Function Design of Polymer Hydrogels Utilizing Precision Radical Polymerization: Self-healing Properties and Thermoresponsive Toughening

Abstract

In order to develop highly functional hydrogel materials, elaborate design and precision construction of network structure are required. To this end, we are focusing on controlled/living radical polymerization techniques not only to synthesize defined precursor polymers but also to give a unique function by reversible activation-deactivation reaction mechanism. In this paper, a feature of living radical polymerization for gel synthesis is briefly described, and our recent results are outlined. In particular, the design of self-healable gel utilizing reversible addition-fragmentation chain transfer (RAFT) polymerization mechanism and amphiphilic conetworks with crosslinked domains capable of unique thermoresponsive swelling behavior and mechanical toughening are presented.