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

Abstract

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.

Atom Transfer Radical Polymerization of Pyrrole-Bearing Methacrylate for Production of Carbonyl Iron Particles with Conducting Shell for Enhanced Electromagnetic Shielding

“…Thus, it is possible through the modification of the particle surface and thereby affecting the frequency characteristics of permeability and permittivity of MREs to tune the operating frequency range of SE, making possible their application in the frequency range from nearly 700 MHz to 1.6 GHz, in which many communication and information transmission systems usually operate [ 9 ]. The values presented in this study are very promising and still competitive to the state of the art as reported by Anju et al combining magnetic nanoparticles, reduced graphene oxide in TPU matrix with shielding efficiency on transmission of 58.8 dB for a sample thickness 1 mm [ 45 ]. Utilization of the magnetite particles with reduced graphene oxide provides the reflection of 25 dB with a sample thickness of 1 mm [ 46 ].…”

Optimization of CoFe2O4 nanoparticles and graphite fillers to endow thermoplastic polyurethane nanocomposites with superior electromagnetic interference shielding performance

“…The real part of permittivity ε ′ and permeability μ ′ signifies the ability to store electromagnetic energy, whereas the imaginary part of permittivity ε ′′ and permeability μ ′′ corresponds to the attenuation ability of electromagnetic energy. 62 …”

“…The real part of permittivity 3 0 and permeability m 0 signies the ability to store electromagnetic energy, whereas the imaginary part of permittivity 3 00 and permeability m 00 corresponds to the attenuation ability of electromagnetic energy. 62 Fig. 9(a) illustrates the variation of the real part of the permittivity 3 0 as a function of the frequency.…”

Synergistic potential in spinel ferrite MFe2O4 (M = Co, Ni) nanoparticles-mediated graphene oxide: Structural aspects, photocatalytic, and kinetic studies

“…Spinel ferrites (MFe 2 O 4 ) have diverse properties that make them attractive for various applications. They possess excellent magnetic properties, making them essential in magnetic devices like recording devices, data storage, sensors, and electromagnetic interference shielding 1 – 3 . Spinel ferrites are known for their exceptional electrical conductivity and dielectric properties.…”