The effects of morpholine (MP)

N-methyl morpholine (NMMP)

and N-ethyl morpholine (NEMP) on methyl methacrylate polymerization initiated by benzoyl peroxide (BPO)

lauroyl peroxide (LPO)

t-butyl hydroperoxide (TBH)

and t-butyl pero-xybenzoate (TBPB) respectively have been studied. It was found that in the polymerization using BPO initiator

the presence of MP decreased the polymerization rate RP

however

the NMMP NBMP promoted the polymerization

and the order of RP was BPO-NMMP > LPO-NMMP > TBH-NMMP > TBPB-NMMP. The activation energy of polymerization and the polymerzation rate equation are determined.