Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7214107 | Composites Science and Technology | 2018 | 32 Pages |
Abstract
In this paper, PEDOT/reduced graphene oxide (RGO)/PbTiO3 nanocomposites have been synthesized using facile insitu chemical oxidative polymerization method. The synthesis method leads to the formation of core-shell structured nanocomposites containing PbTiO3 as primary filler and RGO as secondary filler in PEDOT matrix. The core-shell morphology of the composites has been confirmed using transmission electron microscope with average particle size 20-30â¯nm observed for PbTiO3. The incorporation of RGO and PbTiO3 in the PEDOT matrix has been confirmed by X-ray diffraction. A systematic study on electromagnetic shielding properties and the effect of PbTiO3 concentration on different properties has been carried out. The ferro-electric PbTiO3 with RGO induced dielectric loss in the composites, whereas, PEDOT establish a conducting network over RGO layer and PbTiO3 nanoparticles that improve electromagnetic shielding properties by increasing the dielectric loss. As a result, an enhanced electromagnetic shielding effectiveness value of 51.94â¯dB (>99.999% attenuation) has been achieved in 12.4-18â¯GHz frequency range. The nanocomposites were further characterized using Fourier transmission infrared spectroscopy and thermal gravimetric analysis.
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Authors
Jasvir Dalal, Sushma Lather, Anjli Gupta, Sajjan Dahiya, A.S. Maan, Kuldeep Singh, S.K. Dhawan, Anil Ohlan,