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Phase behavior of the orange essential oil/sodium bis(2-ethylhexyl)sulfosuccinate/water system

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dc.contributor.authorFeitosa, Eloi [UNESP]
dc.contributor.authorCavalcante, Vanessa R. O. [UNESP]
dc.contributor.authorAmaral, Lia Q.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T14:02:34Z
dc.date.available2014-05-20T14:02:34Z
dc.date.issued2009-09-20
dc.description.abstractThe ternary phase diagram for the orange essential oil (OEO)/sodium bis(2-ethylhexyl)sulfosuccinate (AOT)/water system was constructed at 25 degrees C. It indicates a large single phase region, comprising an isotropic water-in-oil (W/O) microemulsion (ME) phase (L(2)), a liquid crystal (LC) (lamellar or hexagonal) and a large unstable emulsion phase that separates in two phases of normal and reverse micelles (L(1) and L(2)). In this communication the properties of the ME are investigated by viscosity, electric conductivity and small angle X-ray scattering (SAXS) indicating that the isotropic ME phase exhibits different behaviors depending on composition. At low water content low viscous "dry" surfactant structures are formed, whereas at higher water content higher viscous water droplets are formed. The experimental data allow the determination of the transition from "dry" to the water droplet structures within the L(2) phase. SAXS analyses have also been performed for selected LC samples. (C) 2009 Elsevier B.V. All rights reserved.en
dc.description.affiliationSão Paulo State Univ, Dept Phys, Sao Jose do Rio Preto, SP, Brazil
dc.description.affiliationUniv São Paulo, Inst Phys, São Paulo, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Dept Phys, Sao Jose do Rio Preto, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent82-86
dc.identifierhttp://dx.doi.org/10.1016/j.colsurfa.2009.06.039
dc.identifier.citationColloids and Surfaces A-physicochemical and Engineering Aspects. Amsterdam: Elsevier B.V., v. 348, n. 1-3, p. 82-86, 2009.
dc.identifier.doi10.1016/j.colsurfa.2009.06.039
dc.identifier.issn0927-7757
dc.identifier.urihttp://hdl.handle.net/11449/22057
dc.identifier.wosWOS:000270623900014
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofColloids and Surfaces A: Physicochemical and Engineering Aspects
dc.relation.ispartofjcr2.829
dc.relation.ispartofsjr0,753
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectPhase diagramen
dc.subjectMicroemulsionen
dc.subjectAOTen
dc.subjectOrange essential oilen
dc.subjectViscosityen
dc.subjectElectric conductivityen
dc.subjectSAXSen
dc.titlePhase behavior of the orange essential oil/sodium bis(2-ethylhexyl)sulfosuccinate/water systemen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências, Letras e Ciências Exatas, São José do Rio Pretopt
unesp.departmentFísica - IBILCEpt

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São José do Rio Preto - IBILCE - Instituto de Biociências, Letras e Ciências Exatas