Virginia Tech
    • Log in
    View Item 
    •   VTechWorks Home
    • Student Works
    • Journal of Undergraduate Materials Research
    • View Item
    •   VTechWorks Home
    • Student Works
    • Journal of Undergraduate Materials Research
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    The Effect of Viscosity and Ion Size on the Transduction of Ionic Polymer Metal Composite Actuators

    Thumbnail
    View/Open
    v1-copley.pdf (307.3Kb)
    Downloads: 156
    v1-copley.zip (731.1Kb)
    Downloads: 4
    Date
    2005-09-22
    Author
    Copley, Lisa
    Hubbard, Elizabeth
    Maisano, Adam
    Metadata
    Show full item record
    Abstract
    Ionic polymer membranes plated with platinum and gold serve as actuators when a small potential is applied. However, the water used to hydrate the membrane evaporates during use, decreasing actuator performance. Ionic liquids are being considered as a replacement for water because of their low vapor pressure. Prior studies show that the large ion size and high viscosity of ionic liquids slow the response time of the polymer membrane when a voltage is applied. This study examines the relationships of ion size and viscosity to transduction by modeling ionic liquids with inexpensive salts of varying ion size and glycerol/water solutions. Based on these results several ionic liquids were selected and tested for use as membrane sol­ vents. This study includes frequency response, step response, and impedance tests of samples impregnated with Li+, K+, Cs+, TMA+, TEA+, and TBA+. Actuators solvated in solutions with a viscosity similar to 70–80 wt. % glycerol solutions (18–46 cP) and cation size similar to that of TMA+ (0.347 nm) appear to yield the best results. When used as the membrane solvent, the ionic liquid 1-ethyl-3-methyl imidazolium trifluoromethanesulfonate (IL #3) resulted in the greatest strain per charge per area of the three ionic liquids tested in this study.
    URI
    http://hdl.handle.net/10919/90368
    Collections
    • Journal of Undergraduate Materials Research [61]

    If you believe that any material in VTechWorks should be removed, please see our policy and procedure for Requesting that Material be Amended or Removed. All takedown requests will be promptly acknowledged and investigated.

    Virginia Tech | University Libraries | Contact Us
     

     

    VTechWorks

    AboutPoliciesHelp

    Browse

    All of VTechWorksCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    Log inRegister

    Statistics

    View Usage Statistics

    If you believe that any material in VTechWorks should be removed, please see our policy and procedure for Requesting that Material be Amended or Removed. All takedown requests will be promptly acknowledged and investigated.

    Virginia Tech | University Libraries | Contact Us