Abstract

From a review of the major factors responsible for surfactant mesophase structure, a model phase diagram is deduced which shows phase structure as a function of surfactant volume fraction and micelle curvature. To test this model the phase behaviour of a series of pure polyoxyethylene surfactants (CnEOm) with water has been studied using optical microscopy over the temperature range 0–100 °C. The compounds studied were C8EO3, C8EO4, C8EO8, C8EO12, C10EO3, C12EO3-C12EO6, C12EO8, C12EO12, C14EO3, C14EO6, C16EO3, C16EO4, C16EO6, C16EO8, C16EO12, C9PhEO8 and C12(2-C10)EO10. Phase diagrams were determined for C8EO4, C12EO3-C12EO6, C12EO8, C16EO4, C16EO8 and C16EO12. With the other compounds optical microscopy was used to determine the number, sequence and type of mesophases.

Keywords

MesophaseMiscibilityPulmonary surfactantPhase diagramOptical microscopePhase (matter)Cloud pointChemistryMicelleVolume fractionAnalytical Chemistry (journal)Materials scienceChromatographyOrganic chemistryPhysical chemistryPolymerAqueous solutionScanning electron microscope

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Publication Info

Year
1983
Type
article
Volume
79
Issue
4
Pages
975-975
Citations
1001
Access
Closed

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D. John Mitchell, G. J. T. Tiddy, Loraine Waring et al. (1983). Phase behaviour of polyoxyethylene surfactants with water. Mesophase structures and partial miscibility (cloud points). Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases , 79 (4) , 975-975. https://doi.org/10.1039/f19837900975

Identifiers

DOI
10.1039/f19837900975