| 초록 |
Ionic polymer actuators have attracted attention towards a range of biomimetic devices owing to beneficial characteristics of softness, lightness, and large strain. In particular, the ionic polymer actuators have a unique feature of low-voltage operation, could reduce power consumption. Unfortunately, the actuators have faced the fatal limitation in achieving fast response time. In the present study, we report a new polymer actuator based on single-conducting block copolymers, demonstrating superfast response time. The materials employed were self-assembled sulfonated block copolymers doped with imidazole as single ion-conducting polymers, which showed very low ionic conductivity. The addition of zwitterions resulted in not only increased conductivity by orders of magnitude but also increased dielectric constant of polymer layers. The actuators based on zwitterion-containing single-ion conducting block copolymers were able to move a few millimeters within tens of milliseconds under 1V. |
