Abstract
Living polymerization consists of the initiation and propagation reactions and includes neither chain transfer nor termination reaction. Therefore, it is easy to elucidate polymerization mechanism and possible to strictly control molecular weight and molecular weight distribution (MWD) of polymer by using living polymerization. The molecular weight of the formed polymer is proportional to the monomer/initiator ratio. The MWD becomes narrow when the initiation reaction is faster than propagation and the propagating species is stable. Therefore, the initiating species that have structures similar to the propagating species are preferred. Living polymerization enables the synthesis of well-defined polymers such as block copolymers, end-functionalized polymers, and star polymers.
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