caa a22 4500 465796095 CHVBK 20180323112038.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF02541866 doi (NATIONALLICENCE)springer-10.1007/BF02541866 Properties of aqueous solutions for two binary mixed systems between two kinds of bile salts and nonionic surfactants [Elektronische Daten] [H. Asano, A. Murohashi, M. Ueno] The micellar properties of aqueous binary mixed solutions for two systems consisting of sodium cholate (NaC)-octaoxyethylene glycol mono n-decyl ether (C10E8) and sodium glycocholate (NaGC)-C10E8 have been studied on the basis of surface tensions, polarity of the micelle interior and the mean aggregation number. Application of two theoretical treatments, based on regular solution and excess thermodynamic quantities for critical micellar concentration (CMC) data from surface tension curves of two mixed systems showed that the mole fraction of each bile salt in the mixed micelles near the CMC is lower than that of the corresponding prepared mole fraction in the mixed solution. The polarity of the interior suggested that the hydrophobicity of intramicelles increased with the increase of the mole fraction of bile salt in the mixed solution and that the mixed micelles become dramatically more hydrophobic at a mole fraction of 0.68 for NaGC−C10E8 system and 0.75 for NaC−C10E8 system, respectively. This implies that the micelles become richer in the bile salt molecules and the tendency appears strongly for NaGC−C10E8 system due to the strong cohesion between the conjugated glycines in the NaGC molecules. The decrease of aggregation number with the increase of the mole fraction of bile salts shows that the micelles approach those of the single system of each bile salt. This supports the previously mentioned facts. American Oil Chemists' Society (AOCS), 1990 Aggregation number nationallicence excess thermodynamic quantities nationallicence octaoxyethylene glycol mono n-decyl ether nationallicence pyrene fluorescence nationallicence regular solution treatment nationallicence sodium cholate nationallicence sodium glycocholate nationallicence surface tension nationallicence Asano H. Department of Applied Chemistry, Faculty of Science, Science University of Tokyo, 1-3, Kagurazaka, Shinjuku-ku, 162, Tokyo, Japan aut Murohashi A. Department of Applied Chemistry, Faculty of Science, Science University of Tokyo, 1-3, Kagurazaka, Shinjuku-ku, 162, Tokyo, Japan aut Ueno M. Department of Applied Chemistry, Faculty of Science, Science University of Tokyo, 1-3, Kagurazaka, Shinjuku-ku, 162, Tokyo, Japan aut Journal of the American Oil Chemists' Society Springer-Verlag 67/12(1990-12-01), 1002-1007 0003-021X 67:12<1002 1990 67 11746 https://doi.org/10.1007/BF02541866 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02541866 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Asano H. Department of Applied Chemistry, Faculty of Science, Science University of Tokyo, 1-3, Kagurazaka, Shinjuku-ku, 162, Tokyo, Japan aut NATIONALLICENCE 700 1- Murohashi A. Department of Applied Chemistry, Faculty of Science, Science University of Tokyo, 1-3, Kagurazaka, Shinjuku-ku, 162, Tokyo, Japan aut NATIONALLICENCE 700 1- Ueno M. Department of Applied Chemistry, Faculty of Science, Science University of Tokyo, 1-3, Kagurazaka, Shinjuku-ku, 162, Tokyo, Japan aut NATIONALLICENCE 773 0- Journal of the American Oil Chemists' Society Springer-Verlag 67/12(1990-12-01), 1002-1007 0003-021X 67:12<1002 1990 67 11746 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer