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Radical polymerization of methyl methacrylate(MMA) initiated with organic hydro-peroxide-amine system was studied.t-Butyl hydroperoxide(TBH) and cumene hydroper-oxide(CHP) were used as organic hydroperoxide components,and aromatic tertiary amines,such as N.N-dimethyl aniline(DMA) and its p-substituted derivatives,i.e.N.N-di-me(hyl-p-toluidine(DMT),p-nitro-N,N-dimethyl aniline(NDMA) and p-dimelhyla-mino benzaldehyde(DMAB),were used as amine components.It was found that although the aromaic amine with electron-donating group would enhance,while electron-withdrawing group would reduce,the polymerization rate Rp ane their differences were not so great and all the Rp values were in the same order of magnitude.The values of overall activation enegry,Ea,of MMA polymerization initiated with TBH-amine and CHP-amine systems were determined in the range of 50-57kJ/mole for TBH-amine systems and of 39-62kJ/mole for CHP-amine systems,respectively.Furthemore,the reaction mechanism and kinetics of polymerization of MM
Radical polymerization of methyl methacrylate (MMA) initiated with organic hydro-peroxide-amine system was studied. T-Butyl hydroperoxide (TBH) and cumene hydroper- oxide (CHP) were used as organic hydroperoxide components, and aromatic tertiary amines, such as NN -dimethyl aniline (DMA) and its p-substituted derivatives, ieNN-di-me (DMT), p-nitro-N, N-dimethyl aniline (NDMA) and p- dimelhyla-mino benzaldehyde ), used as amine components. It was found that although the aromaic amine with electron-donating group would enhance, while electron-withdrawing group would reduce, the polymerization rate Rp ane their differences were not so great and all the Rp values were in the same order of magnitude.The values of overall activation enegry, Ea, of MMA polymerization initiated with TBH-amine and CHP-amine systems were determined in the range of 50-57 kJ / mole for TBH-amine systems and of 39-62 kJ / mole for CHP-amine systems, respectively. Furthemore, the reaction mechanism and kinetics of po lymerization of MM