An Investigation on Self-polymerization and Co-polymerization Properties of Lead Methacrylate

Lead methacrylate ( Pb (MAA) 2 ) was synthesized through the reaction of lead oxide and methacrylic acid and characterized by FT-IR spectroscopy, XRD ， DSC. The non-isothermal and isothermal analysis were used to study the kinetics of self-polymerization of Pb (MAA) 2 . The monomer reactivity ratios of Pb (MMA) 2 /MMA, Pb(MAA) 2 /St and Pb(MAA) 2 /BA were calculated by K-T method. The results showed that Pb (MMA) 2 could be induced to self-polymerization initiated by thermal and free radical and the activation energy of polymerization was 150.10kJ/mol in solid state and 74.99kJ/mol in aqueous solution. The rate of polymerization under low conversion was governed by the expression at 70 ℃ : Rp=K[M] 1.02 [I] 0.37 . The values of r 1 ( Pb (MAA) 2 ) and r 2 ( MMA ) were 3.767 and 0.166, r 1 ( Pb (MAA) 2 ) and r 2 (St) were 26.856 and 0.294, r 1 ( Pb (MAA) 2 ) and r 2 ( BA ) were 10.822 and 0.089.