Take'uchi M, Moroi Y
Faculty of Science, Kyushu University, 33, Higashi-ku, Fukuoka, 812-81, Japan
J Colloid Interface Sci. 1998 Jan 15;197(2):230-5. doi: 10.1006/jcis.1997.5287.
The solubilization of benzene, toluene, ethylbenzene, n-propylbenzene, n-butylbenzene, n-pentylbenzene, n-hexylbenzene, and some arenes into lithium 1-perfluoroundecanoate micelles was measured with increasing the surfactant concentration. Concentrations of all the solubilizates in equilibrium were determined spectrophotometrically at 293.2, 298.2, 303.2, and 308.2 K. The concentration of benzene, toluene, naphthalene, anthracene, and pyrene was not found to increase under the same condition. The first stepwise association constants (K1) between solubilizate monomer and vacant micelle were evaluated from the equilibrium concentration of solubilizate and were found to increase with increasing hydrophobicity of the solubilizate molecules for the alkylbenzenes. The thermodynamic parameters in this system were compared with those for solubilization into 1-dodecanesulfonic acid micelles. These solubilizates were all solubilized on the surface region of the fluorocarbon micelles, which is different from the previous result that the solubilizates with longer alkyl chains were in the inner part of the above-mentioned hydrocarbon micelles. Copyright 1998 Academic Press. Copyright 1998Academic Press
随着表面活性剂浓度的增加，测量了苯、甲苯、乙苯、正丙苯、正丁苯、正戊苯、正己苯以及一些芳烃在全氟十一烷酸锂胶束中的增溶情况。在293.2、298.2、303.2和308.2 K下，通过分光光度法测定了所有增溶物在平衡时的浓度。发现在相同条件下，苯、甲苯、萘、蒽和芘的浓度没有增加。根据增溶物的平衡浓度评估了增溶物单体与空胶束之间的第一步缔合常数（K1），发现对于烷基苯，该常数随着增溶物分子疏水性的增加而增大。将该体系中的热力学参数与增溶到十二烷基磺酸胶束中的热力学参数进行了比较。这些增溶物都增溶在碳氟化合物胶束的表面区域，这与之前的结果不同，之前的结果是烷基链较长的增溶物位于上述烃类胶束的内部。版权所有1998年学术出版社。版权所有1998年学术出版社
