Zr doped Barium hexaferrite nanoplatelets and RGO fillers embedded Polyvinylidenefluoride composite films for electromagnetic interference shielding applications

Ананд, С.; Pauline, S.; Prabagar, C. Joseph

doi:10.1016/j.polymertesting.2020.106504

Cited by 60 publications

(25 citation statements)

References 85 publications

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“…As the microwave range has already been thoroughly studied, many studies on the EMI shielding of graphene-based polymer composites can be found in the literature. However, most studies concern materials with more than one carbon or metallic filler and a complicated fabrication procedure. − For example, Yang et al reported microcellular polyimide/reduced graphene oxide/MWCNT composites that exhibit a maximum EMI SE of 18.2 dB in the microwave X-band for a 0.5 mm-thick sample …”

Section: Resultsmentioning

confidence: 99%

Graphene-Based Thermoplastic Composites as Extremely Broadband and Frequency-Dependent EMI Absorbers for Multifunctional Applications

Żerańska-Chudek

Filak

Wilczyński

et al. 2022

ACS Appl. Electron. Mater.

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Multifunctional materials are the future of modern electronics. The reduction of weight and no interfacial mismatches perfectly fit the requirements of those industry sectors which require miniaturization, low weight, and high functionality, like aerospace or wearable electronics. Here, we show multifunctional thermoplastic polymer composites based on acrylonitrile–butadiene–styrene (ABS) with graphene nanoplatelet (GNP) inclusions at different weight loadings of GNPs, from the pure polymer up to 10 wt %. The multifunctionality is expressed via efficient electromagnetic interference (EMI) shielding in an extensive frequency range, from microwave to terahertz, and good electrical conductivity and heat management. The highest measured total shielding efficiency reached over 80 dB per 1 mm-thick sample in the terahertz range for the 5 wt % GNP concentration. Composites with the highest GNP loading show high thermal conductivity of 1.8 W/mK and an electrical conductivity of 188 S/m. All composites exhibited absorption as the primary shielding mechanism. These are some of the highest EMI shielding efficiency and thermal conductivity values reported in the literature. Our results suggest that the ABS/GNP composites reported here are suitable for multifunctional EMI absorber/heat management applications.

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Section: Resultsmentioning

confidence: 99%

Graphene-Based Thermoplastic Composites as Extremely Broadband and Frequency-Dependent EMI Absorbers for Multifunctional Applications

Żerańska-Chudek

Filak

Wilczyński

et al. 2022

ACS Appl. Electron. Mater.

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“…proposed that higher frequency absorption band (ν 1 ) lies in the range 500–600 cm −1 assigned to vibration of the tetrahedral metal complex which consists of a bond between the oxygen ion and the tetrahedral site metal ion Fe 3+ occupy the tetrahedral sites (O‐M Tet ), and the lower frequency absorption band (ν 2 ) lies in the range of 400–490 cm −1 , attributed to vibration of the octahedral metal complex, which consists of a bond between the oxygen ion and the octahedral site metal Co 2+ ions occupy the octahedral sites ion (O‐M Oct ). [ 21,22 ]…”

Section: Resultsmentioning

confidence: 99%

Structural and Magnetic Properties of Co_0.9Zn_0.1Fe₂O₄ Ferrite Nanoparticles Synthesized by Chemical Co‐Precipitation Method

Kore

Shahane

Mulik

2021

Macromolecular Symposia

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In this study, the structural and magnetic properties of Co0.9Zn0.1Fe2O4 ferrite nanoparticles are prepared by using chemical co‐precipitation method and characterized with X‐ray diffraction (XRD) and vibrating sample magnetometer (VSM). The structural results show that the particles have a formation of single‐phase cubic spinel structure and that the particles have a nano scale, with a clear agglomeration between the particles. The crystallite size of the sample is found 6.21 nm by using Scherer's formula, while the lattice parameters is 8.38 Å. The VSM study shows the saturation magnetization (Ms) 30.18 emu g‐1 and coercivity (Hc) 500 Oe along with hysteresis and to calculate the Ms values the Law of approach to saturation is used. The dried sample of ferrite is characterized with an FTIR‐spectrophotometer in wave number range of 4200–800 cm−1.

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“…Among all the phases of PVDF mentioned in the introduction section, β‐phase is the most polar phase (polarization per unit cell ≈ 8×10 −30 C m −2 ) which is mostly responsible for its piezoelectric property whereas α‐phase is the most stable state with no piezoelectric response. [ 24 ] In addition, β‐crystalline phase shows the highest dielectric properties (dielectric constant value is in the range of 6–12) than other crystalline phases. [ 25 ] The XRD spectra of neat PVDF film ( Figure ) shows the XRD peaks at 17.5°, 18.6°, 19.7°, and 26.5° corresponding to (100), (020), (110), and (021) planes, respectively according to JCPDS card no.…”

Section: Resultsmentioning

confidence: 99%

Electromagnetic Interference Shielding Properties of BaCo₂Fe₁₆O₂₇ Nanoplatelets and RGO Reinforced PVDF Polymer Composite Flexible Films

Ананд

Pauline

2020

Adv Materials Inter

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The electromagnetic Interference (EMI) shielding effectiveness of W‐Type barium hexaferrite (BaCo2Fe16O27) and reduced graphene oxide (RGO) nanofillers reinforced poly(vinylidenefluoride) (PVDF) polymer composite films are reported. Two different amounts of BaCo2Fe16O27 (10 wt% and 30 wt%) nanofillers and fixed amount of RGO (10 wt%) are loaded in PVDF matrix by solvent casting in order to fabricate the multifunctional PVDF/RGO/BaCo2Fe16O27 composite films. The synthesized samples are investigated using various instruments including X‐ray diffraction (XRD), Fourier‐transform infrared spectroscopy (FTIR), Raman spectroscopy, high resolution scanning electron microscopy (HRSEM), energy dispersive X‐ray spectroscopy (EDX), X‐ray photoelectron spectroscopy (XPS) and vibrating sample magnetometer (VSM) analysis. The microwave properties of PVDF/RGO/BaCo2Fe16O27 composites are tested with vector network analyser (VNA) in 8–12 GHz frequency (X‐Band). The possible mechanism of EMI shielding is investigated from the analysis of complex permittivity and permeability.The resultant flexible films exhibit desirable EMI SE of 35.94 dB at 11.8 GHz for the 10 wt% of BaCo2Fe16O27 addition in PVDF composite for a very small thickness of 0.2 mm. The combination of high dielectric loss ( tanδε = 1.63) and magnetic loss (tanδμ = 0.26) contributes to high absorption of 29.85 dB (>99% attenuation) dominated over reflection. Thus, the simple and cost‐effective fabrication of ultrathin and flexible PVDF/RGO/BaCo2Fe16O27 composite film with low filler content has a great potential as suppresser in electromagnetic fields.

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Zr doped Barium hexaferrite nanoplatelets and RGO fillers embedded Polyvinylidenefluoride composite films for electromagnetic interference shielding applications

Cited by 60 publications

References 85 publications

Graphene-Based Thermoplastic Composites as Extremely Broadband and Frequency-Dependent EMI Absorbers for Multifunctional Applications

Graphene-Based Thermoplastic Composites as Extremely Broadband and Frequency-Dependent EMI Absorbers for Multifunctional Applications

Structural and Magnetic Properties of Co_0.9Zn_0.1Fe₂O₄ Ferrite Nanoparticles Synthesized by Chemical Co‐Precipitation Method

Electromagnetic Interference Shielding Properties of BaCo₂Fe₁₆O₂₇ Nanoplatelets and RGO Reinforced PVDF Polymer Composite Flexible Films

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Zr doped Barium hexaferrite nanoplatelets and RGO fillers embedded Polyvinylidenefluoride composite films for electromagnetic interference shielding applications

Cited by 60 publications

References 85 publications

Graphene-Based Thermoplastic Composites as Extremely Broadband and Frequency-Dependent EMI Absorbers for Multifunctional Applications

Graphene-Based Thermoplastic Composites as Extremely Broadband and Frequency-Dependent EMI Absorbers for Multifunctional Applications

Structural and Magnetic Properties of Co0.9Zn0.1Fe2O4 Ferrite Nanoparticles Synthesized by Chemical Co‐Precipitation Method

Electromagnetic Interference Shielding Properties of BaCo2Fe16O27 Nanoplatelets and RGO Reinforced PVDF Polymer Composite Flexible Films

Contact Info

Product

Resources

About

Structural and Magnetic Properties of Co_0.9Zn_0.1Fe₂O₄ Ferrite Nanoparticles Synthesized by Chemical Co‐Precipitation Method

Electromagnetic Interference Shielding Properties of BaCo₂Fe₁₆O₂₇ Nanoplatelets and RGO Reinforced PVDF Polymer Composite Flexible Films