MICELLES AND MICROEMULSIONS. SELF-DIFFUSION STUDIES OF IONIC SURFACTANT SELF-ASSOCIATION, OF THE CLOUDING PHENOMENON OF NONIONIC SURFACTANTS AND OF THE STRUCTURE OF MICROEMULSIONS

摘要: Some recent results regarding the structure and dynamics of micellar solutions microemulsions are reviewed, with special emphasis on multicomponent NMR self-diffusion investigations. For ionic surfactants, coefficients micelles, surfactant ions, counterions water molecules give information micelle size, free concentration, counterion binding hydration. For nonionic surfactants poly(ethyleneoxide) variety, clouding phenomenon was investigated. It is found that micelles change shape size changes in temperature concentration there a small dehydration increasing temperature. For microemulsions, studies direct insight into presence - or hydrocarbon continuous regions. Depending microemulsion constituents wide variation possible between pronounced water-in-oil oil-in-water microemulsions. For co-surfactant-type varies considerably alcohol chain length.