Mixed micelles of cationic surfactants and sodium cholate in water.
Critical micelle concentrations (CMCs) of cationic surfactant (alkyltrimethylammonium bromides, CnTABr, where n = 10, 12, 14, 16 and 18), and a bile salt sodium cholate (NaC) were determined from surface tension, conductance and dye solubilization methods, while of their equimolar mixtures from surface tension and dye solubilization methods. The interaction parameter (beta) obtained from analysis of data, using Rubingh's theory showed strong interaction between NaC and cationic surfactant. Time-resolved fluorescence-quenching results revealed small-sized mixed spherical micelle with aggregation number much less than micelles of cationic surfactant.
Department of Chemistry, South Gujarat University, Surat 395 007, India.
Dharmesh
D
Varade
Vijay
V
Patel
Anita
A
Bahadur
Pratap
P
Bahadur
Martin Swanson
MS
Vethamuthu
D001647:Bile Acids and Salts / Q000737:chemistry; D002412:Cations / Q000737:chemistry*; D002623:Chemistry Techniques, Analytical; D002626:Chemistry, Pharmaceutical / Q000379:methods; D004396:Coloring Agents / Q000737:chemistry; D004305:Dose-Response Relationship, Drug; D008823:Micelles; D008956:Models, Chemical; D020358:Sodium Cholate / Q000737:chemistry*; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry*; D014867:Water / Q000737:chemistry
D001647:Bile Acids and Salts; D002412:Cations; D004396:Coloring Agents; D008823:Micelles; D013501:Surface-Active Agents; D014867:Water; D020358:Sodium Cholate