Bibliographic Details
| Title: |
Enhanced control and stability of polypyrrole electromechanical actuators |
| Authors: |
Spinks, Geoffrey M.1 geoff_spinks@uow.edu.au, Xi, Binbin1, Zhou, Dezhi1, Truong, Van-Tan2, Wallace, Gordon G.1 |
| Source: |
Synthetic Metals. Feb2004, Vol. 140 Issue 2/3, p273. 8p. |
| Subjects: |
Pyrroles, Actuators, Oxidation, Polymers |
| Abstract: |
The practical application of polypyrrole (PPy) actuators requires a stable strain response and a high degree of reproducibility from sample to sample. The use of symmetrical voltage cycling to control the actuation of polypyrrole is shown to lead to a slow net oxidation of the polymer after several tens of cycles. The result is a slow deterioration in the actuation strain. The use of current pulsing reduces this problem and gives a more stable strain response. Current pulsing in combination with an ionic-liquid (IL) electrolyte allowed a strain of 3% to be achieved repeatably for many different samples for at least 100 cycles. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
