Micellar solubilization in strongly interacting binary surfactant systems. [Binary surfactant systems of: dodecyltrimethylammonium chloride + sodium dodecyl sulfate; benzyldimethyltetradecylammonium chloride + tetradecyltrimethylammonium chloride]
- Universite Pierre et Marie Curie, Paris (France)
- Faculte de Pharmacie de Paris-sud, Chatenay-Malabry (France)
The apparent partition coefficient P of barbituric acids between micelles and water has been determined in mixed binary surfactant solutions from solubility measurements in the whole micellar composition range. The binary systems chosen ranged from the strongly interacting system dodecyltrimethylammonium chloride + sodium dodecyl sulfate to weakly interacting systems such as benzyldimethyltetradecylammonium chloride + tetradecyltrimethyammonium chloride. In all cases studied, mixed micelle formation is unfavorable to micellar solubilization. A correlation is found between the unlike surfactants interaction energy, as measured by the regular solution parameter {beta} and the solute partition coefficient change upon surfactant mixing. By use of literature data on micellar solubilization in binary surfactant solutions, it is shown that the change of P for solutes which are solubilized by surface adsorption is generally governed by the sign and amplitude of the interaction parameter {beta}.
- OSTI ID:
- 6219965
- Journal Information:
- Langmuir; (USA), Vol. 6:7; ISSN 0743-7463
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
QUATERNARY COMPOUNDS
THERMODYNAMIC PROPERTIES
SULFURIC ACID ESTERS
EXPERIMENTAL DATA
MICELLAR SYSTEMS
SOLUBILITY
SURFACTANTS
WATER
AMINES
AMMONIUM COMPOUNDS
DATA
ESTERS
HYDROGEN COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
020300* - Petroleum- Drilling & Production
400201 - Chemical & Physicochemical Properties