COMPARATIVE-STUDY OF POLYACRYLOYLACETONE MONOLAYERS AT DICHLOROMETHANE-WATER AND AIR-WATER INTERFACES

The properties of polyacryloylacetone (PAA) monolayers adsorbed at dic hloromethane-water (DCM/W) interfaces were investigated by using the d ynamic pendant drop method and a new rheological approach. The results were compared with those obtained at the air-water (A/W) interface. T he role of the two interfaces on the interfacial organization of enoli c units and the formation of tridimensional structures was discussed. The adsorption kinetics of Cu2+ ions on PAA monolayers leading to meta l-polymer complex formation were followed. The observed large differen ce in the kinetic rates at the two interfaces is probably related to t he different interfacial organization of the enolic units.