Journal
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
Volume 62, Issue 2, Pages 61-67Publisher
TAYLOR & FRANCIS AS
DOI: 10.1080/00914037.2011.617341
Keywords
Conductivity studies; differential scanning calorimetry; dynamic mechanical analysis; nanocomposite gel electrolyte; polymer gel electrolytes
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This paper reports the dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), and ionic conductivity studies on nanosized Al2O3(aluminium oxide) filled PVA:NH4SCN:DMSO polymer composite dried gel electrolytes prepared by the wet chemistry route. Better mechanical stability and thermal behavior are noticed in the composite system. Multiple relaxation peaks seen in tangent loss measurements (in DMA studies) have been suitably correlated. Enhancement in ionic conductivity has been noticed with an optimum value of 4.02x103 Scm1 for 4wt% nano Al2O3 filled composite electrolytes. Temperature dependence of ionic conductivity shows a combination of Arrhenius and VTF (Vogel-Tamman-Fulcher) behavior.
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