Kinetics of Radical Copolymerization between α-Methylstyrene and Methyl Methacrylate


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The theoretical treatment of copolymerization with propagation and depopagation is presented in order to estimate r1 r2, and K11 (the equilibrium constant for propagation and depropagation)


in the copolymerization of α-methylstyrene (αMSt: M1) and methyl methacrylate (MMA: M2). The values of r1 r2, and K11 are found to be 0.48, 0.47, and 5.0, respectively. The termination rate


constant in the copolymerization is estimated to be 3.3×107 regardless of monomer feed composition. This means that a φ-factor proposed by Walling is equal to unity.


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