Few‐layer‐graphene/polycarbonate nanocomposites as dielectric and conducting material

Authors:
Publisher website
Google Scholar
Abstract
An attempt is taken to develop a flexible and light weight polycarbonate‐based nanocomposite system which could be successfully used as a dielectric material below percolation and as conducting material beyond percolation. The nanocomposite system has been prepared by solution mixing method in which few layer graphene was incorporated as conductive filler. X‐ray diffractometry, Raman spectroscopy, transmission electron microscopy, scanning electron microscopy techniques were employed for characterization studies. The dielectric constant and conductivity were evaluated using precision impedance analyzer. Percolation threshold has been observed to occur at 3.5 wt % of few layer graphene. Dielectric constant of the nanocomposite system, in the smearing region, has been found to increase from ∼3.3 (without filler) to ∼70 (at 5 wt % FLG) with a dissipation factor of 0.07. The conductivity of the system was increased from 10−9 S/cm without FLG to 10−2 S/cm with 7 wt % of few layer graphene. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42443.

This publication has 27 references indexed in Scilit: