ADSORPTION OF EXTRACTANTS AND MODIFIERS IN MIXED BINARY MODEL SYSTEMS

The interfacial activity of 2-hydroxy-5-t-butylbenzophenone (E)-oxime (HBBO), two model alpha-acyloin oximes: 9-hydroxy-8-hesadecanone oxime (HHO) and 13-hydroxy-12-tetracosanone oxime (HTO), and a model modifi er such as p-tertbutylphenol (BPh) is investigated at toluene/water in terface, at 21 degrees C. Interfacial tension isotherms for individual compounds as well as for binary mixed solutions are obtained. In part icular, it is shown that in all mixed systems co-adsorption is observe d. Composition of mixed adsorption monolayer is affected mainly by mut ual efficiency of adsorption of surface active components and composit ion of the bulk solution phase.