Winsor behaviour of sucrose fatty acid esters: choice of the cosurfactant and effect of the surfactant composition

The behaviour of various sucrose fatty acid esters blends in pseudoternary mixtures {water/methyl stearate/sucrose ester+propanol or ethanol} was explored. The qualitative and quantitative analysis of the phases gave information on the distribution of the surfactant and the oil in the polyphasic sys...

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Bibliographic Details
Published inColloids and surfaces. A, Physicochemical and engineering aspects Vol. 203; no. 1; pp. 55 - 66
Main Authors Muller, Anne-Sophie, Gagnaire, Juliette, Queneau, Yves, Karaoglanian, Marc, Maitre, Jean-Paul, Bouchu, Alain
Format Journal Article
LanguageEnglish
Published Elsevier B.V 25.04.2002
Subjects
HLB
Soap
Sucrose
Sugar
Surfactant
Winsor
Winsor
Sucrose
Surfactant
Soap
Sugar
HLB
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Summary:The behaviour of various sucrose fatty acid esters blends in pseudoternary mixtures {water/methyl stearate/sucrose ester+propanol or ethanol} was explored. The qualitative and quantitative analysis of the phases gave information on the distribution of the surfactant and the oil in the polyphasic systems. It was seen that the transitions between Winsor systems of type I–III can be obtained by using propanol as cosurfactant. Transition from a Winsor I behaviour to a Winsor II behaviour was observed, depending on the substitution degree of the sucrose ester. Marked differences can also be seen by this method between sucrose esters blends containing same contents of monoesters, but differing by the content of minor products, especially soaps. The Winsor behaviour can thus be used as a ‘fingerprint’ to distinguish different sucrose ester batches.
ISSN:0927-7757
1873-4359
DOI:10.1016/S0927-7757(01)01067-6