(Arene)tricarbonylchromium(0) complexes in the synthesis of
metal-containing polymers based on vinyl monomers
Polimery 2001, No 3, 178
In analogy to azoisobutyronitrile (AIBN), (styrene or p-methylstyrene or toluene)tricarbonylchromium(0) (STC, PMSTC, TTC) complexes were studied as (co)initiators in radical homopolymerization (30 °C) of vinyl monomers (Table 1). STC and PMSTC were also used as comonomers and copolymerized with methyl methacrylate (MMA) (Tables 2, 3) and butyl acrylate (BA) (Table 2). Di-tert-butylperoxytriphenylantimony (DPA), the most effective low-T initiator of vinyl radical polymerization, was used as initiator (Tables 2, 3) and coinitiator together with STC to copolymerize MMA and BA with STC and PMSTC. The copolymerization data were used to evaluate relative reactivity ratios for the monomers (Table 2). Initial homopolymerization rates were evaluated (Table 1). Chain propagation steps were studied and an original chain propagation model is suggested in compliance with complex-radical polymerization principles.
Keywords: metal-containing monomer, metal-containing polymer, (styrene)tricarbonylchromium(0), acrylic monomers, radical polymerization, chain propagation model