Investigation of the physics of transduction in nafion / Ionic liquid composite membranes

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dc.contributor.author Akle, Barbar
dc.contributor.author Leo, Donald
dc.contributor.author Bennett, Matthew
dc.date.accessioned 2018-01-22T10:39:42Z
dc.date.available 2018-01-22T10:39:42Z
dc.date.copyright 2011 en_US
dc.identifier.uri http://hdl.handle.net/10725/6925
dc.description.abstract Ionomeric polymer actuators based on Nafion membranes exhibit large bending motion (1%) under the application of small voltages (1-5 V). Actuation in these materials is believed to arise from the field-induced motion of mobile charges when a voltage is applied. In order for this charge motion to occur, the material must be swollen with a diluent, typically water. However, dehydration of the water limits the lifetime of these actuators in non-aqueous environments. Recently, highly stable ionic liquids have been demonstrated as viable diluents for these actuators. In the current paper, the physics of transduction in these ionic liquid-swollen Nafion membranes are investigated. Small-angle X-ray scattering reveals that the structure and properties of the ionic liquid have a strong influence on the morphology of the composites. Infrared spectroscopy is used to probe the ion associations within the films and shows that the ionic liquids are able to effectively mobilize the counterions of the Nafion membrane. Nuclear magnetic resonance spectroscopy is also used to investigate the composites and reveals that the mobility of the counterions increases as the content of ionic liquid within the membrane is increased. The results of these characterizations are compared to an experimental investigation of transduction in Nafion / ionic liquid composites to form an interpretation of the mechanisms of actuation. This comparison reveals that the counterions of the Nafion membrane are the primary charge carriers and that it is the motion of these mobile charges that gives rise to the actuation behavior of the films. en_US
dc.language.iso en en_US
dc.publisher ASME en_US
dc.title Investigation of the physics of transduction in nafion / Ionic liquid composite membranes 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 Ionic conductor en_US
dc.keywords Polymer en_US
dc.keywords Sensor en_US
dc.identifier.doi https://doi.org/10.1557/PROC-0889-W06-10-V07-10 en_US
dc.identifier.ctation Bennett, M., Akle, B., & Leo, D. (2005). Investigation of the Physics of Transduction in Nafion/Ionic Liquid Composite Membranes. 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/div-classtitleinvestigation-of-the-physics-of-transduction-in-nafion-ionic-liquid-composite-membranesdiv/81D2375E09F771792BDEE61E192A9BE2 en_US
dc.volume 889 en_US
dc.author.affiliation Lebanese American University en_US

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