Aqueous sodium oleate–sodium dehydrocholate mixtures at low concentration

摘要: The aqueous mixed system sodium dehydrocholate (NaDHC)–sodium oleate (NaOL) was studied by several methods to determine the influence of hydrophobic structure both surfactants in micellization and formation monolayer adsorbed at air–water interface. molecular area critical micelle concentration pure surfactant solutions suggests that chain folded allow double bond middle molecule remain contact with water, NaDHC situated its plane laying parallel water surface, allowing three carbonyl groups hydrocarbon backbone form hydrogen bonds water. interaction repulsive some molecules must move away less hydrophilic from (double NaOL, NaDHC). micelles strongly attractive, showing a preferential composition roughly equimolar. hydrolysis augmented comparison systems, which could be explained assuming existence more core. degree ionization below micelles, thus indicating high surface charge density.