| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1411017 | Journal of Molecular Structure | 2010 | 4 Pages |
Abstract
Temperature-dependent infrared (IR) spectra of a Nafion membrane were measured over a temperature range from 30 to 320 °C. The obtained spectra were analyzed using perturbation-correlation moving-window two-dimensional (PCMW2D) correlation spectroscopy and quantum chemical calculations (QCC). Three-step structural changes in Nafion ionomer induced by temperature were revealed. Dehydration of the ionomer is dominant below 60 °C. Protonation of sulfonate group in the side chain terminal occurs around 100 °C. Thermal degradation of the chains starts above 280 °C.
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Authors
Shigeaki Morita, Kuniyuki Kitagawa,