Abstract
Devices based on bi-layer and tri-layer conducting polymer-polyethylene glycol (PEG) composite films of electrochemically synthesized polypyrrole-PEG/non-conducting adhesive polymer and polypyrrole-PEG/non-conducting adhesive polymer/polypyrrole-PEG were constructed. The bending motions of bi-layer and tri-layer composite films were investigated in 1.0 M LiClO4 aqueous solution. The movement rate (rad s−1), consumed electrical energy, consumed electrical charge and mechanical output energy of actuation of the bi-layer and tri-layer composite films both in free or in loading state were studied and compared with those of bi-layer and tri-layer prepared in the absence of PEG. At a given driving potential or driving current, the movement rates of bi-layer and tri-layer composite films in free and loading states are higher than those of bi- and tri-layer films synthesized without PEG respectively. The energy consumed per degree for bending actuation increases with the increase of loading weight and driving potential. The energy conversion efficiency decreases with the increase of driving potential. It was observed that the polypyrrole films prepared at low temperature with the optimized thickness in the presence of PEG plasticizer have shorter response time and longer cycle life than those of prepared without PEG. Study of Fatigue and training in the prepared artificial muscles reveals that the presence of PEG has considerable influence on the response of fabricated muscles.
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Published in Russian in Elektrokhimiya, 2014, Vol. 50, No. 3, pp. 306–313.
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Nateghi, M.R., Negahbanfard, H. & Kavoosi, S. Study of life time and energy conversion efficiency in bi-layer and tri-layer polymer actuators. Russ J Electrochem 50, 274–280 (2014). https://doi.org/10.1134/S1023193513080144
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DOI: https://doi.org/10.1134/S1023193513080144