Micellization and Adsolubilization of Amphilic Invertible Polyesters

Abstract

Using surface tension measurements, solubilization, and fluorescence spectroscopy, polyesters based on aliphatic dicarboxylic acids and PEG-1000 have been shown to form monomolecular micelles in aqueous solutions at the concentrations of 10-7-10-4 %. With increasing concentration, the monomolecular micelles have been revealed to aggregate to afford polymolecular micelles. The amphiphilic polyesters have been demonstrated to possess invertibility and thus respond to the change in a medium polarity as well as adsorb at hydrophilic and hydrophobized dispersed silica surface. Using 2-naphthol, the adsorbed amphiphilic polyester layers have been shown to solubilize sparingly watersoluble organic compounds.