Polymeric blends and nanocomposites for high performance EMI shielding and microwave absorbing applications

Deeraj, B.D.S.; Jayan, Jitha S.; Raman, Akhila; Saritha, Appukuttan; Joseph, Kuruvilla

doi:10.1080/09276440.2022.2068245

Cited by 11 publications

(3 citation statements)

References 212 publications

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“…EMI shielding refers to the absorption or reection of unwanted electrical waves through specic materials. 114,115 Metal materials can reect electromagnetic waves, but they also produce secondary electrical interference. Some composites have become the research focus of EMI shielding materials (such as foam materials, aerogel materials, aerogellike materials).…”

Section: Other Dry Methodsmentioning

confidence: 99%

Research progress on the surface modification of carbon fiber

Peng,

Wu,

Wei

2024

RSC Adv.

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Section: Other Dry Methodsmentioning

confidence: 99%

Research progress on the surface modification of carbon fiber

Peng,

Wu,

Wei

2024

RSC Adv.

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“…One major role of nanoparticles is to increase the electrical conductivity of polymers, thereby effecting the EMI shielding efficiency of nanocomposites [103][104][105]. Among carbon nanoparticles, graphene was found to be effective to develop radiation protection shields of polymeric nanocomposites [106,107].…”

Section: Graphene Nanocomposites For Emi Shieldingmentioning

confidence: 99%

Graphene Nanocomposites for Electromagnetic Interference Shielding—Trends and Advancements

Kausar,

Ahmad,

Zhao

et al. 2023

J. Compos. Sci.

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Electromagnetic interference is considered a serious threat to electrical devices, the environment, and human beings. In this regard, various shielding materials have been developed and investigated. Graphene is a two-dimensional, one-atom-thick nanocarbon nanomaterial. It possesses several remarkable structural and physical features, including transparency, electron conductivity, heat stability, mechanical properties, etc. Consequently, it has been used as an effective reinforcement to enhance electrical conductivity, dielectric properties, permittivity, and electromagnetic interference shielding characteristics. This is an overview of the utilization and efficacy of state-of-the-art graphene-derived nanocomposites for radiation shielding. The polymeric matrices discussed here include conducting polymers, thermoplastic polymers, as well as thermosets, for which the physical and electromagnetic interference shielding characteristics depend upon polymer/graphene interactions and interface formation. Improved graphene dispersion has been observed due to electrostatic, van der Waals, π-π stacking, or covalent interactions in the matrix nanofiller. Accordingly, low percolation thresholds and excellent electrical conductivity have been achieved with nanocomposites, offering enhanced shielding performance. Graphene has been filled in matrices like polyaniline, polythiophene, poly(methyl methacrylate), polyethylene, epoxy, and other polymers for the formation of radiation shielding nanocomposites. This process has been shown to improve the electromagnetic radiation shielding effectiveness. The future of graphene-based nanocomposites in this field relies on the design and facile processing of novel nanocomposites, as well as overcoming the remaining challenges in this field.

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“…Electrically conductive polymer composites have received great attention owing to their promising applications in many fields, [1][2][3] including antistatic materials, 4 electromagnetic interference shielding, 5,6 self-regulated heating materials, 7 and sensors. 8 Binary conductive polymer systems consisting of conducting fillers such as carbon black (CB), 9,10 graphite, 11,12 multi-walled carbon nanotubes (MWCNTs), [13][14][15] and carbon fibers 16,17 in a polymer matrix can create polymer composites that are tough and flexible with appropriate electrical conductivity based on their applications.…”

Section: Introductionmentioning

confidence: 99%

Glycerol-treated polypropylene/carbon black nanocomposites: Analysis of electrical, rheological, thermal and mechanical properties

Tabatabaee,

Hanifi,

Tavakkol

2023

Journal of Elastomers & Plastics

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Electrically conductive nanocomposites based on polypropylene (PP) were prepared using carbon black (CB) nanoparticles via melt blending in the presence of glycerol and castor oil as hydroxyl functional dispersing aids and maleic anhydride–grafted polypropylene (MAgPP) as a compatibilizer. Initially, electrical conductivity of PP/CB nanocomposites with different dosages of both CB nanoparticles and dispersing aids were investigated through electrical analysis. Results indicated that castor oil had no beneficial effects on electrical conductivity. However, the efficiency of 3 wt% loading of glycerol was verified through measurements of electrical, rheological, thermal and mechanical properties as well as by morphological studies. The volume electrical conductivity value of PP nanocomposites containing 12 wt% CB significantly enhanced to 1.2 × 10−4 S/cm by adding 3 wt% glycerol in compared with nanocomposite without glycerol with the volume conductivity value of 1.8 × 10−6 S/cm. Incorporation of optimum amount of glycerol favoured the dispersion of nanofiller in the matrix which was confirmed by scanning electron microscopy observations, leading to higher conductivity due to better formation of conductive pathways within the matrix. Additionally, at the same concentration of CB nanofiller, samples treated with 3 wt% glycerol showed higher melting temperatures, storage modulus ( Gˊ), complex viscosity, tensile modulus and elongation at break. These findings indicate that adding an optimum amount of an efficient hydroxyl functional component like glycerol into PP/CB nanocomposite can be a promising way to enhance the electrically conductive performance while other properties could be maintained well or even improved.

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Polymeric blends and nanocomposites for high performance EMI shielding and microwave absorbing applications

Cited by 11 publications

References 212 publications

Research progress on the surface modification of carbon fiber

Research progress on the surface modification of carbon fiber

Graphene Nanocomposites for Electromagnetic Interference Shielding—Trends and Advancements

Glycerol-treated polypropylene/carbon black nanocomposites: Analysis of electrical, rheological, thermal and mechanical properties

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