Tuning Electro-Magnetic Interference Shielding Efficiency of Customized Polyurethane Composite Foams Taking Advantage of rGO/Fe<sub>3</sub>O<sub>4</sub> Hybrid Nanocomposites
Electromagnetic interference (EMI) has been recognized as a new sort of pollution and can be considered as the direct interference of electromagnetic waves among electronic equipment that frequently affects their typical efficiency. As a result, shielding the electronics from this interfering radiat...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/16/2805 |
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| author | Hussein Oraby Hesham Ramzy Tantawy Miguel A. Correa-Duarte Mohammad Darwish Amir Elsaidy Ibrahim Naeem Magdy H. Senna |
| author_facet | Hussein Oraby Hesham Ramzy Tantawy Miguel A. Correa-Duarte Mohammad Darwish Amir Elsaidy Ibrahim Naeem Magdy H. Senna |
| author_sort | Hussein Oraby |
| collection | DOAJ |
| description | Electromagnetic interference (EMI) has been recognized as a new sort of pollution and can be considered as the direct interference of electromagnetic waves among electronic equipment that frequently affects their typical efficiency. As a result, shielding the electronics from this interfering radiation has been addressed as critical issue of great interest. In this study, different hybrid nanocomposites consisting of magnetite nanoparticles (Fe<sub>3</sub>O<sub>4</sub>) and reduced graphene oxide (rGO) as (conductive/magnetic) fillers, taking into account different rGO mass ratios, were synthesized and characterized by XRD, Raman spectroscopy, TEM and their magnetic properties were assessed via VSM. The acquired fillers were encapsulated in the polyurethane foam matrix with different loading percentages (wt%) to evaluate their role in EMI shielding. Moreover, their structure, morphology, and thermal stability were investigated by SEM, FTIR, and TGA, respectively. In addition, the impact of filler loading on their final mechanical properties was determined. The obtained results revealed that the Fe<sub>3</sub>O<sub>4</sub>@rGO composites displayed superparamagnetic behavior and acceptable electrical conductivity value. The performance assessment of the conducting Fe<sub>3</sub>O<sub>4</sub>@rGO/PU composite foams in EMI shielding efficiency (SE) was investigated at the X-band (8–12) GHz, and interestingly, an optimized value of SE −33 dBw was achieved with Fe<sub>3</sub>O<sub>4</sub>@rGO at a 80:20 wt% ratio and 35 wt% filler loading in the final effective PU matrix. Thus, this study sheds light on a novel optimization strategy for electromagnetic shielding, taking into account conducting new materials with variable filler loading, composition ratio, and mechanical properties in such a way as to open the door for achieving a remarkable SE. |
| first_indexed | 2024-03-09T09:50:56Z |
| format | Article |
| id | doaj.art-6157e517a4074cdebbdf8ad6d8ab96c7 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T09:50:56Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-6157e517a4074cdebbdf8ad6d8ab96c72023-12-02T00:06:12ZengMDPI AGNanomaterials2079-49912022-08-011216280510.3390/nano12162805Tuning Electro-Magnetic Interference Shielding Efficiency of Customized Polyurethane Composite Foams Taking Advantage of rGO/Fe<sub>3</sub>O<sub>4</sub> Hybrid NanocompositesHussein Oraby0Hesham Ramzy Tantawy1Miguel A. Correa-Duarte2Mohammad Darwish3Amir Elsaidy4Ibrahim Naeem5Magdy H. Senna6Department of Chemical Engineering, Military Technical College, Cairo 1111, EgyptDepartment of Chemical Engineering, Military Technical College, Cairo 1111, EgyptCentro de Investigacions Biomedicas (CINBIO), Universidade de Vigo, 36310 Vigo, SpainDepartment of Radar, Military Technical College, Cairo 4393010, EgyptDepartment of Chemical Engineering, Military Technical College, Cairo 1111, EgyptDepartment of Chemical Engineering, Military Technical College, Cairo 1111, EgyptRadiation Chemistry Department, National Center for Radiation Research and Technology, Atomic Energy Authority, Cairo 11762, EgyptElectromagnetic interference (EMI) has been recognized as a new sort of pollution and can be considered as the direct interference of electromagnetic waves among electronic equipment that frequently affects their typical efficiency. As a result, shielding the electronics from this interfering radiation has been addressed as critical issue of great interest. In this study, different hybrid nanocomposites consisting of magnetite nanoparticles (Fe<sub>3</sub>O<sub>4</sub>) and reduced graphene oxide (rGO) as (conductive/magnetic) fillers, taking into account different rGO mass ratios, were synthesized and characterized by XRD, Raman spectroscopy, TEM and their magnetic properties were assessed via VSM. The acquired fillers were encapsulated in the polyurethane foam matrix with different loading percentages (wt%) to evaluate their role in EMI shielding. Moreover, their structure, morphology, and thermal stability were investigated by SEM, FTIR, and TGA, respectively. In addition, the impact of filler loading on their final mechanical properties was determined. The obtained results revealed that the Fe<sub>3</sub>O<sub>4</sub>@rGO composites displayed superparamagnetic behavior and acceptable electrical conductivity value. The performance assessment of the conducting Fe<sub>3</sub>O<sub>4</sub>@rGO/PU composite foams in EMI shielding efficiency (SE) was investigated at the X-band (8–12) GHz, and interestingly, an optimized value of SE −33 dBw was achieved with Fe<sub>3</sub>O<sub>4</sub>@rGO at a 80:20 wt% ratio and 35 wt% filler loading in the final effective PU matrix. Thus, this study sheds light on a novel optimization strategy for electromagnetic shielding, taking into account conducting new materials with variable filler loading, composition ratio, and mechanical properties in such a way as to open the door for achieving a remarkable SE.https://www.mdpi.com/2079-4991/12/16/2805radiation interferenceshieldingpolyurethane foammagnetite decorated rGOmechanical optimization |
| spellingShingle | Hussein Oraby Hesham Ramzy Tantawy Miguel A. Correa-Duarte Mohammad Darwish Amir Elsaidy Ibrahim Naeem Magdy H. Senna Tuning Electro-Magnetic Interference Shielding Efficiency of Customized Polyurethane Composite Foams Taking Advantage of rGO/Fe<sub>3</sub>O<sub>4</sub> Hybrid Nanocomposites Nanomaterials radiation interference shielding polyurethane foam magnetite decorated rGO mechanical optimization |
| title | Tuning Electro-Magnetic Interference Shielding Efficiency of Customized Polyurethane Composite Foams Taking Advantage of rGO/Fe<sub>3</sub>O<sub>4</sub> Hybrid Nanocomposites |
| title_full | Tuning Electro-Magnetic Interference Shielding Efficiency of Customized Polyurethane Composite Foams Taking Advantage of rGO/Fe<sub>3</sub>O<sub>4</sub> Hybrid Nanocomposites |
| title_fullStr | Tuning Electro-Magnetic Interference Shielding Efficiency of Customized Polyurethane Composite Foams Taking Advantage of rGO/Fe<sub>3</sub>O<sub>4</sub> Hybrid Nanocomposites |
| title_full_unstemmed | Tuning Electro-Magnetic Interference Shielding Efficiency of Customized Polyurethane Composite Foams Taking Advantage of rGO/Fe<sub>3</sub>O<sub>4</sub> Hybrid Nanocomposites |
| title_short | Tuning Electro-Magnetic Interference Shielding Efficiency of Customized Polyurethane Composite Foams Taking Advantage of rGO/Fe<sub>3</sub>O<sub>4</sub> Hybrid Nanocomposites |
| title_sort | tuning electro magnetic interference shielding efficiency of customized polyurethane composite foams taking advantage of rgo fe sub 3 sub o sub 4 sub hybrid nanocomposites |
| topic | radiation interference shielding polyurethane foam magnetite decorated rGO mechanical optimization |
| url | https://www.mdpi.com/2079-4991/12/16/2805 |
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