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Low-temperature behaviour of water in nafion membranes

✍ Scribed by N.G. Boyle; J.M.D. Coey; V.J. McBrierty

Publisher: Elsevier Science
Year: 1982
Tongue: English
Weight: 269 KB
Volume: 86
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(82)83108-4

No coin nor oath required. For personal study only.

✦ Synopsis

Proton NMR measurements of TI, T 1 p and T 2 in "Nation" perfluorosulphonate membranes, together with neutronscattering and dielectric data, show that the aqueous phase in Nation solidifies at a glass transformation whose temperature Tg is 168 K in water-saturated acid membranes. Tg is higher for the salt lorms. M6ssbauer measurements on Eu 3+ Nation confirm that the cations are present in an aqueous phase with Tg ~-220 K.

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