Molecular interactions during adsorption and micellization in ionic surfactant solutions: 2. Surface properties and micellization in aqueous solutions of the salts of higher aliphatic amines

A complex study of colloidochemical properties of cationic surfactant solut ions (salts of C-12-C-18 aliphatic amines) was preformed, Characteristics o f the adsorption layer and micellar phase were determined from the equilibr ium surface tension isotherms. Correlation dependences of the works of adso rption and micellization on the differential heats of adsorption were estab lished. The character of the interaction of hydrophobic radicals and the ra tio between ionic and molecular forms of amine in a micellar phase were det ermined by H-1 NMR spectroscopy. Correlation between H-1 NMR spectroscopic parameters and the heats of lateral and electrostatic interactions determin ed in the kinetic model of adsorption was established.