hotochemical primary reaction and photoinitiated polymerization of MMA with Benzophenone(BP)/Triethylamine(TEA) in dicetyldimethyl ammonium bromide(DCDAB) vesicle solution were studied in this paper. The kinetic experimental results showed that DCDAB vesicles exhibit a large catalysis on the polymerization

leading to an increase in the polymerization rate by four times which is near to the values catalyzed by the ionic micelles. Except the effect of the conventional high local concentration produced by the solubilization this result also should be attributed to the microenviroment effect of interface layer at DCDAB vesicles

where the reaction takes place. It promotes significantly the photochemical primary reaction of BP/TEA and results in increase in the rates of electron transfer (Kir) and proton transfer (Kh) processes. The polymerization product (PMMA) formed in DCDAB vesicles has a reatively high tacticity and was estimated to be about 70% syndio- and isotactic.