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Spin probe ESR studies of $PEG_{x}LiClO_{4}$ polymer electrolyte systems

Bhat, SN and Sharma, A and Rao, SS and Bhat, SV (2004) Spin probe ESR studies of $PEG_{x}LiClO_{4}$ polymer electrolyte systems. In: Ionics, 10 (2). pp. 139-141.

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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 PEG(46)LiClO(4), temperature dependence of correlation time is found. The glass transition temperature T-g is estimated to be -51 degreesC from the measurement of T-50G the temperature at which the extrema separation 2A(ZZ) becomes 50G and is found to be close to that measured using DSC (-51.7 degreesC). T-g for pure PEG-2000, which could not be measured from DSC because of its high crystallinity, is determined to be -72 degreesC by spin probe ESR.

Item Type: Journal Article
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Additional Information: Copyright of this article belongs to Institution of Ionics.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 19 Dec 2008 15:33
Last Modified: 05 Mar 2011 06:48
URI: http://eprints.iisc.ernet.in/id/eprint/17296

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