Microwave absorbing properties of a thermally reduced graphene oxide/nitrile butadiene rubber composite

Reduced graphene oxide (RGO) with a layered and porous structure was synthesized by thermal exfoliation of graphite oxide. Synthesized RGO is very light weight and flaky. The formation of RGO was studied using Fourier transform infrared and Raman spectroscopies, X-ray diffraction and scanning electr...

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Bibliographic Details
Published in:Carbon (New York) 2012-05, Vol.50 (6), p.2202-2208
Main Authors: Singh, Vivek K., Shukla, Anuj, Patra, Manoj K., Saini, Lokesh, Jani, Raj K., Vadera, Sampat R., Kumar, Narendra
Format: Article
Language:English
Subjects:
Butadiene
Carbon
Chemistry
Colloidal state and disperse state
Complex permittivity
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fullerenes and related materials
diamonds, graphite
General and physical chemistry
Graphene
Materials science
Nitriles
Noise levels
Oxides
Physics
Porous materials
Rubber
Specific materials
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Summary:Reduced graphene oxide (RGO) with a layered and porous structure was synthesized by thermal exfoliation of graphite oxide. Synthesized RGO is very light weight and flaky. The formation of RGO was studied using Fourier transform infrared and Raman spectroscopies, X-ray diffraction and scanning electron microscopy. Composites were prepared by dispersing 2%, 4% and 10% by weight of the synthesized RGO into nitrile butadiene rubber (NBR) matrix. Microwave absorption properties of RGO/NBR composites were investigated by measuring their complex permittivity and permeability by using waveguide method. Simulation studies show that 10wt.% of graphene oxide in NBR matrix exhibits high values of reflection loss (>10dB) over a wide frequency range 7.5–12GHz and maximum loss is 57dB at 9.6GHz at a thickness of 3mm.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2012.01.033