|180. Pergushov, D.V.; Remizova, E.V.; Zezin, A.B.; Müller, A.H.E.; Kabanov, V.A.: Novel water-soluble micellar interpolyelectrolyte complexes, J. Phys. Chem. C. 107, 8093 (2003)|
The interaction of polyisobutylene-block-poly(sodium methacrylate) diblock copolymer micelles with a strong cationic polyelectrolyte, poly(N-ethyl-4-vinylpyridinium bromide), in alk. media was examd. by means of turbidimetry, anal. ultracentrifugation, and fluorescence spectroscopy. It was shown that the diblock copolymer micelles and the cationic polyelectrolyte, taken at charge ratios Z = [+]/[-] not exceeding a certain crit. value ZM < 1, form peculiar water-sol. micellar complex species, each contg. a two-phase hydrophobic nucleus and a hydrophilic corona. The nucleus consists of a polyisobutylene core and a shell assembled from the fragments of the water-insol. interpolyelectrolyte complex. The corona is formed by the excess fragments of poly(sodium methacrylate) blocks not involved in the complexation with poly(N-ethyl-4-vinylpyridinium bromide).