Binesh, Nader ; Bhat, S. V. (1998) VTF to arrhenius crossover in temperature dependence of conductivity in (PEG) xNH4CIO4 polymer electrolyte Journal of Polymer Science Part B: Polymer Physics, 36 (7). pp. 1201-1209. ISSN 0887-6266
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Official URL: http://www3.interscience.wiley.com/journal/36887/a...
Related URL: http://dx.doi.org/10.1002/(SICI)1099-0488(199805)
Abstract
We have studied the temperature variation of conductivity and 1H NMR linewidth of (PEG)xNH4ClO4 (x = 20, 30, 46, 100, 200, &1000) polymer electrolyte systems. The temperature dependence of the conductivity shows two distinct behaviors, the low temperature VTF dependence crossing over to Arrhenius dependence at higher temperatures. The departure from the VTF behavior is found to be composition dependent. NMR spectra indicate the presence of large fractions of crystalline regions that start to melt around the crossover temperature. We understand the deviation from the VTF behavior as a consequence of this crystalline to elastomer transition.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons, Inc. |
| Keywords: | Polymer Electrolytes; NMR; Conductivity;Glasses;Arrhenius and VTF Dependences |
| ID Code: | 2848 |
| Deposited On: | 09 Oct 2010 05:42 |
| Last Modified: | 23 May 2011 06:42 |
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