Farukh, M. and Singh, Avanish Pratap and Dhawan, S. K. (2015) Enhanced electromagnetic shielding behavior of multi-walled carbon nanotube entrenched poly (3,4-ethylenedioxythiophene) nanocomposites. Composites Science and Technology, 114. pp. 90-102. ISSN 0266-3538

PDF - Published Version Restricted to Registered users only Download (2855Kb) | Request a copy

Abstract

Exceptionally high electromagnetic shielding behavior shown by composites of poly (3,4-ethylenedioxythiophene)/multi-walled carbon nanotube (PCNT) which showed maximum shielding attenuation of 58 dB in the Ku-band. The electron micrographs confirm the wrapping of poly (3,4-ethylenedioxthiophene) (PEDOT) over multiwalled carbon nanotubes (MWCNTs) resulting in strong interfacial, electronic and space charge polarizations. The EMI shielding results showed that shielding by PCNT composites are mainly due to shielding effectiveness by absorption rather than shielding attenuation by reflection. Complex permittivity and permeability of composites have been calculated using scattering parameters (S-11 and S-21) based on theoretical calculations given in the Nicolson-Ross-Weir method. The composites were further characterized by Raman spectroscopy, TGA, XRD, and FTIR.

Item Type:	Article
Uncontrolled Keywords:	Carbon nanotubes Polymer-matrix composites (PMCs) Transmission electron microscopy (TEM) Raman spectroscopy EMI shielding
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	22 Sep 2016 07:02
Last Modified:	22 Sep 2016 07:02
URI:	http://npl.csircentral.net/id/eprint/1804

Actions (login required)

View Item