Styrene solubilization in micelles of dodecyltrimethylammonium hydroxide

The solubilization of styrene molecules in aqueous dodeciltrime-thylammonium Hydroside (DTAOH) solution was studied by UV-Vis spectroscopy, In short, fully ionized DTAOH aggregates the styrene molecules in the micelle double layer, oriented with their vinyl group to the micelle core and the aryl ring to the intermicellar solution, At increased surfactant concentration, when the aggregates incorporate counterions in their Stern layer, the orientation is maintained, but styrene molecules gradually penetrate into the micelle core as the micelle size and degree of counterion union increased, until they were completely immersed in the hydrocarbon core of rod-like micelles.