Abstract
The copolymerization of styrene and acrylic acid and the copolymerization of styrene and tert-butyl acrylate that are mediated by benzyl dithiobenzoate and dibenzyl trithiocarbonate as reversible addition-fragmentation chain-transfer agents are studied for the first time. It is shown that the copolymerization of these monomer pairs mediated by reversible addition-fragmentation chain-transfer agents occurs via the pseudoliving radical mechanism and is characterized by a linear increase in the number-average molecular weight with an increase in the total conversion of the monomers and by the formation of narrowly dispersed copolymers. Variation in the conditions of the radical copolymerization of styrene and acrylic acid (in the type of reversible addition-fragmentation chain-transfer agent and the addition of a polar solvent) and of the radical copolymerization of styrene and tert-butyl acrylate (in the composition of the monomer mixture) makes it possible to control the chain microstructures of the copolymers.
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