Dr., S K PATEL and Dr., R B PATEL and Dr., A AWADHIA and Navin, Chand and Dr., S L AGRAWA (2007) Role of polyvinyl alcohol in the conductivity behaviour of polyethylene glycol-based composite gel electrolytes. Indian Academy of Sciences, 69. pp. 465-475.

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Abstract

An attempt has been made in the present work to combine gel and composite polymer electrolyte routes together to form a composite polymeric gel electrolyte that is expected to possess high ionic conductivity with good mechanical integrity. Polyethylene\ glycol (PEG) based composite gel electrolytes using polyvinyl alcohol (PVA) as guest polymer have been synthesized with 1 molar solution of ammonium thiocyanate (NH4SCN) in dimethyl sulphoxide (DMSO) and electrically characterized. The ionic conductivity measurements indicate that PEG:PVA:NH4SCN-based composite gel electrolytes are superior (σmax = 5.7×10 −2 S cm −1) to pristine electrolytes (PEG :NH4SCN system) and conductivity variation with filler concentration remains within an order of magnitude. The observed conductivity maxima have been correlated to PEG:PVA:NH4SCN- and PVA:NH4SCN-type complexes. Temperature dependence of conductivity profiles exhibits Arrhenius behaviour in low temperature regime followed by VTF character at higher temperature. Keywords. Polymer blend; gels

Item Type:	Article
Subjects:	Lightweight Materials > Metal Matrix Composites
Divisions:	UNSPECIFIED
Depositing User:	Mr. B.K. Prasad
Date Deposited:	20 Aug 2013 13:42
Last Modified:	05 Mar 2014 08:56
URI:	http://ampri.csircentral.net/id/eprint/430

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