Solubilization of phenothiazine in aqueous surfactant micelles
- Department of Chemistry, Faculty of Science, Kyushu University, Higashi-ku, Fukuoka (Japan)
The maximum additive concentration (MAC) of phenothiazine in aqueous micellar solutions of sodium dodecyl sulfate, manganese(II) dodecyl sulfate, and zinc(III) dodecyl sulfate was determined spectrophotometrically at 20, 25, and 30 C. The plots of MAC against surfactant concentrations could be divided into 2 straight lines. The surfactant concentration at their intersection was in good agreement with the critical micelle concentration (CMC) determined by conventional methods. The thermodynamic parameters of the interaction between monomeric phenothiazine molecule and micelle without any solubilizate were evaluated from the stepwise association equilibria between solubilizates and micelles. Through the analysis of the data from the viewpoint of aggregation numbers and kinds of gegenions of micelles, it was determined that the aggregation numbers played a more important role than the gegenions for an incorporation of phenothiazine into the micelles. The Poisson distribution is highly suggested for the distribution of phenothiazine among the present micelles. 21 references.
- OSTI ID:
- 5954151
- Journal Information:
- Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 13 Vol. 86; ISSN 0022-3654; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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020300* -- Petroleum-- Drilling & Production
ALKALI METAL COMPOUNDS
AZINES
ENERGY SOURCES
ENHANCED RECOVERY
EQUILIBRIUM
FLUID INJECTION
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
KINETICS
MANGANESE COMPOUNDS
MANGANESE SULFATES
MECHANICAL PROPERTIES
MICELLAR SYSTEMS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
PHENOTHIAZINES
POISSON RATIO
QUANTITY RATIO
RECOVERY
SODIUM COMPOUNDS
SODIUM SULFATES
SOLUBILITY
SPECTROPHOTOMETRY
SULFATES
SULFUR COMPOUNDS
SURFACTANTS
TRANSITION ELEMENT COMPOUNDS
WATERFLOODING
ZINC COMPOUNDS
ZINC SULFATES