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    The rate of isothermal hydration of polyperfluorosulfonic acid membranes

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    Article (382.3Kb)
    Erratum (19.97Kb)
    Issue Date
    1998-05-27
    Author
    Van Nguyen, Trung
    Vanderborgh, Nicholas
    Publisher
    ELSEVIER SCIENCE BV
    Format
    20458 bytes

    391559 bytes
    Type
    Article
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    Abstract
    Water transport rates through polyperfluorosulfonic acid membranes at relatively low water content (close to the fuel cell failure mode) were investigated using dynamic thermogravimetry. A model was developed to describe water transport within the membrane during the dynamic thermogravimetry experiment. Using the model, the experimental data, and a nonlinear regression technique, values for the effective diffusion coefficient of water in the Dow Chemical Company's experimental membrane samples of the same equivalent weight but of two different thickness, 10.16 µm and 17.78 µm, were obtained for temperatures of 60oC, 80oC, and 90oC. Results show that the effective diffusion coefficient of water in the membrane increases with water content and temperature. Values for the partition coefficient of water in these membranes at these temperatures are determined and found to be in close agreement with published values. Finally, rehydration of polyperfluorosulfonic acid membranes is found to be controlled by both the gas/solid interface and the diffusion of water into the inner structure of the membrane.
    URI
    http://hdl.handle.net/1808/296
    DOI
    https://doi.org/10.1016/S0376-7388(98)00030-1
    Collections
    • Chemical & Petroleum Engineering Scholarly Works [173]
    Citation
    Van Nguyen, T; Vanderborgh, N. The rate of isothermal hydration of polyperfluorosulfonic acid membranes . JOURNAL OF MEMBRANE SCIENCE. May 27 1998. 143:235-248

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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