Improvement of ionic gel’s thermal stability, stretchable and self-healable properties through an ionic side chain
발표자
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초록
내용
Recently, demands for stretchable, biocompatible and wearable devices are increased. In this situation, many researchers tried to synthesize stretchable materials. Ionic gel has intrinsic stretchability via crosslinking between polymer chains and transparency. Therefore, stretchable ionic gel research is on-going. General ionic gels have ions inside polymer networks without interaction. Ions mobile in polymer networks by thermal energy. In this result, ions interact with the other ions and formed ion bulks. However, in this literature, polymer chains with ionic side chains form polymer networks. Thus, thermal stability was improved up to 100℃. In addition, physical crosslinking between ionic side chains gives 2636% stretchability and 98.3% self-healing in 3 hr to ionic gel. Thermal sensor and actuator with this ionic gel were fabricated. These devices showed high stability and maintained almost initial performance despite repeated bending, stretching and damage by external force.