INVESTIGATION OF THE STRUCTURE OF MICELLES AND INTERMICELLAR INTERACTION IN AQUEOUS-SOLUTIONS OF ETHOXYLATED DIISONONYLPHENOL BY SMALL-ANGLE NEUTRON-SCATTERING

The results of the investigations of oxyethylated diisononylphenol wit h an ethoxylation degree of 20 (ODNP-20) were presented. ODNP-20 in aq ueous solutions was shown to form double-layer micelles, whose interna l hydrophobic core with a radius of 23 angstrom corresponds to the dou ble length of the iso-nonyl chain. The second iso-nonyl chain and the oxyethyl groups together with the nonyl radicals of the second molecul e form an ordered internal layer of micelles shielded by the oxyethyl chains of the external layer molecules with partial meander structure.