Demixing of micelles of fluorocarbon and hydrocarbon surfactants. Effects of hydrophobic and hydrophilic groups of hydrocarbon surfactants

Journal Article · Thu Jan 20 04:00:00 EST 1983 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100225a035· OSTI ID:5588313

Funasakl, N; Hada, S

The mutual solubility limits, xA and xB, of a nonionic fluorocarbon surfactant (NFE) and dodecyl polyoxyethylene glycol ether (DEm) and of an anionic fluorocarbon surfactant (NF) and sodium alkyl sulfate (SAS) in micelles are determined by the surface tension method as a function of temperature. The elongation of the alkyl chain of SAS increases the critical solution temperature Tc regularly and decreases the critical mole fraction xcH of SAS. These results are in line with the behavior of liquid fluorocarbon-hydrocarbon mixtures. The dependence of Tc and xcH on the concentration of added sodium chloride suggests the participation of the electrostatic effect on mixing of micelles of NF and SAS. The elongation of the oxyethylene chain of DEm for the NFE-DEm system decreases Tc and xcH. 31 references.

• OSTI ID: 5588313
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Journal Issue: 2 Vol. 87:2; ISSN JPCHA
• Country of Publication: United States
• Language: English

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02 PETROLEUM
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FOSSIL FUELS
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