Bhat, Shrivalli N. ; Sharma, Ajay ; Rao, S. S. ; Bhat, S. V. (2004) Spin probe ESR studies of PEGxLiCIO4 polymer electrolyte systems Ionics, 10 (1-2). pp. 139-141. ISSN 0947-7047
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Official URL: http://www.springerlink.com/content/32313710x57062...
Related URL: http://dx.doi.org/10.1007/BF02410323
Abstract
The technique of Electron Spin Resonance (ESR) is shown to be useful in the study of dynamics of solid polymer electrolytes (SPE). Through the ESR of the nitroxide radical (2,2,6,6-tetramethyl-1-piperidine-1-oxyl; TEMPO) dispersed in the SPE PEG46LiClO4 temperature dependence of correlation time is found. The glass transition temperature Tg is estimated to be -51 °C from the measurement of T50G, the temperature at which the extrema separation 2AZZ becomes 50G and is found to be close to that measured using DSC (-51.7° C). Tg for pure PEG-2000, which could not be measured from DSC because of its high crystallinity, is determined to be -72°C by spin probe ESR.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Springer-Verlag. |
| ID Code: | 2870 |
| Deposited On: | 09 Oct 2010 05:40 |
| Last Modified: | 23 May 2011 06:09 |
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