On the segregative tendency of ethoxylated surfactants in nonionic mixed micelles

The aqueous mixtures of two nonionic surfactants, pentaethyleneglycol monohexyl ether (C(6)E(5)) and hexyl dimethyl phosphine oxide (C(6)DMPO), were investigated by the pulsed-gradient stimulated-echo NMR technique. Quite unexpectedly, the results show that the mixture behavior significantly deviate...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 27(2011), 7 vom: 05. Apr., Seite 3317-23
1. Verfasser: D'Errico, Gerardino (VerfasserIn)
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a The aqueous mixtures of two nonionic surfactants, pentaethyleneglycol monohexyl ether (C(6)E(5)) and hexyl dimethyl phosphine oxide (C(6)DMPO), were investigated by the pulsed-gradient stimulated-echo NMR technique. Quite unexpectedly, the results show that the mixture behavior significantly deviates from ideality. Particularly, analysis of the data indicates that, in the mixed aggregates, C(6)E(5) molecules prefer to be surrounded by other C(6)E(5) molecules, forming domains of hydrated ethoxilic chains on the micellar surface. Molecular reasons for the segregative tendency of ethoxylated surfactants and its applicative implications in formulation technology are discussed 
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