Poly(vinyl ester) Block Copolymers Synthesized by Reversible Addition−Fragmentation Chain Transfer Polymerizations

Homopolymerizations and block copolymerizations of vinyl acetate (VAc), vinyl pivalate (VPv), and vinyl benzoate (VBz) by reversible addition−fragmentation chain transfer (RAFT) polymerization have been studied. Polymerizations of VAc initiated with 2,2′-azobis(isobutyronitrile) (AIBN) at 60 °C using two different xanthate RAFT agents C2H5OC(═S)SR (R = −CH(CH3)CO2C2H5 (1) and −CH(CH3)O2CC(CH3)3 (2)) were examined to elucidate the dependence of...