The effect of ionic membrane properties on the performance of ionic polymer-metal composite (IPMC) actuator
- The effect of ionic membrane properties on the performance of ionic polymer-metal composite (IPMC) actuator
- 박종혁; Jae Young Jho; Man Jae Han; Jang Yeol Lee; Hyuck Sik Wang
- IPMC; artificial muscle; soft actuator; electroactive polymer; ion-exchange membrane
- Issue Date
- Proc. SPIE Electroactive Polymer Actuators and Devices
- VOL 5759-505
- On purpose to overcome the limit of conventional ionic polymer-metal composites (IPMC) using the commercial ionic membranes, novel IPMCs with radiation-grafted ion-exchange membranes were prepared. Poly(vinylidenefluoride-co-hexafluoropropylene) (PVDF-co-HFP) and poly(ethylene-co-tetrafluoroethylene) (ETFE) were radiation-grafted with styrene, and then sulfonated. The properties of the membranes were modulated by controlling the amount of polystyrene sulfonic acid (PSSA) groups in the membranes. The amount of PSSA groups were tuned by controlling the total absorbed dose of γ-ray. The membranes were characterized by measuring the water-uptake, the ion-exchange capacity, and the ion conductivity. The performance of the IPMCs using these membranes were analyzed with laser displacement meter. They exhibited much larger bending displacement in comparison with Nafion-based IPMC. With increasing the amount of PSSA groups, the maximum displacement and the bending speed were remarkably increased. The results made sure that the property of ion-exchange membrane was the key element affecting the actuation performance of IPMC.
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