Electrical and Electromagnetic Interference (EMI) shielding properties of hexagonal boron nitride nanoparticles reinforced polyvinylidene fluoride nanocomposite films

Sankaran, Sowmya; Deshmukh, Kalim; Ahamed, M. Basheer; Sadasivuni, Kishor Kumar; Faisal, Muhammad; Pasha, S. K. Khadheer

doi:10.1080/03602559.2018.1542725

Cited by 24 publications

(12 citation statements)

References 78 publications

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“…depicts the literature survey for EMI SE of various PNCs[2,5,16,23,49,[64][65][66]. Therefore, with minimal incorporation of GNPs, MMT and TiO 2 NPs, a significant enhancement in EMI SE was observed which signifies that this nanocomposite material can be a potential candidate for EMI shielding application.…”

mentioning

confidence: 86%

“…The boundless and explosive growth in the electrical, electronics and telecommunication industries have enabled the substantial generation of unwanted electromagnetic (EM) pollution which is known as electromagnetic interference, EMI [1,2]. The EM radiation emitted from the source generates considerable heat emissions thereby affecting the normal operation of electronic equipment and also leads to the malfunctioning of the neighbouring instruments [3,4].…”

Section: Introductionmentioning

confidence: 99%

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Morphology, Dielectric and EMI Shielding Characteristics of Graphene Nanoplatelets, Montmorillonite Nanoclay and Titanium Dioxide Nanoparticles Reinforced Polyvinylidenefluoride Nanocomposites

Kumar

Ahamed

Deshmukh

et al. 2021

J Inorg Organomet Polym

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Herein, flexible polyvinylidenefluoride (PVDF) nanocomposite films reinforced with different concentrations of graphene nanoplatelets (GNPs), montmorillonite (MMT) nanoclay and titanium dioxide (TiO 2 ) nanoparticles (NPs) were prepared using a simple and low-cost solution casting method. The surface morphology of PVDF/GNPs/TiO 2 /MMT nanocomposites and the interaction between PVDF, GNPs, TiO 2 NPs and MMT nanofillers was examined using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) techniques. The dielectric properties of the prepared nanocomposite films were evaluated using a frequency response impedance analyzer in the frequency range from 50 Hz to 20 MHz at various temperatures. The electromagnetic interference (EMI) shielding effectiveness (SE) of PVDF/GNPs/TiO 2 /MMT nanocomposites was measured in the Ku-band region (12-18 GHz) and the maximum SE of 12.6 dB was obtained for nanocomposites with GNPs-2.5%, MMT-1% and TiO 2 -11.5%. Considering the excellent EMI shielding performance, these nanocomposites can have promising applications in smart electronics and flexible devices.

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confidence: 86%

Section: Introductionmentioning

confidence: 99%

Morphology, Dielectric and EMI Shielding Characteristics of Graphene Nanoplatelets, Montmorillonite Nanoclay and Titanium Dioxide Nanoparticles Reinforced Polyvinylidenefluoride Nanocomposites

Kumar

Ahamed

Deshmukh

et al. 2021

J Inorg Organomet Polym

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“…It should also exhibit a high dielectric constant. Because of the high dielectric constant, the absorption loss may take place due to the polarization of electric and magnetic dipoles moment inside the material [7].…”

Section: Introductionmentioning

confidence: 99%

The Electromagnetic Interference Shielding Effectiveness and Dielectric Response of PVDF-nTiO2Nanocomposites Thin Films

Dani

Channabasavanna

Kulkarni³

et al. 2022

Trends Sci

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This paper presents electromagnetic interference (EMI) shielding effectiveness (SE) and dielectric response of Polyvinylidene Fluoride (PVDF) and PVDF-Titanium dioxide (nTiO2) nanocomposite thin films. nTiO2 nanoparticles were synthesized by the combustion method using urea as fuel. PVDF and PVDF-nTiO2nanocomposite thin films of different wt% of TiO2as fillers in the PVDF matrix were prepared using the solvent evaporation method. The synthesized nanocomposite thin films were characterized by XRD, FTIR, and SEM. The EMI-SE was studied in the frequency range 0.5 - 8GHz and dielectric response in 10Hz - 8MHz at room temperature. The EMI-SE shows up and down valleys in S-Band with an average variation of ⁓28 and ⁓35 dB at 2 and 4GHz respectively and remains stable in C- Band agreeing with existing literature. The dielectric constant of PVDF-nTiO2 nanocomposite thin films decreases with an increase in frequency and anomaly for 10wt% of nTiO2 fillers in the PVDF matrix at standard frequency. HIGHLIGHTS TiO2 nanoparticles were synthesized by the combustion method using urea as fuel PVDF and PVDF-nTiO2 composites were prepared using the solvent evaporation technique The addition of nanoparticles to the PVDF polymer has varied the EMI shielding and dielectric properties of nanocomposite thin films The observed variations in EMI-SE and dielectric constant with frequency are discussed in terms of the dynamics of domain switching GRAPHICAL ABSTRACT

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“…In recent times, tremendous research interest has been devoted to the development of novel polymer nanocomposites (PNCs) because of their enhanced properties [1][2][3]. The PNCs reinforced with inorganic nanoparticles (NPs) have potential applications such as optical power limiters, membranes for gas separation, flexible light emitters etc [4,5].…”

Section: Introductionmentioning

confidence: 99%

Enhanced dielectric properties of green synthesized Nickel Sulphide (NiS) nanoparticles integrated polyvinylalcohol nanocomposites*

Reddy

Deshmukh

Kovařík

et al. 2020

Mater. Res. Express

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A green synthesis approach has been adopted to prepare nickel sulphide nanoparticles (NiS NPs) using banana peel extract (BPE) as a reducing and capping agent. Polyvinyl alcohol (PVA)/NiS nanocomposite films were fabricated using a cost-effective solution casting technique by dispersing different contents of NiS NPs (0-3 wt%) in the PVA matrix. Various characterization techniques were employed to analyze the structural, thermal and morphological properties of the PVA/NiS nanocomposite films. Further, the dielectric behaviour of these nanocomposite films was investigated at frequency range 50 Hz-20 MHz and in the temperature range 40°C-140°C. Also, there exists a significant interaction between the polymer matrix and the nanofiller as evident from the notable improvement in the dielectric properties of the nanocomposites. The dielectric constant (ε) value of PVA/NiS nanocomposite film with 3 wt % NiS NPs loading was found to be 154.55 at 50 Hz and at 140°C which is 22 times greater than the dielectric constant value of neat PVA (6.90). These results suggest that NiS NPs were dispersed homogeneously in the PVA matrix.Among various polymers used for the fabrication of PNCs, polyvinyl alcohol (PVA) is most often preferred as a host matrix owing to its excellent film-forming ability, higher dielectric strength, the capability to form strong hydrogen bonding, easy processability, excellent chemical stability, and highly durable nature [17]. PVA has been employed for various applications such as in battery components, packaging, textile applications in the microelectronic industry, electromagnetic interference applications and so on [17,18]. Several research groups reported the dielectric properties of the PVA based nanocomposites [19][20][21]. With this inspiration, in the present study PVA has been chosen as a host polymer to synthesize PVA based nanocomposites. Now a day, more attention has been focussed on metal sulphide nanostructures because of their unique properties and applications [22]. Among these, nickel sulphide (NiS) has been mostly investigated because of its simple production, affordable price and high electronic conductivity [23,24]. It exhibits complicated electrical, optical, structural, compositional and magnetic phase behaviour [25]. Also due to the possession of multi-phases, binary Ni-S systems such as NiS 2 , Ni 3 S 4 , Ni 9 S 8 , Ni 7 S 6 , Ni 6 S 5 , Ni 4 S 3+x , Ni 3 S 2 , and Ni 3+x S 2 have become fascinated materials [26]. NiS NPs exhibit different shapes such as layer-rolled structures, urchin-like nanocrystallites, flower-like architectures, hollow spheres, nanoframes, nanorods, and nanospheres etc [27,28].Recently, increased attention has been given to the green approach for the synthesis of NPs because of its several advantages [29][30][31][32]. For the synthesis of NPs, the plant extracts which serve as reducing/capping agents are considered to be more beneficial than remaining techniques [33]. Several researchers reported the synthesis of metal sulphide NPs through a green synthesis a...

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Electrical and Electromagnetic Interference (EMI) shielding properties of hexagonal boron nitride nanoparticles reinforced polyvinylidene fluoride nanocomposite films

Cited by 24 publications

References 78 publications

Morphology, Dielectric and EMI Shielding Characteristics of Graphene Nanoplatelets, Montmorillonite Nanoclay and Titanium Dioxide Nanoparticles Reinforced Polyvinylidenefluoride Nanocomposites

Morphology, Dielectric and EMI Shielding Characteristics of Graphene Nanoplatelets, Montmorillonite Nanoclay and Titanium Dioxide Nanoparticles Reinforced Polyvinylidenefluoride Nanocomposites

The Electromagnetic Interference Shielding Effectiveness and Dielectric Response of PVDF-nTiO2Nanocomposites Thin Films

Enhanced dielectric properties of green synthesized Nickel Sulphide (NiS) nanoparticles integrated polyvinylalcohol nanocomposites*

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