVDF nanofiber support. After FO operation using 0.5 M NaCl as draw solution and deionized water as feed solution, the coaxial electrospun CA/PVDF composite based TFC-FO membrane achieved the following: water flux of 31.2 L m−2 h−1, remarkably lower specific reverse salt flux of 0.03 g L−1, and low structural parameter of 190 μm. Coaxial electrospinning is therefore a promising approach to fabricate high performance FO membrane whose support exhibits high porosity, mechanical stability, and hydrophilicity.

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http://hdl.handle.net/10453/127258