carbon surfactant. Therefore, solubilization by fluorinated The solubilization of benzene, toluene, ethylbenzene, n-propylsurfactants is of great theoretical and practical interest, but benzene, n-butylbenzene, n-pentylbenzene, n-hexylbenzene, and there is little published information. In contrast, binary mixsome arenes into lithium 1-perfluoroundecanoate micelles was tures of fluorocarbon and hydrocarbon surfactants in aqueous measured with increasing the surfactant concentration. Concensolution have been studied by many researchers because of trations of all the solubilizates in equilibrium were determined the peculiar properties due to the higher hydrophobicity of spectrophotometrically at 293.2, 298.2, 303.2, and 308.2 K. The fluorinated surfactants as compared with the corresponding concentration of benzene, toluene, naphthalene, anthracene, and hydrogenated compounds (3, 4). However, very little data pyrene was not found to increase under the same condition. The are available concerning the effect of additives on fluorofirst stepwise association constants (K V 1 ) between solubilizate monomer and vacant micelle were evaluated from the equilibrium carbon micelles (5-8).
concentration of solubilizate and were found to increase with in-Very low CMC value of fluorinated surfactants with creasing hydrophobicity of the solubilizate molecules for the alkyllonger alkyl chains leads to operational difficulties such as benzenes. The thermodynamic parameters in this system were experimental errors and influences of contamination for very compared with those for solubilization into 1-dodecanesulfonic dilute surfactant solutions. Actually, the fluorinated ionic acid micelles. These solubilizates were all solubilized on the surface surfactants under investigation mostly concerned alkyl region of the fluorocarbon micelles, which is different from the chains of 7-or 8-carbon atoms, and as far as we know the previous result that the solubilizates with longer alkyl chains were solubilization works have been conducted with the solutions in the inner part of the above-mentioned hydrocarbon micelles. saturated mostly with solubilizates and with high surfactant