Journal
ORGANIC ELECTRONICS
Volume 15, Issue 11, Pages 2982-2987Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2014.08.036
Keywords
Ionic electroactive polymers; Electromechanical actuators; Ionic liquids; Functional polymers; Polymer actuators
Funding
- Health Research Initiative and Presidential Initiative for Interdisciplinary Research at Iowa State University
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We have investigated influence of ionic liquid concentration on the electromechanical response of ionic electroactive polymer actuators. Actuators were fabricated from ionomeric membrane and doped with different concentrations of 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ionic liquid. Samples were investigated for their electromechanical and electrochemical characteristics; and it was observed that the maximum electromechanical strain of approximately 1.4% is achieved at 22 wt% ionic liquid content. Increasing ionic liquid concentration results in saturation of the electrode-ionomer interface and formation of ionic double/multi layers, which in turn result an inward accumulation of ions; hence, generate strain in an undesired direction that deteriorates the electromechanical response of the actuator. (C) 2014 Elsevier B.V. All rights reserved.
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