Abstract
AbstractPolymerization of methyl methacrylate (MMA) with the binary initiator system cobalt‐ocene (Co(C5H5)2)/bis(ethyl acetoacetato)copper(II)(Cu(eacac)2), was studied kinetically at 25°C in acetonitrile. The relationship between yield and molecular weight of the resulting poly(MMA) was suggestive of a living polymerization character in this system. The synthesis of block copolymers of MMA with styrene (St) was attempted by adding St as the second monomer to the polymerization system of MMA. The block copolymer was formed in a yield of 20% when MMA was polymerized for 1 day, while the yield went up to 80% when the MMA polymerization was carried out for 3 days. The resulting block copolymer was characterized by IR spectroscopy and gel‐permeation chromatography.
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