Abstract
In this study, we report the synthesis of 3-, 4-, and 6-arm star poly(vinylbenzyl methylimidazolium chloride) via reversible addition-fragmentation chain transfer (RAFT) polymerization with a core-first approach, which results in uniform number and length of polymer arms. The effect of initial radical initiator concentration and number of functional groups per multifunctional RAFT agent on polymerization reaction kinetics was systematically investigated. Increasing the initial radical initiator concentration resulted in faster monomer conversion, while decreasing the number of functional groups per multifunctional RAFT agent resulted in a decrease in the initial rate retardation in reaction kinetics. This work demonstrates a facile method for synthesizing ion-containing star polymers, specifically star poly(ionic liquids) or star PILs, with uniform number and length of polymer arms, where star PILs may be a promising new material for electrochemical energy devices due to property enhancements associated with their star polymer architecture.
Published Version
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