Effect of loading ZnNiCrFe2O4 nanoparticles on structural and microwave absorption properties of polyaniline nanocomposites

Elahi, Asmat; Shakoor, Abdul; Irfan, Muhammad; Niaz, N. A.; Awan, M. S.

doi:10.1007/s10854-016-4999-y

Cited by 20 publications

(3 citation statements)

References 20 publications

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“…4 Cr 0 . 1 Fe 2 O 4 presented slightly lower RL value (better attenuation) than neat PAni, but a significant increase of the bandwidth with attenuation higher than 90% [95]. According to the examples presented in Table 3, outstanding performance in terms of minimum RL and also the frequency range with EM attenuation superior to 90% (<−10 dB) can be achieved by using a combination of ICP, a carbon nanomaterial like GNP and a ferrite.…”

Section: Emi Se Of Icps-based Hybrid Materialsmentioning

confidence: 92%

Conducting Polymeric Composites Based on Intrinsically Conducting Polymers as Electromagnetic Interference Shielding/Microwave Absorbing Materials—A Review

2021

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The development of sophisticated telecommunication equipment and other electro-electronic devices resulted in a kind of electromagnetic pollution that affects the performance of other equipment as well as the health of human beings. Intrinsically conducting polymers (ICP), mainly polyaniline and polypyrrole, have been considered as promising candidates for applications in efficient electromagnetic interference shielding (EMI) due to their ease of preparation, light weight, good conductivity and corrosion resistance. One of the important advantages of these materials is the capability to interact with the EM radiation through both absorption and reflection mechanisms thus enlarging the field of application. In this context, this review article describes a recent overview of the existing methods to produce intrinsically conducting polymers and their blends for electromagnetic shielding application. Additionally, it highlights the relationship between preparation methods reported in the literature with the structure and properties, such as electrical conductivity, electromagnetic shielding effectiveness (EMI SE), complex permittivity and permeability of these materials. Furthermore, a brief theory related to the electromagnetic mechanism and techniques for measuring the microwave absorbing properties are also discussed.

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Section: Emi Se Of Icps-based Hybrid Materialsmentioning

confidence: 92%

Conducting Polymeric Composites Based on Intrinsically Conducting Polymers as Electromagnetic Interference Shielding/Microwave Absorbing Materials—A Review

2021

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“…In addition, as shown in Figure 6, the incident EMW is divided into four parts when it enters a material. As for some particular morphologies and microstructures of materials, destructive amplitude phenomenon will occur while the wave path difference between the absorbed EMW and the reflected EMW is an odd multiple of half wavelengths [261][262][263]. Furthermore, it can also make the two-wave interference and reverse the phase of the absorbed EMW and the reflected EMW to partly counteract EMW [264][265][266][267][268][269][270].…”

Section: Emw Absorbing Performance Based On Microstructural Designmentioning

confidence: 99%

Ceramic-based electromagnetic wave absorbing materials and concepts towards lightweight, flexibility and thermal resistance

Wen

et al. 2022

International Materials Reviews

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Electromagnetic wave (EMW) absorbing materials have attracted much attention in recent years due to the dramatical increase of high-frequency electronic components and devices, which generate electromagnetic (EM) pollution and cause serious electromagnetic interference (EMI). Ceramics and associated (nano)composites are widely investigated as EMW absorbing materials because of their excellent mechanical properties, chemical/ thermal stabilities, and oxidation/corrosion resistance. In addition to outstanding EMW absorbing performance, lightweight, flexibility and thermal resistance at high temperatures strongly affect their practical applications. Therefore, this review highlights the recent progress of advanced ceramic-based EMW absorbing materials by evaluating their vital EMW absorption parameters. First, the fundamentals of EMW absorption are briefly summarized, followed by the effects of phase/chemical composition, micro/nano structure, and morphology on the EMW absorbing performance and associated mechanisms. Furthermore, modern strategies for the preparation of lightweight, flexible and thermal resistant EMW absorbing materials are comprehensively reviewed. Finally, the perspectives of advancedceramics as EMW absorbing materials are discussed as well.

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“…In practice, most of MAMs are prepared by the dispersion of one or more types of the metal (e.g., nickel), 6,7 magnetic, 8-10 carbon 11-14 or dielectric fillers 15,16 in polymer phases. Carbon nanotubes, 17-19 graphite derivatives (e.g., graphene, graphite, expanded graphite) 20,21 and carbon nanofiber 22 as carbon filler; various ferrite derivatives (e.g., magnetite, 23 barium ferrite, 24,25 strontium ferrite 26 ) as magnetic fillers; barium titanate 16,27 and titanium dioxide 28 as the dielectric filler are the most commonly used materials in the development of polymeric composite based MAM.…”

Section: Introductionmentioning

confidence: 99%

Quantifying dielectric and microwave absorption properties of barium titanate and strontium ferrite filled polymer composites

Kaşgöz

2020

Polymers and Polymer Composites

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In the present study, dielectric and microwave absorbing properties of barium titanate (BaTiO3) and strontium ferrite (SrFe12O19) filled thermoplastic polyurethane composites were investigated. The variations of the dielectric parameters of the BaTiO3 filled composite samples with filler concentration were also modeled and simulated by the power-law model to predict dielectric coefficients of the samples for higher filler concentrations. Comparing the prediction of the Power-law model and experimental measured dielectric values indicate that the Power-law model predicts dielectric parameters of the composite with acceptable accuracy. Microwave absorption analyses of the composite samples showed that SrFe12O19 is more effective than BaTiO3 on the enhancement of microwave absorption capability of TPU. The hybrid composite samples that contained both SrFe12O19 and BaTiO3 were also prepared, and their microwave absorption performance was evaluated. It was observed that much lower RL values than that of the composite samples, which were filled SrFe12O19 or BaTiO3 could be obtained by the hybrid composites. However, absorption bandwidth of them was narrower than counterparts that contained the same amount of SrFe12O19.

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Effect of loading ZnNiCrFe2O4 nanoparticles on structural and microwave absorption properties of polyaniline nanocomposites

Cited by 20 publications

References 20 publications

Conducting Polymeric Composites Based on Intrinsically Conducting Polymers as Electromagnetic Interference Shielding/Microwave Absorbing Materials—A Review

Conducting Polymeric Composites Based on Intrinsically Conducting Polymers as Electromagnetic Interference Shielding/Microwave Absorbing Materials—A Review

Ceramic-based electromagnetic wave absorbing materials and concepts towards lightweight, flexibility and thermal resistance

Quantifying dielectric and microwave absorption properties of barium titanate and strontium ferrite filled polymer composites

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