Electromagnetic wave absorption properties of ternary poly(vinylidene fluoride)/magnetite nanocomposites with carbon nanotubes and graphene. Issue 3 (4th January 2016)

• Record Type: Journal Article
• Authors: Tsonos, C.; Soin, N.; Tomara, G.; Yang, B.; Psarras, G. C.; Kanapitsas, A.; Siores, E.
• Is Part Of: RSC advances. Volume 6:Issue 3(2016)
• Page Start: 1919
• Page End: 1924
• Publication Date: 2016-01-04
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra24956b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Ternary nanocomposite systems of PVDF/Fe3 O4 /CNT and PVDF/Fe3 O4 /GN, prepared with twin screw compounding method, exhibit enhanced microwave absorption properties. Abstract : Ternary nanocomposite systems of poly(vinylidene fluoride)/magnetite/carbon nanotube (PVDF/Fe3 O4 /CNT) and poly(vinylidene fluoride)/magnetite/graphene (PVDF/Fe3 O4 /GN), were prepared using high shear twin screw compounding followed by compression moulding. The electromagnetic (EM) microwave absorption properties of the nanocomposites were investigated in the frequency range of 3–10 GHz. PVDF/Fe3 O4 /CNT samples with the thickness d = 0.7 mm present a minimum reflection loss (RL) of −28.8 dB at 5.6 GHz, while all the RL values in the measurement frequency range 3–10 GHz are lower than −10 dB. PVDF/Fe3 O4 /GN with a thickness of 0.9 mm, presents a minimum RL of −22.6 dB at 5.4 GHz, while all the RL values in the measurement frequency range 3–10 GHz are lower than −10 dB as well. The excellent microwave absorption properties of both nanocomposites, in terms of minimum RL value and broad absorption bandwidth, are mainly due to the enhanced magnetic losses. The results indicate that the ternary nanocomposites studied here, can be used as an attractive candidate for EM absorption materials in diverse fields of various technological applications, not only in the frequency range 3–10 GHz, but also at frequencies <3 GHz for PVDF/Fe3 O4 /CNT and >10 GHz for PVDF/Fe3 O4 /GN with a realistic thickness of close to 1 mm.