Synthesis of substituted polymethylenes from acenaphthylene by radical polymerization and copolymerization

摘要

AbstractRadical polymerization of acenaphthylene (Ace) as a 1,2‐disubstituted ethylene was investigated. It was found that the polymerization rate (Rp) was expressed as follows:Rp=kAce1.0AIBN0.68, and that the overall activation energy was 113 kJ/mol for polymerization with 2,2'‐azobisisobutyronitrile (AIBN) in benzene at 50–70°C. Poly(Ace) obtained was characterized by NMR spectroscopy and GPC. Some substituted copolymethylenes were also prepared by radical copolymerization of Ace with other 1,2‐disubstituted ethylenes, that is, maleic anhydride, diisopropyl fumarate, andN‐cyclohexylmaleimide. The monomer reactivity ratios were determined from comonomer–copolymer compos