Achieving enhanced hydrophobicity of graphene membranes by covalent modification with polydimethylsiloxane

Lei, WW; Li, H; Shi, LY; Diao, YF; Zhang, YL; Ran, R; Ni, W

Achieving enhanced hydrophobicity of graphene membranes by covalent modification with polydimethylsiloxane

Lei, WW Li, H Shi, LY Diao, YF Zhang, YL Ran, R Ni, W

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Publication Type:: Journal Article
Citation:: Applied Surface Science, 2017, 404 pp. 230 - 237
Issue Date:: 2017-05-15

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Field	Value	Language
dc.contributor.author	Lei, WW	en_US
dc.contributor.author	Li, H	en_US
dc.contributor.author	Shi, LY	en_US
dc.contributor.author	Diao, YF	en_US
dc.contributor.author	Zhang, YL	en_US
dc.contributor.author	Ran, R	en_US
dc.contributor.author	Ni, W https://orcid.org/0000-0002-4933-594X	en_US
dc.date.issued	2017-05-15	en_US
dc.identifier.citation	Applied Surface Science, 2017, 404 pp. 230 - 237	en_US
dc.identifier.issn	0169-4332	en_US
dc.identifier.uri	http://hdl.handle.net/10453/126874
dc.description.abstract	© 2017 Elsevier B.V. In this study, the graphene oxide was covalently modified by amino terminated polydimethylsiloxane (PDMS) through amidation reaction. And the membranes of the graphene oxide (GO), reduced graphene oxide (RGO) and PDMS-covalently modified graphene were prepared respectively by a vacuum filtration method, and the wettability of these membranes were investigated. Infrared spectroscopy, Raman, X-ray diffraction, X-ray photoelectron spectroscopy, and thermogravimetry analysis combined with dispersion ability indicated that PDMS chains were successfully grafted on the surface of graphene oxide sheets. The morphology of the prepared membranes had smooth surface and well-stacked structure in the cross-section indicated by the scanning electron microscope and EDS-mapping. The contact angle measurements indicated that the PDMS-modified graphene membrane with water contact angle 129.5° showed increased hydrophobicity compared with GO and RGO membranes.	en_US
dc.relation.ispartof	Applied Surface Science	en_US
dc.relation.isbasedon	10.1016/j.apsusc.2017.01.292	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Applied Physics	en_US
dc.title	Achieving enhanced hydrophobicity of graphene membranes by covalent modification with polydimethylsiloxane	en_US
dc.type	Journal Article
utslib.citation.volume	404	en_US
utslib.for	MD Multidisciplinary	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 Electrical and Data Engineering
utslib.copyright.status	closed_access	*
pubs.declined	2018-08-08T16:19:12.546+1000
pubs.publication-status	Published	en_US
pubs.volume	404	en_US

Abstract:

© 2017 Elsevier B.V. In this study, the graphene oxide was covalently modified by amino terminated polydimethylsiloxane (PDMS) through amidation reaction. And the membranes of the graphene oxide (GO), reduced graphene oxide (RGO) and PDMS-covalently modified graphene were prepared respectively by a vacuum filtration method, and the wettability of these membranes were investigated. Infrared spectroscopy, Raman, X-ray diffraction, X-ray photoelectron spectroscopy, and thermogravimetry analysis combined with dispersion ability indicated that PDMS chains were successfully grafted on the surface of graphene oxide sheets. The morphology of the prepared membranes had smooth surface and well-stacked structure in the cross-section indicated by the scanning electron microscope and EDS-mapping. The contact angle measurements indicated that the PDMS-modified graphene membrane with water contact angle 129.5° showed increased hydrophobicity compared with GO and RGO membranes.

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http://hdl.handle.net/10453/126874