High conductivity ionic liquid- nafion mat composites for high speed ionic polymer transducers

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dc.contributor.author Akle, Barbar
dc.contributor.author Leo, Donald J.
dc.contributor.author Nah, Changwoon
dc.contributor.author Kader, Abdul M.
dc.date.accessioned 2018-01-22T13:43:00Z
dc.date.available 2018-01-22T13:43:00Z
dc.date.copyright 2005 en_US
dc.date.issued 2018-01-22
dc.identifier.uri http://hdl.handle.net/10725/6931
dc.description.abstract Ionomeric polymer transducers consist of an ion-exchange membrane plated with conductive metal layers on the outer surfaces. Such materials are known to generate large bending strain (> 9% is possible) at low applied voltages (typically less than 5 V). The main disadvantage of ionomer–ionic liquid transducers is the slow speed of response. The speed of response in such actuators has been correlated to the ionic liquid content and the conductivity of the membrane. To increase the conductivity of the transducers a Nafion™ mat is hydrated with 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (EMI-Tf) ionic liquids and high surface area RuO2 electrodes are attached using the Direct Assembly Process (DAP). The Nafion™ mat is prepared from homogenous solution electrospinning. The solution is prepared by mixing 1 wt % of polyethylene oxide solution in methanol (PEO, Mol. wt 3×106) to 5 wt % Nafion 1100 solution.. The syringe needle is connected to a 15kV power supply and is placed 15cm away from the collecting drum. The measured conductivities of water hydrated Nafion electro-spun fibers are 16.8 mS/cm, which are lower than the nominal 110 mS/cm that of H+ Nafion membranes. The uptake is measured to be around 250 %wt compared to 58 %wt obtained in Nafion films. The ionic conductivity of 110 %wt swollen ionic liquids-Nafion mat composite is computed to be 0.9 mS/cm compared to 0.3 mS/cm in ionic liquid-Nafion membrane composite. The speed of response in actuators with an ionic liquid- Nafion™ mat is 1.34 %/s compared to 0.88 %/s for that in ionic liquid Nafion™ film transducers. en_US
dc.language.iso en en_US
dc.title High conductivity ionic liquid- nafion mat composites for high speed ionic polymer transducers en_US
dc.type Conference Paper / Proceeding en_US
dc.author.school SOE en_US
dc.author.idnumber 200700940 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.keywords Sensor en_US
dc.keywords Fiber en_US
dc.keywords Electronic structure en_US
dc.identifier.doi https://doi.org/10.1557/PROC-0889-W07-06 en_US
dc.identifier.ctation Akle, B., Leo, D. J., Nah, C., & Kader, A. M. (2005). High Conductivity Ionic Liquid-Nafion Mat Composites for High Speed Ionic Polymer Transducers. MRS Online Proceedings Library Archive, 889. en_US
dc.author.email barbar.akle@lau.edu.lb en_US
dc.conference.title Symposium W – Electroresponsive Polymers and Their Applications en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://www.cambridge.org/core/journals/mrs-online-proceedings-library-archive/article/high-conductivity-ionic-liquid-nafion-mat-composites-for-high-speed-ionic-polymer-transducers/25C43F99F178AD1ADA5035D2B4E9FB13 en_US
dc.volume 2005 en_US
dc.author.affiliation Lebanese American University en_US

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