| 초록 |
Films or coatings of conducting polymers (CPs) can be easily switched by the application of small voltage and current to change volume during their electrochemical redox process. In particular, polypyrrole (PPy) has been studied most extensively because of its high electrical conductivity and good environmental stability under ambient condition. In this work, we have studied a new CP actuator, fully polymeric, assembled with two PPy film electrodes and a solid polymer electrolyte (SPE), polyurethane/Mg(ClO4)2. Chemically synthesized PPy was characterized by SEM, XRD and 4-probe technique. The chemical polymerization of PPy by immersion in pyrrole monomer aqueous solution and oxidant aqueous solution is an adequate method to prepare PU/PPy composite film as actuator. The morphology and ionic conductivity of these electrolytes were studied by using DSC, FT-IR and AC impedance measurements. And, the displacement of all actuators was discussed in connection with the properties of SPE and PPy. All the results obtained in this work show the feasibility of electrochemomechanical devices based on PPy and SPE film able to work in air. |
