ИСТИНА

The interaction of micelles generated in aqueous solutions of polyisobutylene-block-poly(sodium methacrylate) diblock copolymers with strong cationic polyelectrolytes, poly(N-ethyl-4-vinylpyridinium bromide)s, has been examined by means of turbidimetry, analytical ultracentrifugation, fluorescence spectroscopy (with the use of pyrene as a polarity probe), small-angle neutron scattering, and dynamic light scattering. The obtained results suggest that the products of this interaction represent novel water-soluble ″core-shell-corona″ (″onion″-like) polymeric architectures with a polyisobutylene core surrounded by a shell assembled from the coupled oppositely charged polyelectrolyte fragments and an ionic corona built up from fragments of the ionic blocks not involved in interpolyelectrolyte complexation. Properties and behavior of such micellar interpolyelectrolyte complexes in aqueous salt solutions, in particular, their dissociation at relatively high ionic strength of the surrounding media, have been studied.