Investigation on dielectric relaxation Of PMMA-grafted natural rubber incorporated with LiCF3SO3
Document Type
Article
Publication Date
1-1-2012
Abstract
Natural rubber (NR) grafted with 30 wt% poly(methyl methacrylate) (PMMA) and designated as MG30 has been added with varying amounts of LiCF3SO3. X-ray diffraction (XRD) shows the samples to be amorphous. Fourier transform infrared (FTIR) spectroscopy indicates complexation between the cation of the salt and the oxygen atom of the C-O and -COO- groups of MG30. From electrochemical impedance spectroscopy (EIS), MG30 with 30 wt% LiCF3SO3 salt exhibits the highest ambient conductivity of 1.69 x 10(-6) S cm(-1) and lowest activation energy of 0.24 eV. The dielectric behavior has been analysed using dielectric permittivity (epsilon'), dissipation factor (tan delta) and dielectric modulus (M*) of the samples. The dielectric constant of pure MG30 has been estimated to be similar to 1.86. (C) 2012 Elsevier B.V. All rights reserved.
Keywords
mg30, xrd, ftir, conductivity, cyclic voltammetry activation energy, dielectric, polymer electrolytes, mechanical-properties, methyl-methacrylate, ionic-conductivity, lithium batteries, ftir, latex, spectra, styrene, oxide
Divisions
PHYSICS
Publication Title
Physica B: Condensed Matter
Volume
407
Issue
13
Publisher
Elsevier
Additional Information
Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA