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Tudose IV, Mouratis K, Ionescu ON, Romanitan C, Pachiu C, Pricop E, Khomenko VH, Butenko O, Chernysh O, Barsukov VZ, Suchea MP, Koudoumas E. Carbon Allotropes-Based Paints and Their Composite Coatings for Electromagnetic Shielding Applications. NANOMATERIALS 2022; 12:nano12111839. [PMID: 35683694 PMCID: PMC9181905 DOI: 10.3390/nano12111839] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/17/2022] [Accepted: 05/24/2022] [Indexed: 12/04/2022]
Abstract
The present manuscript reports on optimized formulations of alcohol-based conductive paints for electromagnetic interference shielding (EMI), which can ensure compatibility and reduce the visibility of electronic equipment, as a continuation of our previous work in this field, which examined water-based formulations for other applications. Graphite, carbon black, graphene, Fe3O4, Fe ore, and PEDOT:PSS in various ratios and combinations were employed in an alcohol base for developing homogeneous paint-like fluid mixtures that could be easily applied to surfaces with a paintbrush, leading to homogeneous, uniform, opaque layers, drying fast in the air at room temperature; these layers had a reasonably good electrical conductivity and, subsequently, an efficient EMI-shielding performance. Uniform, homogeneous and conductive layers with a thickness of over 1 mm without exfoliations and cracking were prepared with the developed paints, offering an attenuation of up to 50 dB of incoming GHz electromagnetic radiation. The structural and morphological characteristics of the paints, which were studied in detail, indicated that these are not simple physical mixtures of the ingredients but new composite materials. Finally, mechano-climatic and environmental tests on the coatings demonstrated their quality, since temperature, humidity and vibration stressors did not affect them; this result proves that these coatings are suitable for commercial products.
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Affiliation(s)
- Ioan Valentin Tudose
- Center of Materials Technology and Photonics, Hellenic Mediterranean University, 71410 Heraklion, Crete, Greece; (I.V.T.); (K.M.)
- Chemistry Department, University of Crete, 70013 Heraklion, Crete, Greece
| | - Kyriakos Mouratis
- Center of Materials Technology and Photonics, Hellenic Mediterranean University, 71410 Heraklion, Crete, Greece; (I.V.T.); (K.M.)
| | - Octavian Narcis Ionescu
- National Institute for Research and Development in Microtechnologies (IMT-Bucharest), 023573 Bucharest, Romania; (O.N.I.); (C.R.); (C.P.)
- Petroleum and Gas University of Ploiesti, 100680 Ploiesti, Romania;
| | - Cosmin Romanitan
- National Institute for Research and Development in Microtechnologies (IMT-Bucharest), 023573 Bucharest, Romania; (O.N.I.); (C.R.); (C.P.)
| | - Cristina Pachiu
- National Institute for Research and Development in Microtechnologies (IMT-Bucharest), 023573 Bucharest, Romania; (O.N.I.); (C.R.); (C.P.)
| | - Emil Pricop
- Petroleum and Gas University of Ploiesti, 100680 Ploiesti, Romania;
| | - Volodymyr H. Khomenko
- Department of Electrochemical Power Engineering and Chemistry, Kyiv National University of Technologies and Design, 01011 Kyiv, Ukraine; (V.H.K.); (O.B.); (O.C.)
| | - Oksana Butenko
- Department of Electrochemical Power Engineering and Chemistry, Kyiv National University of Technologies and Design, 01011 Kyiv, Ukraine; (V.H.K.); (O.B.); (O.C.)
| | - Oksana Chernysh
- Department of Electrochemical Power Engineering and Chemistry, Kyiv National University of Technologies and Design, 01011 Kyiv, Ukraine; (V.H.K.); (O.B.); (O.C.)
| | - Viacheslav Z. Barsukov
- Department of Electrochemical Power Engineering and Chemistry, Kyiv National University of Technologies and Design, 01011 Kyiv, Ukraine; (V.H.K.); (O.B.); (O.C.)
- Correspondence: (V.Z.B.); or (M.P.S.); (E.K.)
| | - Mirela Petruta Suchea
- Center of Materials Technology and Photonics, Hellenic Mediterranean University, 71410 Heraklion, Crete, Greece; (I.V.T.); (K.M.)
- National Institute for Research and Development in Microtechnologies (IMT-Bucharest), 023573 Bucharest, Romania; (O.N.I.); (C.R.); (C.P.)
- Department of Electrical and Computer Engineering, Hellenic Mediterranean University, 71410 Heraklion, Crete, Greece
- Correspondence: (V.Z.B.); or (M.P.S.); (E.K.)
| | - Emmanouel Koudoumas
- Center of Materials Technology and Photonics, Hellenic Mediterranean University, 71410 Heraklion, Crete, Greece; (I.V.T.); (K.M.)
- Department of Electrical and Computer Engineering, Hellenic Mediterranean University, 71410 Heraklion, Crete, Greece
- Correspondence: (V.Z.B.); or (M.P.S.); (E.K.)
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Martin ES, Sanches AO, Maraschin TG, Souza Basso NR, Paula FR, Malmonge JA. Graphite nanosheet/polyaniline nanocomposites: Effect of in situ polymerization and dopants on the microstructure, thermal, and electrical conduction properties. J Appl Polym Sci 2022. [DOI: 10.1002/app.52363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Eliza Sbrogio Martin
- Universidade Estadual Paulista (UNESP), Faculdade de Engenharia, Câmpus de Ilha Solteira Ilha Solteira Brazil
| | - Alex Otávio Sanches
- Universidade Estadual Paulista (UNESP), Faculdade de Engenharia, Câmpus de Ilha Solteira Ilha Solteira Brazil
| | - Thuany Garcia Maraschin
- Escola Politécnica Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS) Porto Alegre Brazil
| | - Nara Regina Souza Basso
- Escola Politécnica Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS) Porto Alegre Brazil
| | - Fernando Rogério Paula
- Universidade Estadual Paulista (UNESP), Faculdade de Engenharia, Câmpus de Ilha Solteira Ilha Solteira Brazil
| | - José Antonio Malmonge
- Universidade Estadual Paulista (UNESP), Faculdade de Engenharia, Câmpus de Ilha Solteira Ilha Solteira Brazil
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Komaba K, Goto H. Preparation of bagworm silk/polyaniline composite. J Appl Polym Sci 2022. [DOI: 10.1002/app.51791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kyoka Komaba
- Department of Material Science, Faculty of Pure and Applied Sciences University of Tsukuba Tsukuba Japan
| | - Hiromasa Goto
- Department of Material Science, Faculty of Pure and Applied Sciences University of Tsukuba Tsukuba Japan
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Novel Water-Based Paints for Composite Materials Used in Electromagnetic Shielding Applications. NANOMATERIALS 2022; 12:nano12030487. [PMID: 35159833 PMCID: PMC8838246 DOI: 10.3390/nano12030487] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/15/2022] [Accepted: 01/21/2022] [Indexed: 02/05/2023]
Abstract
The development of materials offering electromagnetic interference (EMI) shielding is of significant consideration, since this can help in expanding the lifetime of devices, electromagnetic compatibility, as well as the protection of biological systems. Conductive paints used widely today in electromagnetic interference (EMI) shielding applications are often based on organic solvents that can create safety issues due to the subsequent environment problems. This paper concerned the development of eco-friendly conductive water-based paints for use in EMI-shielding applications. Graphene nanoplatelets, polyaniline emeraldine (PANI) doped with poly(styrene sulfonic acid) (PSS) or HCl or HBr and poly(3,4-ethylenedioxythiophene) poly(styrene sulfonic acid) (PEDOT:PSS) in various ratios were employed in a water base for developing the paints. The target was to develop homogeneous water-based paint-like fluid mixtures easily applied onto surfaces using a paint brush, leading in homogeneous, uniform, opaque layers, draying fast in air at room temperature, and having quite good electrical conductivity that can offer efficient EMI-shielding performance. The results of this parametric trial indicated the optimum compositions leading in paints with optimized properties that can result in uniform, homogeneous, and conductive layers up to a thickness of over 500 μm without deformation and cracking, offering attenuation of up to 60 dBs of incoming GHz electromagnetic radiation. In addition, the structural and morphological characteristics of these paints were studied in detail.
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Zahid M, Anwer Rathore H, Tayyab H, Ahmad Rehan Z, Abdul Rashid I, Lodhi M, Zubair U, Shahid I. Recent developments in textile based polymeric smart sensor for human health monitoring: A review. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2021.103480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Synthesis of Nickel Spinel Ferrites Nanoparticles Coated with Thermally Reduced Graphene Oxide for EMI Shielding in the Microwave, UV, and NIR Regions. Polymers (Basel) 2021; 13:polym13193316. [PMID: 34641132 PMCID: PMC8513002 DOI: 10.3390/polym13193316] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 11/17/2022] Open
Abstract
The co-precipitation and in situ modified Hummers’ method was used to synthesize Nickel Spinal Ferrites (NiFe) nanoparticles and NiFe coated with Thermally Reduced Graphene Oxide (TRGO) (NiFe-TRGO) nanoparticles, respectively. By using polyvinyl chloride (PVC), tetrahydrofuran (THF), and NiFe-TRGO, the nanocomposite film was synthesized using the solution casting technique with a thickness of 0.12–0.13 mm. Improved electromagnetic interference shielding efficiency was obtained in the 0.1–20 GHz frequency range. The initial assessment was done through XRD for the confirmation of the successful fabrication of nanoparticles and DC conductivity. The microstructure was analyzed with scanning electron microscopy. The EMI shielding was observed by incorporating a filler amount varying from 5 wt.% to 40 wt.% in three different frequency regions: microwave region (0.1 to 20 GHz), near-infrared (NIR) (700–2500 nm), and ultraviolet (UV) (200–400 nm). A maximum attenuation of 65 dB was observed with a 40% concentration of NiFe-TRGO in nanocomposite film.
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