Adsorption of heptane–toluene binary mixtures on a hydrophobic polymer surface

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dc.contributor.author Ramsay, Margo
dc.contributor.author Beutier, Clémentine
dc.contributor.author McGarvey, G. Bryce
dc.contributor.author Hore, Dennis K.
dc.date.accessioned 2020-01-26T21:37:10Z
dc.date.available 2020-01-26T21:37:10Z
dc.date.copyright 2019 en_US
dc.date.issued 2019
dc.identifier.citation Ramsay, M.; Beutier, C.; McGarvey, G. B.; & Hore, D. K. (2017). Adsorption of heptane–toluene binary mixtures on a hydrophobic polymer surface. The Journal of Chemical Physics, 150(1), 014702. DOI: 10.1063/1.5066555 en_US
dc.identifier.uri https://doi.org/10.1063/1.5066555
dc.identifier.uri http://hdl.handle.net/1828/11509
dc.description.abstract Polymer coatings offer a means to modulate the adsorption of molecules onto solid surfaces by offering a surface functionality, charge, roughness, and hydrophobicity that is different from the underlying substrate. One application is to provide anti-fouling functions for metal surfaces. Understanding solvent-surface interactions is an essential component to gaining mechanistic insight into the adsorption process. In this work, we study the adsorption of toluene–heptane binary mixtures onto a perflurorinated polymer surface. We use a combination of IR absorption and Raman scattering spectroscopy to study the mixture in the bulk phase, and surface-specific visible-infrared sum-frequency generation to probe the surface layers. Through the use of homo- and heterospectral two-dimensional correlation spectroscopy, we conclude that the adsorption of the two solvents is reversible and that the surface structure is generally independent of the surface composition, with a small change in toluene orientation as the toluene content increases. We also find that the hydrophobic fluropolymer has very little preference for either solvent, similar to previous studies on hydrophilic surfaces. en_US
dc.description.sponsorship We thank the Natural Sciences and Engineering Research Council of Canada (NSERC) for support of this science with a Discovery Grant and Imperial Oil for a University Research Award. NSERC in partnership with Imperial Oil provided funding with a Collaborative Research and Development grant. Tasha Jarisz provided experimental assistance, and Sandra Roy participated in the discussion of the 2DCOS results. Stanislav Konorov assisted in the collection of the Raman spectra at the University of Victoria CAMTEC facility. en_US
dc.language.iso en en_US
dc.publisher The Journal of Chemical Physics en_US
dc.subject Raman spectroscopy en_US
dc.subject Surface and interface chemistry en_US
dc.subject Polymers en_US
dc.subject Correlation spectroscopy en_US
dc.subject Infrared absorption spectroscopy en_US
dc.subject Sum-frequency generation en_US
dc.title Adsorption of heptane–toluene binary mixtures on a hydrophobic polymer surface en_US
dc.type Article en_US
dc.description.scholarlevel Faculty en_US
dc.description.reviewstatus Reviewed en_US

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