Electrostatic effects on comicellization of fluorocarbon and hydrocarbon surfactants

Journal Article · Mon Dec 01 04:00:00 EST 1980 · J. Colloid Interface Sci.; (United States)

DOI:https://doi.org/10.1016/0021-9797(80)90576-7· OSTI ID:5954012

Funasaki, N; Hada, S

The surface tension of mixtures of an ionic fluorocarbon surfactant (NF; C/sub 9/F/sub 17/OC/sub 6/H/sub 4/SO/sub 3/Na) with nonionic (DMS; C/sub 12/H/sub 25/SOCH/sub 3/) and ionic (STS; C/sub 14/H/sub 29/SO/sub 4/Na) hydrocarbon surfactants was measured in the presence of sodium chloride at different concentrations. The CMC vs monomeric composition curve for the NF-STS system broke where 2 micellar phases coexisted. The break became sharper as the concentration of sodium chloride increased. The micellar composition was determined from the surface tension data above the CMC. In the surface tension vs micellar composition curve, the NF-STS system showed a plateau region whereas the NF-DMS system did not show such a region. In mixed micelles, NF and DMS were completely miscible and NF and STS had a limited mutual solubility. The critical-solution temperature and the composition at the critical solution temperature depended on the concentration of sodium chloride. These facts show that the electrostatic factor is involved in the miscibility of these fluorocarbon and hydrocarbon surfactants in micelles. 11 references.

• OSTI ID: 5954012
• Journal Information: J. Colloid Interface Sci.; (United States), Journal Name: J. Colloid Interface Sci.; (United States) Vol. 78:2; ISSN JCISA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBON FLUORIDES
CHLORIDES
CHLORINE COMPOUNDS
COLLOIDS
DISPERSIONS
ELECTROSTATICS
EMULSIONS
ENHANCED RECOVERY
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
MICELLAR SYSTEMS
MICROEMULSIONS
ORGANIC COMPOUNDS
QUANTITY RATIO
RECOVERY
SODIUM CHLORIDES
SODIUM COMPOUNDS
SOLUBILITY
SURFACE PROPERTIES
SURFACE TENSION
SURFACTANTS