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dc.contributor.authorComelles, Francesces_ES
dc.contributor.authorRibosa, Isabeles_ES
dc.contributor.authorGonzález, Juan Josées_ES
dc.contributor.authorGarcía, María Teresaes_ES
dc.date.accessioned2016-11-22T08:27:18Z-
dc.date.available2016-11-22T08:27:18Z-
dc.date.issued2017-03-15-
dc.identifier.citationJournal of Colloid and Interface Science 490: 119–128 (2017)es_ES
dc.identifier.urihttp://hdl.handle.net/10261/140525-
dc.description.abstractHypothesis Mixtures of the cationic surfactant hexadecyltrimethylammonium bromide (CTA-Br) and the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate (bmim-BF4) in aqueous solutions are expected to behave as typical binary cationic surfactant system taking into account the surface activity displayed by the ionic liquid, instead of considering the IL as a water cosolvent. Experiments Surface tension and conductivity measurements have been conducted as a function of the total concentration of the mixtures at different surfactant mole fraction (αCTA-Br) to investigate the surface active properties. Findings Turbidity immediately appearing when the compounds are mixed in water suggests the spontaneous formation of the low soluble compound hexadecyltrimethylammonium tetrafluoroborate (CTA-BF4), together with the salt formed by the respective counterions bmim+and Br− in solution. For αCTA-Br ≠ 0.5, furthermore of the mentioned compounds, the spare bmim-BF4 (for αCTA-Br < 0.5) or CTA-Br (for αCTA-Br > 0.5), are also present in the aqueous solution. Systems containing excess of bmim-BF4 show a low critical aggregate concentration (cac), but an unexpected high surface tension at cac (γcac ≈ 53–56 mN/m), as pure CTA-BF4. For systems containing excess of CTA-Br, cac increases but γcac decreases up to 36 mN/m. Mixtures of pure CTA-BF4 and bmim-BF4 or CTA-Br behave as typical binary surfactant systems.es_ES
dc.description.sponsorshipThe authors thank the Spanish Ministry of Economia y Competitividad (CTQ2013-41514-P) for financial support.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relationMINECO/ICTI2013-2016/CTQ2013-41514-Pes_ES
dc.relation.isversionofPostprintes_ES
dc.rightsembargoedAccesses_ES
dc.subjectCTA-Bres_ES
dc.subjectbmim-BF4es_ES
dc.subjectCationic surfactantes_ES
dc.subjectCTABes_ES
dc.subjectIonic liquides_ES
dc.subjectSurface tensiones_ES
dc.subjectConductivityes_ES
dc.subjectBynary Systemses_ES
dc.subjectSynergismes_ES
dc.titleHexadecyltrimethylammonium bromide (CTA-Br) and 1-butyl-3-methylimidazolium tetrafluoroborate (bmim-BF4) in aqueous solution: An ephemeral binary systemes_ES
dc.typeArtículoes_ES
dc.identifier.doidx.doi.org/10.1016/j.jcis.2016.11.022-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.jcis.2016.11.022es_ES
dc.embargo.terms2019-05-16es_ES
dc.rights.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/-
dc.contributor.funderMinisterio de Economía y Competitividad (España)es_ES
dc.relation.csices_ES
oprm.item.hasRevisionno ko 0 false*
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
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