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Proceedings Paper

Polypyrrole with polyethylene oxide: linear actuation in organic and aqueous electrolytes
Author(s): Roshan Khadka; Zane Zondaka; Jadranka Travas-Sejdic; Tarmo Tamm; Rudolf Kiefer
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Paper Abstract

Embedding polyethylene oxide (PEO) in polypyrrole doped with dodecylbenzenesulfonate (PPy/PEO-DBS) leads to increase linear actuation due to improved ionic conductivity. In this research our goal is to investigate the effect of solvent exchange from aqueous (aq) to propylene carbonate (PC) using same concentration of electrolyte bis(trifluoromethane) sulfonamide lithium (LiTFSI). As previously observed for the case of PPy/DBS films, the actuation direction of PPy/PEO-DBS changed from purely cation-driven in (aqueous) LiTFSI-aq to purely anion driven in (propylene carbonate) LiTFSI-PC. Cyclic voltammetry driven electro-chemo-mechanical-deformation (ECMD) measurements showed that the strain in LiTFSI-PC was more than double than that of aqueous electrolyte consuming only half of the charge density. The diffusion coefficients were determined from the chronoamperometric measurements with higher values found in LiTFSI-PC. Energy dispersive X-Ray spectroscopy and scanning electronic microscopy measurements were performed to characterize the PPy/PEO-DBS films.

Paper Details

Date Published: 27 March 2018
PDF: 9 pages
Proc. SPIE 10594, Electroactive Polymer Actuators and Devices (EAPAD) XX, 105941W (27 March 2018); doi: 10.1117/12.2300145
Show Author Affiliations
Roshan Khadka, Univ. of Auckland (New Zealand)
Zane Zondaka, Univ. of Tartu (Estonia)
Jadranka Travas-Sejdic, Univ. of Auckland (New Zealand)
Tarmo Tamm, Univ. of Tartu (Estonia)
Rudolf Kiefer, Ton Duc Thang Univ. (Viet Nam)

Published in SPIE Proceedings Vol. 10594:
Electroactive Polymer Actuators and Devices (EAPAD) XX
Yoseph Bar-Cohen, Editor(s)

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