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Matzui LY, Syvolozhskyi OA, Vovchenko LL, Yakovenko OS, Len TA, Ischenko OV, Vakaliuk AV, Oliynyk VV, Zagorodnii VV, Naumenko A, Cojocari M, Fedorov G, Kuzhir P. Segregated Conductive Polymer Composite with Fe 3O 4-Decorated Graphite Nanoparticles for Microwave Shielding. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2808. [PMID: 38930178 PMCID: PMC11204437 DOI: 10.3390/ma17122808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 05/20/2024] [Accepted: 06/05/2024] [Indexed: 06/28/2024]
Abstract
Graphite nanoplatelets (GNPs)-the segregated ultra-high molecular weight polyethylene (UHMWPE)-based composites with hybrid filler-decorated with Fe3O4 were developed. Using X-ray diffraction and scanning electron microscopy, it was shown that the decorated component has the shape of separate granules, or their clusters were distributed evenly over the GNPs surface. The individual Fe3O4 nanoparticles are predominantly rounded, with diameters of approximately 20-60 nm. The use of GNPs/Fe3O4 as a filler leads to significant decreases in the percolation limit φc, 0.97 vol% vs. 0.56 vol% for GNPs/UHMWPE- and (GNPs/Fe3O4)/UHMWPE segregated composite material (SCM), respectively. Modification of the GNP surface with Fe3O4 leads to an essential improvement in the electromagnetic interference shielding due to enhanced microwave absorption in the 26-37 GHz frequency range in its turn by abundant surface functional groups and lattice defects of GNPs/Fe3O4 nanoparticles.
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Affiliation(s)
- Ludmila Yu. Matzui
- Facultiy of Physics, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 64/13, 01601 Kyiv, Ukraine; (O.A.S.); (L.L.V.); (O.S.Y.); (T.A.L.); (V.V.O.); (A.N.)
| | - Oleksii A. Syvolozhskyi
- Facultiy of Physics, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 64/13, 01601 Kyiv, Ukraine; (O.A.S.); (L.L.V.); (O.S.Y.); (T.A.L.); (V.V.O.); (A.N.)
| | - Ludmila L. Vovchenko
- Facultiy of Physics, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 64/13, 01601 Kyiv, Ukraine; (O.A.S.); (L.L.V.); (O.S.Y.); (T.A.L.); (V.V.O.); (A.N.)
| | - Olena S. Yakovenko
- Facultiy of Physics, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 64/13, 01601 Kyiv, Ukraine; (O.A.S.); (L.L.V.); (O.S.Y.); (T.A.L.); (V.V.O.); (A.N.)
| | - Tetyana A. Len
- Facultiy of Physics, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 64/13, 01601 Kyiv, Ukraine; (O.A.S.); (L.L.V.); (O.S.Y.); (T.A.L.); (V.V.O.); (A.N.)
| | - Olena V. Ischenko
- Facultiy of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 64/13, 01601 Kyiv, Ukraine; (O.V.I.); (A.V.V.)
| | - Anna V. Vakaliuk
- Facultiy of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 64/13, 01601 Kyiv, Ukraine; (O.V.I.); (A.V.V.)
| | - Victor V. Oliynyk
- Facultiy of Physics, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 64/13, 01601 Kyiv, Ukraine; (O.A.S.); (L.L.V.); (O.S.Y.); (T.A.L.); (V.V.O.); (A.N.)
| | - Volodymyr V. Zagorodnii
- Facultiy of Physics, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 64/13, 01601 Kyiv, Ukraine; (O.A.S.); (L.L.V.); (O.S.Y.); (T.A.L.); (V.V.O.); (A.N.)
| | - Antonina Naumenko
- Facultiy of Physics, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 64/13, 01601 Kyiv, Ukraine; (O.A.S.); (L.L.V.); (O.S.Y.); (T.A.L.); (V.V.O.); (A.N.)
| | - Maria Cojocari
- Department of Physics and Mathematics, University of Eastern Finland, Yliopistokatu 7, FI-80101 Joensuu, Finland; (M.C.); (G.F.); (P.K.)
| | - Georgy Fedorov
- Department of Physics and Mathematics, University of Eastern Finland, Yliopistokatu 7, FI-80101 Joensuu, Finland; (M.C.); (G.F.); (P.K.)
| | - Polina Kuzhir
- Department of Physics and Mathematics, University of Eastern Finland, Yliopistokatu 7, FI-80101 Joensuu, Finland; (M.C.); (G.F.); (P.K.)
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Curing, Properties and EMI Absorption Shielding of Rubber Composites Based on Ferrites and Carbon Fibres. Polymers (Basel) 2023; 15:polym15040857. [PMID: 36850141 PMCID: PMC9959415 DOI: 10.3390/polym15040857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/02/2023] [Accepted: 02/07/2023] [Indexed: 02/11/2023] Open
Abstract
In this work, magnetic soft ferrites, namely manganese-zinc ferrite, nickel-zinc ferrite and combinations of both fillers, were incorporated into acrylonitrile-butadiene rubber to fabricate composite materials. The total content of ferrites was kept constant-300 phr. The second series of composites was fabricated with a similar composition. Moreover, carbon fibres were incorporated into rubber compounds in constant amount-25 phr. The work was focused on investigation of the fillers on absorption shieling performance of the composites, which was investigated within the frequency range 1-6 GHz. Then, the physical-mechanical properties of the composites were evaluated. The achieved results demonstrated that the absorption shielding efficiency of both composite types increased with increasing proportion of nickel-zinc ferrite, which suggests that nickel-zinc ferrite demonstrated better absorption shielding potential. Higher electrical conductivity and higher permittivity of composites filled with carbon fibres and ferrites resulted in their lower absorption shielding performance. Simultaneously, they absorbed electromagnetic radiation at lower frequencies. On the other hand, carbon fibres reinforced the rubber matrix, and subsequent improvement in physical-mechanical properties was recorded.
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