Ahmad, Shahzada and Bohidar, H. B. and Ahmad, Sharif and Agnihotry, S. A. (2006) Role of fumed silica on ion conduction and rheology in nanocomposite polymeric electrolytes. Polymer, 47. pp. 3583-3590. ISSN 0032-3861

PDF - Published Version Restricted to Registered users only Download (272Kb) | Request a copy

Abstract

The electrochemical, rheological, calorimetric, spectroscopic and morphological investigations have been used to examine poly(methyl methacrylate), PMMA based electrolytes dispersed with nano-sized fumed silica (SiO2). The observed ionic conductivity was one of the highest and is of the order similar to mS/cm at ambient temperature which was studied as a function of concentration of fumed silica nano-particles. It was further found that the fumed silica acted as a passive filler and played a predominant role in controlling the rheological properties while ion transport properties were least effected. The differential calorimetry studies revealed single glass transition temperature pointing towards homogeneous nature of the composite polymeric electrolytes (CPEs). At an optimum concentration of fumed silica (2 wt%) the observed maximum conductivity and morphology was attributed to the presence of a strong network structure, while at a higher concentration the elastic behavior was more pronounced which impeded ion transport. This contention was supported by spectroscopic data.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier.
Subjects:	Polymer Science
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	07 Aug 2018 07:35
Last Modified:	07 Aug 2018 07:35
URI:	http://npl.csircentral.net/id/eprint/2542

Actions (login required)

View Item