STUDIES ON ORGANIC PEROXIDE-DITERTIARY AMINE INITIATION SYSTEMS
有机过氧化物与二元叔胺引发体系的研究

Radical polymerization of methyl methacrylate (MMA) initiated with organic pero-xide-ditertiary amine binary systems was studied in this paper. In order to study the effects of organic peroxide and amine respectively, benzoyl peroxide (BPO), lauroyl peroxide (LPO), t-butyl hydroperoxide (TBH), and t-butyl peroxybenzoate (TBPB) were used as organic peroxide component, and aromatic ditertiary amine 4,4'-tetramethyldia-minodiphenylmethane (TMDAPM), and aliphatic ditertiary amine tetramethylethylene-diamine (TMEDA) were used as amine component. It was found that in the bulk poly-merization of MMA using organuc peroxide-TMDAPM binary initiation systems,the ef-fect of organic peroxide on the polymerization rate of MMA Rp was in the following order:BPO>LPO>TBH>TBPB. However,in the organic peroxide-TMEDA binary systems,the order of Rp was LPO-TMEDA>TBH-TMEDA,and BPO-TMEDA,TBPB-TMEDA system could not initiate MMA polymerization. The values of Ea,overall activation energa of polymerization,of MMA initiated with organic peroxide-TMDAPM systems were determined. According to the kinetic studies of MMA polymerization initiated with BPO-TMDAPM,LPO-TMDAPM system,the foll-owing equations were obtained.