Effect on the EMI Shielding Properties of Cobalt Ferrites and Coal-Fly-Ash Based Polymer Nanocomposites

Gulzar, Noreen; Zubair, Khadija; Shakir, M. Fayzan; Zahid, Muhammad; Nawab, Yasir; Rehan, Zulfiqar Ahmad

doi:10.1007/s10948-020-05608-w

Cited by 36 publications

(17 citation statements)

References 27 publications

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“…In their research, Durmus et al 159 prepared a flexible TPU-CNF-Fe 3 O 4 nanocomposite having the composition of 80-5-15 wt% showing the reflection loss (RL) value of À32 dB which signified that the composite material could absorb the 97% of an incident electromagnetic wave at around 12.14 GHz. Gulzar et al 160 presented nanocomposites composed of cobalt ferrite (CoFe 2 O 4 ), thermoplastic polyurethane (TPU), and fly ash. They focused on the change in electrical conductivity due to increasing the concentrations of fly ash and cobalt ferrite.…”

Section: Materials Advances Reviewmentioning

confidence: 99%

A journey of thermoplastic elastomer nanocomposites for electromagnetic shielding applications: from bench to transitional research

2022

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Section: Materials Advances Reviewmentioning

confidence: 99%

A journey of thermoplastic elastomer nanocomposites for electromagnetic shielding applications: from bench to transitional research

2022

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“…Epoxy resin, thermoplastic polyurethane (TPU), polyvinylidene fluoride (PVDF), and polydimethylsiloxane are some of the most commonly used polymer matrices [ 6 , 7 ]. Among them, TPU based composites have attained an incredible research interest due to their flexibility, stretchability, superior mechanical properties, and wearable resistance [ 8 ]. For example, Valentini et al used exfoliated graphite-TPU nanocomposite and recorded remarkable shielding efficiency in the microwave region [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…Dey et al [ 14 ] investigated the EMI shielding efficiency of Co 0.5 Zn 0.4 Cu 0.1 Fe 2 O 4 -GO/paraffin wax hybrid nanocomposite and reported a shielding efficiency of 53.2 dB in the X-band frequency region. Gulzar et al [ 8 ] reported a shielding efficiency of 35 dB in the frequency range from 0.1 to 8 GHz for cobalt ferrites along with coal-fly in the TPU matrix. In addition, Ismail et al [ 15 ] investigated EM shielding and microwave absorption properties of CoFe 2 O 4 and polyaniline doped with para toluene sulfonic acid and reported a maximum return loss of −28.4 dB at 8.1 GHz.…”

Section: Introductionmentioning

confidence: 99%

CuxCo1-xFe2O4 (x = 0.33, 0.67, 1) Spinel Ferrite Nanoparticles Based Thermoplastic Polyurethane Nanocomposites with Reduced Graphene Oxide for Highly Efficient Electromagnetic Interference Shielding

ANJU

Yadav

Pötschke

et al. 2022

IJMS

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CuxCo1−xFe2O4 (x = 0.33, 0.67, 1)-reduced graphene oxide (rGO)-thermoplastic polyurethane (TPU) nanocomposites exhibiting highly efficient electromagnetic interference (EMI) shielding were prepared by a melt-mixing approach using a microcompounder. Spinel ferrite Cu0.33Co0.67Fe2O4 (CuCoF1), Cu0.67Co0.33Fe2O4 (CuCoF2) and CuFe2O4 (CuF3) nanoparticles were synthesized using the sonochemical method. The CuCoF1 and CuCoF2 exhibited typical ferromagnetic features, whereas CuF3 displayed superparamagnetic characteristics. The maximum value of EMI total shielding effectiveness (SET) was noticed to be 42.9 dB, 46.2 dB, and 58.8 dB for CuCoF1-rGO-TPU, CuCoF2-rGO-TPU, and CuF3-rGO-TPU nanocomposites, respectively, at a thickness of 1 mm. The highly efficient EMI shielding performance was attributed to the good impedance matching, conductive, dielectric, and magnetic loss. The demonstrated nanocomposites are promising candidates for a lightweight, flexible, and highly efficient EMI shielding material.

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“…22–30 Some other materials like graphene CNTs and different kinds of ferrites were also evaluated for this application and provide very good shielding effectiveness with very concentrations. 29–36…”

Section: Introductionmentioning

confidence: 99%

Electrically conductive epoxy/polyaniline composite fabrication and characterization for electronic applications

Rashid

Tariq

Shakir

et al. 2021

Journal of Reinforced Plastics and Composites

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This study reports on the electrical conductivity, dielectric, and electromagnetic interferenc (EMI) shielding properties of conductive epoxy/PAni blend containing various concentrations. Polyaniline (PAni) was synthesized using oxidative chemical polymerization technique and then dispersed into epoxy resin using a sonication bath. Infrared spectra confirm the curing of composites. Increasing the aspect ratio of PAni in epoxy increased the electrical conductivity and improves the microwave absorption properties of composites in the microwave range (0.1 GHz–20 GHz). Electrical conductivity was measured by using the four-probe method, and the maximum conductivity of the composite was achieved 3.51 × 10−13 Scm−1 with 30 wt% of PAni. The maximum porosity of the composite with 30 wt% of PAni was 15.5%. EMI shielding was measured by a vector network analyzer (VNA) in the microwave region (0.1 GHz–20 GHz), which gives the maximum value of 63 dB. IR shielding was measured by IR spectroscopy and less than 0.5% transmission was observed in NIR (700 nm–2500 nm) region. The average particle size of PAni is found to be 113 nm. These composites were used as a potential candidate for conductive coatings, EMI shielding purposes, and electronic applications.

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Effect on the EMI Shielding Properties of Cobalt Ferrites and Coal-Fly-Ash Based Polymer Nanocomposites

Cited by 36 publications

References 27 publications

A journey of thermoplastic elastomer nanocomposites for electromagnetic shielding applications: from bench to transitional research

A journey of thermoplastic elastomer nanocomposites for electromagnetic shielding applications: from bench to transitional research

CuxCo1-xFe2O4 (x = 0.33, 0.67, 1) Spinel Ferrite Nanoparticles Based Thermoplastic Polyurethane Nanocomposites with Reduced Graphene Oxide for Highly Efficient Electromagnetic Interference Shielding

Electrically conductive epoxy/polyaniline composite fabrication and characterization for electronic applications

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