ИСТИНА

RAFT copolymerization of acrylic acid and N-isopropyl acrylamide was studied in 1,4-dioxane in the presence of dibenzyl trithiocarbonate as RAFT agent at various monomer compositions. In all the cases copolymerization proceeded via the living mechanism and resulted in the formation of narrow dispersed copolymers. Synthesized random copolymers as well as triblock copolymer poly(acylic acid)-block-poly(N-isopropyl acrylamide)-block-poly(acrylic acid) were used as polymeric RAFT agents in butyl acrylate polymerization in DMF. Block copolymer dispersions in water were obtained. The study by dynamic light scattering revealed that these dispersions are characterized by narrow particle size distribution. The average hydrodynamic radius of the particles was governed by changing pH and the temperature.