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Proceedings Paper

Mixed-ion linear actuation of PPy and PEDOT in propylene carbonate-triflate electrolytes
Author(s): Rudolf Kiefer; Paul A. Kilmartin; Graham A. Bowmaker; Ralph P. Cooney; Jadranka Travas-Sejdic
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Paper Abstract

Investigations of the actuation properties of free standing PPy and PEDOT films in a propylene carbonate-triflate electrolyte (PC/TBACF3SO3) under isotonic (constant load) conditions are presented in this work. The PPy film showed mixed ion movement during charging and discharging in cyclic voltammetric and chronoamperometric experiments. At a potential of -1.0 V the maximum strain was in the range of 1-2 % whereas at the anodic potential of +1.0 V strains in the range of 3-4 % were observed. Cyclic voltammetry experiments at higher scan rates to 10 mV/s led to a decrease in the anodic strain and an increase in the cathodic strain before it declined at higher scan rates. The free-standing PEDOT films showed mainly cathodic actuation at the potential -1.0 V and the size of actuation was again dependent upon the scan rate. Cation movement is discussed in terms of the immobilisation of CF3SO3- anions during polymerisation. Extended potential step experiments showed good actuation and low creep in the potential range between 0.0 and +1.0 V. The surface morphology (SEM) showed an open porous structure for PEDOT in contrast to the smooth morphology of PPy.

Paper Details

Date Published: 4 April 2007
PDF: 13 pages
Proc. SPIE 6524, Electroactive Polymer Actuators and Devices (EAPAD) 2007, 65240U (4 April 2007); doi: 10.1117/12.715089
Show Author Affiliations
Rudolf Kiefer, Univ. of Auckland (New Zealand)
Paul A. Kilmartin, Univ. of Auckland (New Zealand)
Graham A. Bowmaker, Univ. of Auckland (New Zealand)
Ralph P. Cooney, Univ. of Auckland (New Zealand)
Jadranka Travas-Sejdic, Univ. of Auckland (New Zealand)

Published in SPIE Proceedings Vol. 6524:
Electroactive Polymer Actuators and Devices (EAPAD) 2007
Yoseph Bar-Cohen, Editor(s)

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