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dc.contributor.authorComelles, Francesc-
dc.contributor.authorSánchez-Leal, Joaquim-
dc.contributor.authorGonzález, J.-
dc.identifier.citationJournal of Surfactants and Detergent 10(3): 137-144 (2007)en_US
dc.description8 pages, 5 figures.-- Printed version published Aug 2007.en_US
dc.description.abstractThe influence of surfactant structure on the formation of lamellar liquid crystals with very low surfactant concentration was investigated for systems composed of oleic acid, diethyleneglycol ethyl ether and water. Surfactants belonging to anionic and cationic families were checked: phosphated oleyl ether 3 EO (PO3EO), triethanolamine oleate (TEAO) and sodium lauryl ether sulphate (SLES) as anionic surfactants and two alkyl trimethylammonium bromide type (C12TAB and C14TAB) as cationic surfactants. For each of the surfactants, the appropriate relationships between surfactant, oleic acid and glycol to furnish lamellar liquid crystals when these basic compositions were further diluted with water were established. The appropriate ranges of dilution allowing the liquid crystal formation were also determined. These liquid crystals presented an attractive appearance because of their transparency and high viscosity, although in the beginning of its formation, a short range of less viscous compositions (so called liquid/gel compositions) appears in some cases. Through water dilution, the initial surfactant percentages are noticeably reduced being possible liquid crystals with 2–5 wt% of surfactant.en_US
dc.description.sponsorshipThe authors acknowledge the financial support from CICYT (CTQ 2004–00773 Project).en_US
dc.format.extent19968 bytes-
dc.publisherAmerican Oil Chemists' Societyen_US
dc.subjectIonic surfactantsen_US
dc.subjectOleic aciden_US
dc.subjectDiethyleneglycol ethyl etheren_US
dc.subjectTransparent gelen_US
dc.subjectLamellar liquid crystalen_US
dc.subjectInterlamellar distancesen_US
dc.subjectSAXS measurements-
dc.titleInfluence of Ionic Surfactants on the Formation of Liquid Crystals in Oleic Acid/Glycol/Water Systemsen_US
dc.description.peerreviewedPeer revieweden_US
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