graft copolymers

In this paper a new approach to the controlled synthesis of amphiphilic graft copolymers is proposed. The approach consists in the conduction of simultaneous or serial-parallel heterophase grafting polymerization of monomers, different by their polarity, at the interface of phases under conditions of their localization in the separated phases. The stabilizing properties of the obtained copolymers with hydrophilic and hydrophobic side chains for direct and reverse systems are investigated.

Dextran-graft-Polyacrylamide copolymers (D-g-PAA) with a polysaccharide backbone having different molecular weights (Mw = 20 000 and Mw = 70 000) and with various number of PAA-grafts per one Dextran macromolecule have been synthesized. Light scattering and viscometry investigations have shown that the internal structure of D-g-PAA copolymers depends upon the distance between PAA-grafts.