Swelling of ionic and non-ionic surfactant micelles by high pressure gases

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dc.contributor.authorO'Callaghan, John M.
dc.contributor.authorMcNamara, Hugh
dc.contributor.authorCopley, Mark P.
dc.contributor.authorHanrahan, John P.
dc.contributor.authorMorris, Michael A.
dc.contributor.authorSteytler, David C.
dc.contributor.authorHeenan, Richard K.
dc.contributor.authorHolmes, Justin D.
dc.contributor.funderTrinity College Dublinen
dc.contributor.funderEuropean Commissionen
dc.date.accessioned2018-08-28T14:03:22Z
dc.date.available2018-08-28T14:03:22Z
dc.date.issued2010-02-11
dc.date.updated2018-08-06T15:43:57Z
dc.description.abstractThe influence of different solvent environments on the size, shape, and characteristics of surfactant micelles of Pluronic F127 and CTAB was investigated by small-angle neutron scattering (SANS). SANS experiments were undertaken on dilute micellar surfactant solutions of F127 and CTAB that between them were exposed to liquid and supercritical carbon dioxide, liquid propane, ethane, and heptane under various pressures and temperatures. Swelling of the surfactant micelles could be directly related to the solubility of the solvents within the micelles, especially within their cores. Carbon dioxide produced the largest swelling of the Pluronic F127 micelles, compared to propane and ethane, which mirrors the solubility of the gases in the PPO core of the micelles. Conversely, the extent of swelling of the cores of CTAB micelles was greater with propane compared to carbon dioxide, which again relates to the solubility of the solvents in the alkane core of the CTAB micelles.en
dc.description.sponsorshipTrinity College Dublin (Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) (Project PR22)); European Commission (Access to Research Infrastructure action of the Improving Human Potential Programme)en
dc.description.statusPeer revieweden
dc.description.versionSubmitted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationO’Callaghan, J. M., McNamara, H., Copley, M. P., Hanrahan, J. P., Morris, M. A., Steytler, D. C., Heenan, R. K. and Holmes, J. D. (2010) 'Swelling of Ionic and Nonionic Surfactant Micelles by High Pressure Gases', Langmuir, 26(11), pp. 7725-7731. doi: 10.1021/la904464ken
dc.identifier.doi10.1021/la904464k
dc.identifier.endpage7731en
dc.identifier.issn0743-7463
dc.identifier.journaltitleLangmuiren
dc.identifier.startpage7725en
dc.identifier.urihttps://hdl.handle.net/10468/6648
dc.identifier.volume26en
dc.language.isoenen
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urihttp://pubs.acs.org/doi/abs/10.1021/la904464k
dc.rights© 2010 American Chemical Society. This document is the unedited Author’s version of a Submitted Work that was subsequently accepted for publication in Langmuir, copyright © American Chemical Society after peer review. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/la904464ken
dc.subjectMicellesen
dc.subjectCarbon dioxideen
dc.subjectEthaneen
dc.subjectHydrocarbonsen
dc.subjectIonization of liquidsen
dc.subjectLiquidsen
dc.subjectNeutron scatteringen
dc.subjectNonionic surfactantsen
dc.subjectPropaneen
dc.subjectSolubilityen
dc.subjectSolventsen
dc.subjectSupercritical fluid extractionen
dc.subjectSwellingen
dc.titleSwelling of ionic and non-ionic surfactant micelles by high pressure gasesen
dc.typeArticle (peer-reviewed)en
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