We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Influence of imidazoliumbased ionic liquids on the performance of ionic polymer conductor network composite actuators.
- Authors
Sheng Liu; Wenjuan Liu; Yang Liu; JunHong Lin; Xin Zhou; Michael J Janik
- Abstract
We investigated the influence of ionic liquids ILs on the electromechanical performance of ionic polymer conductor network composite IPCNC actuators. Four imidazolium ILs with two cations of different sizes, i.e. 1ethyl3methylimidazolium EMI and 1butyl3methylimidazolium BMI, and two anions of different sizes, i.e. tetrafluoroborate BF4− and trifluoromethanesulfonate Tf−, were used. The IPCNC actuators were fabricated using a direct assembly method with RuO2Nafion®nanocomposite as the electrode layers. The experimental results reveal that the actuator strain response time is nearly one order of magnitude shorter than the charging time. The IPCNCs with EMITf− exhibit the highest capacitance and the fastest response in both actuation and electrical charging as capacitors. In contrast, the IPCNCs with EMIBF4− display the slowest charging time and lowest value of capacitance as capacitors. The IPCNCs with BMIBF4− show the slowest response time. Furthermore, although the ILs used have a marked effect on the capacitances of the IPCNCs, using different ILs does not cause much change in the maximum strain of these IPCNCs. Consequently, the IPCNC actuators with EMIBF4− show the highest electromechanical conversion efficiency while those with EMITf− have the lowest electromechanical efficiency because of the highest capacitance and largest input electrical energy. The experimental results indicate that the two oppositely charged ions contribute in opposite manner to the strain response and hence the observed shorter actuation response time is likely caused by the strain cancellation effect between the cations and anions. Copyright © 2010 Society of Chemical Industry
- Subjects
IONIC liquids; POLYMERS; COMPOSITE materials; ACTUATORS; IMIDAZOLES; CATIONS
- Publication
Polymer International, 2010, Vol 59, Issue 3, p321
- ISSN
0959-8103
- Publication type
Article
- DOI
10.1002/pi.2771