Similarities and differences of epoxide, aldehyde and peroxide initiators for Cp2TiCl-catalyzed styrene living radical polymerizations

A comparison of epoxide, aldehyde and peroxide initiators for Cp2TiCl-catalyzed living radical styrene polymerizations was performed by investigating the effect of reagent stoichiometry and temperature on the initiator efficiency and polydispersity. An optimum was observed for [Styrene]/[Initiator]/[Cp2TiCl2]/[Zn] = [50-200]/[1]/[2-3]/[4-6] at 70-90 °C.