Superior dielectric and electrical characteristics of poly(methylmethacrylate) (PMMA)-BiFeO3-Polystyrene-2% divinyl benzene (PDB) composites

Yadav, Nagendra Prasad; Sahu, Bibhuti Bhusan; Mahaling, Ram Naresh; Yadav, Tarun; Tripathi, Pankaj K

doi:10.1016/j.ijleo.2023.170695

Cited by 6 publications

(4 citation statements)

References 37 publications

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“…However, in the high frequency domain, conduction may occur by electron hopping, leading to long-range movement. This results in an increase in AC conductivity due to the enhanced hopping frequency [27,52]. The values of Ac conductivity are comparable with the previous work [68][69][70][71].…”

Section: Dielectric Propertiessupporting

confidence: 90%

“…The M′′ spectra of the PMMA and Mg 0.5 Ni 0.5 Fe 2 O 4 /PMMA nanocomposite films showed distinct relaxation peaks within the frequency range of 100 Hz to 1 kHz [60][61][62]. These peaks can be attributed to the β-relaxation process, namely the rotation of the ester side groups (-COOCH 3 ) in the repeat units of the PMMA chain, as explained in tan (δ) spectra [51][52][53]. The M′′ relaxation peaks have shifted somewhat towards higher frequencies, as relaxation peaks in tan (δ) except in 4 wt% Mg 0.5 Ni 0.5 Fe 2 O 4 /PMMA sample shows the reverse behavior, which is a common characteristic observed in the dielectric and modulus loss functions of several PNC materials [62][63][64][65][66].…”

Section: Dielectric Propertiesmentioning

confidence: 88%

“…The MWS polarization arises from the interfaces between the insulator and conductor. The increase in the dielectric constant can be explained by analyzing the formation of mini-capacitor networks in the Mg 0.5 Ni 0.5 Fe 2 O 4 /PMMA nanocomposite films as the Mg 0.5 Ni 0.5 Fe 2 O 4 nanoparticle concentration gradually increases compared to pure PMMA [51,52].…”

Section: Dielectric Propertiesmentioning

confidence: 99%

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Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg_0.5Ni_0.5Fe₂O₄: structural, optical, and dielectric properties

Alzahrani,

Abulyazied,

Abomostafa

2024

Phys. Scr.

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This study employed the sol gel auto-combustion approach to synthesize Mg0.5Ni0.5Fe2O4 spinel ferrite nanoparticles. Additionally, the casting method was used to fabricate Mg0.5Ni0.5Fe2O4/PMMA nanocomposite polymer films. The structural properties were analyzed by the utilization of x-ray diffraction pattern (XRD), high resolution transmission electron microscope (HRTEM), and field emission scanning electron microscope (FESEM). The UV-visible spectrophotometer examination was used to evaluate the optical properties of the produced nanocomposite films, such as absorbance, transmittance, indirect energy band gap, Urbach energy, excitation coefficient, and refractive index. Two indirect optical energy gaps are calculated, whereas they decreased from 4.56 eV to 4.33 eV, and from 4.04 eV to 3.01 eV, while the Urbach energy increased from 0.304 eV to 0.524 eV as the nanofillers increased from 0 to 4 wt%. An investigation was conducted to examine the impact of nanoparticle doping on the dielectric constant, electric modulus, and ac conductivity. The Mg0.5Ni0.5Fe2O4/PMMA nanocomposite films demonstrate higher permittivity and ac conductivity and a lower dissipation factor and electric modulus compared to pure PMMA. The dielectric permittivity (ε′) increased from 2.76 to 3.43 at a constant frequency 100 Hz up to 2 wt.% of Mg0.5Ni0.5Fe2O4 then decreased to 2.41 while the dissipation factor tan(δ) decreased from 0.1 to 0.046 at the same frequency. The nanocomposite films are well-suited for utilization in CUT-OFF selective laser filters, solar cells, energy storage devices, and other applications in related industries.

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Section: Dielectric Propertiessupporting

confidence: 90%

Section: Dielectric Propertiesmentioning

confidence: 88%

Section: Dielectric Propertiesmentioning

confidence: 99%

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Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg_0.5Ni_0.5Fe₂O₄: structural, optical, and dielectric properties

Alzahrani,

Abulyazied,

Abomostafa

2024

Phys. Scr.

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“…For example, we can refer to many research studies such as the preparation of graphene oxide/polyaniline/polystyrene composites [8] . Moreover, Yadav et al [9] employed this procedure for preparing poly (methylmethacrylate)-BiFeO3Polystyrene-2% divinyl benzene composites [9] .…”

Section: Introductionmentioning

confidence: 99%

Effects of pyrolyzed Buxus sempervirens ingredient as micro and bio fillers on polystyrene: Spectroscopic characteristics

Fard

2023

Mater. Tech. Rep.

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In this study, Buxus sempervirens leaf ingredient (LP) and the carbon (LC) and the ash (LA) were obtained, which are the bio-originated materials. Carbon and ash obtained from this natural plant were prepared by heating and pyrolysis for 2 h at 250 ℃ and 700 ℃, respectively. Then, the solution casting method was used to prepare the composites of these bio-additives with polystyrene. Next, the effects of the additives on diffuse reflectance spectroscopy (DRS) and X-ray diffraction (XRD) spectra of polystyrene were investigated. In addition, the additives led to noticeable changes in X-ray diffraction results, implying a change in the morphology of the polymer. All of these observations imply the uniform formation of the polystyrene (PS) composites with the micro and bio-fillers.

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Scalable and low‐cost lithium acetate / polyetherimide composite dielectrics exhibiting improved energy storage properties at high temperature

Zhao,

Liu,

Jia

et al. 2024

J of Applied Polymer Sci

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Polymer dielectrics with excellent energy storage properties are crucial for high‐power density electronic equipment in environments such as high temperatures and strong electric fields. They play a critical role in applications including hybrid electric vehicles, electromagnetic launch devices, and photovoltaic power generation. In this paper, the small molecule compound lithium acetate (LiAc), which is low cost and exhibits good thermal stability in high‐temperature environments, was selected and blended with a polyetherimide (PEI) polymer matrix at an ultra‐low loading (≤0.3 vol%). LiAc has a higher electron affinity compared to PEI, which will result in a large trap energy level (Φe). The injected and excited electrons are trapped by strong electrostatic attraction, which suppresses carrier transport, reduces conduction losses, and improves breakdown strength in high‐temperature environments. This composite dielectric exhibits better energy storage properties in high‐temperature environments. The energy density of the 0.2% by volume LiAc/PEI composite dielectric reaches 3.04 J cm−3 at 150°C, maintaining an energy storage efficiency of approximately 90%. The research presented in this paper offers a novel approach to achieving excellent energy storage properties in polymer‐based composite dielectrics operating in high‐temperature environments.

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Superior dielectric and electrical characteristics of poly(methylmethacrylate) (PMMA)-BiFeO3-Polystyrene-2% divinyl benzene (PDB) composites

Cited by 6 publications

References 37 publications

Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg_0.5Ni_0.5Fe₂O₄: structural, optical, and dielectric properties

Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg_0.5Ni_0.5Fe₂O₄: structural, optical, and dielectric properties

Effects of pyrolyzed Buxus sempervirens ingredient as micro and bio fillers on polystyrene: Spectroscopic characteristics

Scalable and low‐cost lithium acetate / polyetherimide composite dielectrics exhibiting improved energy storage properties at high temperature

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Superior dielectric and electrical characteristics of poly(methylmethacrylate) (PMMA)-BiFeO3-Polystyrene-2% divinyl benzene (PDB) composites

Cited by 6 publications

References 37 publications

Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg0.5Ni0.5Fe2O4: structural, optical, and dielectric properties

Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg0.5Ni0.5Fe2O4: structural, optical, and dielectric properties

Effects of pyrolyzed Buxus sempervirens ingredient as micro and bio fillers on polystyrene: Spectroscopic characteristics

Scalable and low‐cost lithium acetate / polyetherimide composite dielectrics exhibiting improved energy storage properties at high temperature

Contact Info

Product

Resources

About

Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg_0.5Ni_0.5Fe₂O₄: structural, optical, and dielectric properties

Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg_0.5Ni_0.5Fe₂O₄: structural, optical, and dielectric properties