EMI shielding properties of polymer blends with inclusion of graphene nano platelets

Shakir, M. Fayzan; Khan, Ahmad Nawaz; Khan, Ramsha; Javed, Sofia; Tariq, Asra; Azeem, Muhammad; Riaz, Adeel; Shafqat, Ahmed; Cheema, Hammad M.; Akram, Mahreen; Ahmad, Imtiaz; Jan, Rahim

doi:10.1016/j.rinp.2019.102365

Cited by 79 publications

(38 citation statements)

References 33 publications

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“…The incoming electromagnetic waves are either reflected or transmitted through the shielding material, whereas a considerable amount of EM waves may be attenuated due to absorption by the inclusion of fillers. S-parameters are utilized to quantify the effect of reflection, absorption and transmission expressed as R, A and T respectively [5].…”

Section: Resultsmentioning

confidence: 99%

“…Hybrid polymer composites are used in various areas of applications due to their ease of processing, noncorrosiveness, light weight and flexibility. One such utilization is to employ them for the growing concern of EMI pollution especially in digital electronics & communication field [1][2][3][4][5][6][7][8][9]. The choice of both matrix and fillers may be tailored according to their content and related interaction.…”

Section: Introductionmentioning

confidence: 99%

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Graphene-ferrites interaction for enhanced EMI shielding effectiveness of hybrid polymer composites

Ahmed

Jan

Khan

et al. 2020

Mater. Res. Express

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Hybrid polymer composites based on poly vinylidene fluoride (PVDF) matrix are fabricated by dispersion of few layered graphene (FLG) and nickel spinal ferrites (NSF) for improving EMI shielding effectiveness. The FLG loading is kept constant at 3 wt% while NSF content is varied from 15-30 wt% in PVDF using solution processing technique. The shielding effectiveness in the frequency domain of 1-12 GHz is enhanced ranging 25 dB-45 dB for PVDF/FLG composite as compared to ∼0 dB for neat PVDF. With addition of NSF up to 15 wt%, the attenuation is increased to 30 dB-53 dB, clearly indicating the effective interaction and network formation of FLG and NSF in PVDF matrix. Moreover, the shielding effectiveness trend is reduced to 12 dB-43 dB as the NSF loading is increased to 30 wt% owing to its agglomeration. Absorption is the dominant phenomena in obtaining the total shielding effectiveness of ∼53 dB for PVDF/FLG-3 wt%NSF-15 wt% hybrid polymer composites. Additionally, the I-V curves provide the electrical conductivity trend while scanning electron microscope (SEM) confirms the network formation in hybrid composite.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Graphene-ferrites interaction for enhanced EMI shielding effectiveness of hybrid polymer composites

Ahmed

Jan

Khan

et al. 2020

Mater. Res. Express

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“…In addition to improved filler materials, polyaniline (PANI) comes as the matrix material [ 106 ]. Shakir et al [ 107 ] evaluated EMI shielding properties by utilizing polymer blends of polyvinyl chloride (PVC) and PANI with graphene nanoplatelets (GNP) insertion. An enhanced electrical conductivity was noticed both for PVC/PANI and PVC/PANI/GNP composites.…”

Section: Polymer-based Compositesmentioning

confidence: 99%

Graphene and Iron Reinforced Polymer Composite Electromagnetic Shielding Applications: A Review

et al. 2021

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With advancements in the automated industry, electromagnetic inferences (EMI) have been increasing over time, causing major distress among the end-users and affecting electronic appliances. The issue is not new and major work has been done, but unfortunately, the issue has not been fully eliminated. Therefore, this review intends to evaluate the previous carried-out studies on electromagnetic shielding materials with the combination of Graphene@Iron, Graphene@Polymer, Iron@Polymer and Graphene@Iron@Polymer composites in X-band frequency range and above to deal with EMI. VOSviewer was also used to perform the keyword analysis which shows how the studies are interconnected. Based on the carried-out review it was observed that the most preferable materials to deal with EMI are polymer-based composites which showed remarkable results. It is because the polymers are flexible and provide better bonding with other materials. Polydimethylsiloxane (PDMS), polyaniline (PANI), polymethyl methacrylate (PMMA) and polyvinylidene fluoride (PVDF) are effective in the X-band frequency range, and PDMS, epoxy, PVDF and PANI provide good shielding effectiveness above the X-band frequency range. However, still, many new combinations need to be examined as mostly the shielding effectiveness was achieved within the X-band frequency range where much work is required in the higher frequency range.

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“…For instance, the use of reduced graphene nanomaterials as fillers in a polymer matrix imparts an enhancement of electrical and thermal conductivity as well as an improvement of the mechanical properties of the resulting nanocomposites [ 5 , 6 , 7 ]. Electrically conductive polymer nanocomposites are attractive because they can be used for different purposes, such as electromagnetic interference shielding or as electrostatic discharge materials and thermoelectric generators [ 8 , 9 , 10 ]. In spite of the diversity of polymer matrices used for the preparation of carbon-based nanocomposites, thermoplastic elastomers stand out due to their unique mechanical properties [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Thermally Reduced Graphene Oxide/Thermoplastic Polyurethane Nanocomposites: Mechanical and Barrier Properties

et al. 2020

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This work consists of studying the influence of two thermally reduced graphene oxides (TRGOs), containing oxygen levels of 15.8% and 8.9%, as fillers on the barrier properties of thermoplastic polyurethane (TPU) nanocomposites prepared by melt-mixing processes. The oxygen contents of the TRGOs were obtained by carrying out the thermal reduction of graphene oxide (GO) at 600 °C and 1000 °C, respectively. The presence and contents of oxygen in the TRGO samples were determined by XPS and their structural differences were determined by using X-ray diffraction analysis and Raman spectroscopy. In spite of the decrease of the elongation at break of the nanocomposites, the Young modulus was increased by up to 320% with the addition of TRGO. The barrier properties of the nanocomposites were enhanced as was evidenced by the decrease of the permeability to oxygen, which reached levels as low as −46.1%.

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EMI shielding properties of polymer blends with inclusion of graphene nano platelets

Cited by 79 publications

References 33 publications

Graphene-ferrites interaction for enhanced EMI shielding effectiveness of hybrid polymer composites

Graphene-ferrites interaction for enhanced EMI shielding effectiveness of hybrid polymer composites

Graphene and Iron Reinforced Polymer Composite Electromagnetic Shielding Applications: A Review

Thermally Reduced Graphene Oxide/Thermoplastic Polyurethane Nanocomposites: Mechanical and Barrier Properties

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