Mechanical, thermal and EMI shielding study of electrically conductive polymeric hybrid nano-composites

Shakir, M. Fayzan; Tariq, Asra; Afzal, Ayesha; Rashid, Iqra Abdul

doi:10.1007/s10854-019-02088-0

Cited by 35 publications

(19 citation statements)

References 27 publications

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“…These two peaks are corresponding to the perpendicular and parallel polymer chain periodicity [21,22]. Similar results for PANI were also found in the literature [2,[23][24][25] Figure 6 shows the XRD pattern of NiFe nanoparticles. Face centered cubic structure of NiFe was confirmed [14].…”

Section: X-ray Diffractionsupporting

confidence: 84%

Effect of Nickel-spinal-Ferrites on EMI shielding properties of polystyrene/polyaniline blend

et al. 2020

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Magnetic and electrically conductive polymeric nanocomposites were fabricated using polystyrene (PS) as matrix, Nickel Ferrites (NiFe) as magnetic nanofiller and polyaniline (PANI) as electrically conductive nanofiller. Electromagnetic interference (EMI) shielding and infrared (IR) blocking are the main application of these nanocomposites. PANI and NiFe were successfully prepared by chemical and co-precipitation methods respectively. The successful fabrication of nanofillers was confirmed by the X-ray diffraction technique. DC conductivity and dielectric properties were first analyzed and a huge increase in both dielectric constant and DC conductivity was observed. Dielectric Constant seemed to be increased from 2.2 for PS to 5.5 for PS/PANI/NiFe composite. For the measurement of EMI shielding effectiveness (SE), Vector Network Analyzer was used in 0.1-20 GHz frequency range. IR spectroscopy was used to measure IR transmission in near-infrared (NIR) region of 700-2500 nm wavelength range. PS film is transparent for both NIR waves and microwaves, by observing almost 90% transmission in the NIR range and about − 3 dB SE in the microwave region. IR transmission reduces to less than 0.5% for PS/PANI/NiFe composite in the whole NIR range. Also, in the microwave region, − 3 dB shielding enhanced to less than − 35 dB in a broad range of frequency from 0.1 to 20 GHz.

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Section: X-ray Diffractionsupporting

confidence: 84%

Effect of Nickel-spinal-Ferrites on EMI shielding properties of polystyrene/polyaniline blend

et al. 2020

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“…EMI shielding of NiFe and TRGO was also tested separately in previous work. NiFe has poor dispersibility in a polymer matrix and gave almost 30 dB shielding effectiveness at 20 wt.% loading, while TRGO has good dispersibility and gave almost 35 dB shielding effectiveness with 5 wt.% loading [ 30 , 31 , 32 ].…”

Section: Resultsmentioning

confidence: 99%

“…EMI shielding at a high-frequency range requires the magnetic field to always be reversed to the original magnetic field produced by the current in excellent conductors [15][16][17][18][19][20][21][22]. This outstanding EMI shielding evaluates the usage of metals as well as magnetic nanomaterials to attenuate electric and magnetic field radiation [23][24][25][26][27][28][29][30]. Zubair et al synthesized thermally reduced graphene oxide (TRGO) and barium ferrites (BaFe) nanocomposites to improve the shielding efficiency solution casting method.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nickel Spinel Ferrites Nanoparticles Coated with Thermally Reduced Graphene Oxide for EMI Shielding in the Microwave, UV, and NIR Regions

et al. 2021

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The co-precipitation and in situ modified Hummers’ method was used to synthesize Nickel Spinal Ferrites (NiFe) nanoparticles and NiFe coated with Thermally Reduced Graphene Oxide (TRGO) (NiFe-TRGO) nanoparticles, respectively. By using polyvinyl chloride (PVC), tetrahydrofuran (THF), and NiFe-TRGO, the nanocomposite film was synthesized using the solution casting technique with a thickness of 0.12–0.13 mm. Improved electromagnetic interference shielding efficiency was obtained in the 0.1–20 GHz frequency range. The initial assessment was done through XRD for the confirmation of the successful fabrication of nanoparticles and DC conductivity. The microstructure was analyzed with scanning electron microscopy. The EMI shielding was observed by incorporating a filler amount varying from 5 wt.% to 40 wt.% in three different frequency regions: microwave region (0.1 to 20 GHz), near-infrared (NIR) (700–2500 nm), and ultraviolet (UV) (200–400 nm). A maximum attenuation of 65 dB was observed with a 40% concentration of NiFe-TRGO in nanocomposite film.

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“…The realized strength of hybrid nanocomposites is owed to the extremely small size and increased surface area of additive particles. A higher number of particles can be accommodated in thin films forming stronger interfaces 72 …”

Section: Characterization Of Materials Propertiesmentioning

confidence: 99%

Progress and challenges in sustainability, compatibility, and production of eco‐composites: A state‐of‐art review

Nassar

Alzebdeh

Pervez

et al. 2021

J of Applied Polymer Sci

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Owing to economic and environmental benefits, new generations of materials/commodities follow “from waste to wealth” strategy. Recently, there has been a huge upsurge in research on the development of eco‐composites using recycled plastic polymers and agro‐residues because the eco‐composites satisfy the stringent environment regulations and are cost‐effective. Herein, we present a detailed review on the potential use of several types of natural fillers as an efficient reinforcement for recycled plastic polymers. In particular, the characterization of different categories of eco‐composites according to their morphological, physical, thermal, and mechanical properties is extensively reviewed and their results are analyzed, compared, and highlighted. Furthermore, a framework to produce functional eco‐composites, which includes functionalization of ingredients, critical issues on microstructural parameters, processing, and fabrication methods, is outlined and supported with sufficient data from the literature. Finally, the review outlines the emerging challenges and future prospects of eco‐composites to be addressed by interested researchers to bridge the gap between research and commercialization of such a class of material. Overall, the acquired knowledge will guide researchers, scientists, and manufacturers to plan, select, and develop various forms of eco‐composites with enhanced properties and optimized production processes.

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Mechanical, thermal and EMI shielding study of electrically conductive polymeric hybrid nano-composites

Cited by 35 publications

References 27 publications

Effect of Nickel-spinal-Ferrites on EMI shielding properties of polystyrene/polyaniline blend

Effect of Nickel-spinal-Ferrites on EMI shielding properties of polystyrene/polyaniline blend

Synthesis of Nickel Spinel Ferrites Nanoparticles Coated with Thermally Reduced Graphene Oxide for EMI Shielding in the Microwave, UV, and NIR Regions

Progress and challenges in sustainability, compatibility, and production of eco‐composites: A state‐of‐art review

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