ИСТИНА

The interaction of star-shaped homopolyelectrolytes with the oppositely charged linear homopolyelectrolytes and with the oppositely charged double hydrophilic ionic/nonionic diblock copolymers in aqueous media was studied. In the case the star-shaped homopolyelectrolytes interacting with the oppositely charged linear homopolyelectrolytes, the formation of soluble in aqueous media nanosized complex species with the polymeric component of nonlinear topology playing a lyophilizing part was observed only if the latter was present in the certain base-molar excess. The formed macromolecular coassemblies are considered to have peculiar "core-corona" structure. A hydrophobic core of each of the complex species essentially represents a water-insoluble interpolyelectrolyte complex incorporating the oppositely charged polyelectrolyte components in ca 1 : 1 base molar stoichiometry while a hydrophilic (ionic) corona granting the whole complex species solubility in aqueous media is composed of free (excessive) arms of the star-shaped polyelectrolyte that are not coupled with the oppositely charged linear polyions. In the case the star-shaped homopolyelectrolytes interacting with the oppositely charged linear double hydrophilic ionic/nonionic diblock copolymers, the formation of soluble in aqueous media nanosized complex species was observed at any base-molar stoichiometry of mixtures of the oppositely charged polymeric components. At 1 : 1 base-molar stoichiometry, the formed macromolecular coassemblies are proved to have distinct "core-corona" structure. A hydrophobic core of each of the complex species is a water-insoluble interpolyelectrolyte complex containing the oppositely charged polyelectrolyte components in ca 1 : 1 base-molar stoichiometry while a hydrophilic (nonionic) corona providing solubility of the whole complex species in aqueous media is built from hydrophilic nonionic blocks of the double hydrophilic ionic/nonionic diblock copolymer. The considered above soluble in aqueous media macromolecular coassembies of micellar type based both on the star-shaped homopolyelectrolytes complexed with the oppositely charged linear homopolyelectrolytes and on the star-shaped homopolyelectrolytes complexed with the oppositely charged linear double hydrophilic ionic/nonionic diblock copolymers are thought to be in-demand, e.g., for design of novel nanocontainers and nanoreactors.