Abstract:Hyperbranched polymers were successfully synthesized by one-pot reversible complexation-mediated polymerization (RCMP) of allyl methacrylate (AMA) in the presence of iodine (I2) and sodium iodide (NaI). The branched structure of the resulted polymers and the process of the polymerization were studied through nuclear magnetic resonance (NMR) and triple detection gel-permeation chromatograph (TD-GPC). The results show that the conversion of AMA reaches as high as 81.9% without gelation. The number-average molecular weight of the resulted polymer is 1.11?104 and the PDI is 6.62. The viscosity and the hydrodynamic radius of the resulted polymer are lower than those of the corresponding linear polymer, suggesting the branched structure of the resulted polymer. The first-order kinetic curve is linear, indicating the “living”/ controlled nature of the polymerization.