Electrical and Dielectric Properties of Composites Composed of Natural Quartz with Aluminum

Saeed, Abdu; Madkhli, Aysh Y.; Al-Dossari, M.; Abolaban, Fouad A.

doi:10.1007/s12633-022-01713-8

Cited by 24 publications

(5 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High dielectric constant values can be recommended in capacitive applications needing smaller dimensions, and low dielectric constants are used in applications involving high frequency or power to minimize electrical power loss 55 . The values of dielectric constant and loss are calculated from 56–58 :

ε^{'} = \frac{italicCd}{{normalε}_{0} A}

ε^{″} = \frac{σ}{{ωε}_{0}}

where A and d are the sample's area and thickness and C is the sample capacitance.…”

Section: Resultsmentioning

confidence: 99%

IncorporatedTiO₂nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

Al‐Muntaser,

Abo‐Dief,

Tarabiah

et al. 2023

Polymer Engineering & Sci

Self Cite

View full text Add to dashboard Cite

In the present work, sol–gel‐synthesized titanium oxide nanoparticles (TiO2 NPs) were added to polyvinyl chloride (PVC) and polymethyl methacrylate (PMMA) to create polymer nanocomposites (PNCs) samples. The preparation was carried out via the solution casting method. The synthesized TiO2 NPs have a tetragonal anatase phase and an average grain size of 15.7 nm. XRD analysis reveals that the TiO2 NPs' addition to PVC/PMMA causes a decrease in the crystallinity of PNCs films. Infrared Fourier analysis demonstrated the interplay/complexity between the PVC/PMMA blend and TiO2 NPs. The UV/visible spectrum of the PVC/PMMA blend showed two absorbance peaks at 278 and 208 nm, which may result from the n → π* and π → π* transitions. Also, optical bandgaps for indirect and direct allowed transitions decreased with increasing TiO2 NPs concentration. The samples' AC electrical conductivity and dielectric properties were measured at room temperature. As the TiO2 NPs content in the nanocomposite rises, a percolating network begins to emerge inside the composite, demonstrating that AC electrical conductivity obeys Jonscher's law. Additionally, it has been demonstrated that nanoparticle concentration leads to a higher composite dielectric loss and dielectric constant. These findings suggest the possibility of using the prepared nanocomposites in capacitive energy storage and optoelectronic devices.Highlights PVC/PMMA‐TiO2 nanocomposites' films were fabricated via the solution casting method. Adding TiO2 NPs to PVC/PMMA reduces the crystallinity of the PNCs films. The allowed direct and indirect bandgaps decreased with rising TiO2 NPs content. AC conductivity, impedance, and dielectric characteristics were discussed. The findings indicate the use of prepared samples in optoelectronic devices.

show abstract

ε^{'} = \frac{italicCd}{{normalε}_{0} A}

ε^{″} = \frac{σ}{{ωε}_{0}}

where A and d are the sample's area and thickness and C is the sample capacitance.…”

Section: Resultsmentioning

confidence: 99%

IncorporatedTiO₂nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

Al‐Muntaser,

Abo‐Dief,

Tarabiah

et al. 2023

Polymer Engineering & Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…On the other hand, materials with low dielectric constants are employed in applications involving high frequency or power to minimize electrical power loss 56 . The dielectric constant and loss values are determined through the utilization of the following equation 57 :

ε^{'} = \frac{italicCT}{ε_{o} A},

ε^{″} = \frac{σ^{'}}{ε_{o} ω .}

…”

Section: Resultsmentioning

confidence: 99%

Influence of cesium bromide nanoparticles on the structural, optical, electrical, and antibacterial properties of polyvinyl alcohol/sodium alginate for biological applications

Diab,

Ragab,

Hamada

et al. 2023

Vinyl Additive Technology

View full text Add to dashboard Cite

This study investigates the use of organic and inorganic nanostructures to create innovative functional materials with applications in optoelectronics devices. Specifically, nanocomposite films were created by incorporating different concentrations of cesium bromide nanoparticles (5, 10, and 15 wt%) into a polyvinyl alcohol (PVA) and sodium alginate (SA) polymer blend (50/50 wt%) through a solution casting process. The impact of CsBr NPs on the structural, optical, and electrical properties of the virgin PVA/SA matrix was systematically investigated. x‐ray crystallography investigation verified the semicrystalline nature of the PVA/SA. FTIR spectra showed the main vibrational peaks of PVA/SA, with their intensity decreasing after the addition of cesium bromide. Scanning electron microscopy images showed the formation of aggregations and the increase of roughness for the PVA/SA‐CsBr NPs 15 wt% nanocomposite sample. The UV/vis. absorption spectrum showed a decrease in the energy gap values, which decreased from 4.25 to 3.89 eV in the direct transition and decreased from 4.12 to 3.77 eV in the indirect transition. Furthermore, the electrical conductivity and dielectric properties demonstrated improvement with increasing concentration of CsBr NPs. The antibacterial efficacy against Staphylococcus aureus and Escherichia coli exhibited an upward trend with an increase in CsBr nanoparticle concentration. Overall, the results suggest the promising potential of these nanocomposite films for applications in optoelectronics and biological applications.Highlights XRD shows that the amorphousity is increased after addition CsBr NPs. FT‐IR confirms the interactions/complexation between PVA/SA polymeric matrix filled with CsBr NPs. Optical energy gap is decreased with increasing CsBr concentrations. SEM images show the prepared samples have a smooth surface and only have a few defects. By adding CsBr NPs the electrical conductivity is tremendously improved.

show abstract

“…The peaks in the range 1630–1410 cm –1 might be referred to as CC bonds in the aromatic molecular structure . Besides, the peaks in the spectral range of 1390–1150 cm –1 can be assigned to the C–O group of the rings’ of the phenols and aromatic structures. , The peaks between 1130 and 1050 cm –1 could be attributed to the asymmetric stretching vibration of Si–O–Si in the quartz − included in the epoxy base. The FTIR peaks in the range of 1050–720 cm –1 might be assigned to the oxirane groups’ symmetric/asymmetric stretching vibration mode C–O–C …”

Section: Resultsmentioning

confidence: 99%

Epoxy Flooring/Oil Fly Ash as a Multifunctional Composite with Enhanced Mechanical Performance for Neutron Shielding and Chemical-Resistance Applications

et al. 2022

Self Cite

View full text Add to dashboard Cite

Heavy-oil fly ash (HOFA) is a graphitic carbon powder extracted in vast amounts as a waste material from burning crude oil in power plants. This HOFA has attractive structural properties besides its high amount of pure carbon (∼90 wt %). This powder exists in spherical, highly porous micron-sized particles, which implies its great potential as a mechanical reinforcement for different polymers. In this work, HOFA has been utilized to enhance the mechanical properties of epoxy flooring at HOFA weight fractions of 0, 1, 1.6, and 3.2 wt %. The obtained results revealed that the prepared epoxy-flooring/ HOFA composites at a HOFA content of 1.6 wt % showed significant mechanical improvements compared with the pristine polymer. The tensile strength and Young's module values were enhanced by ∼17 and 11%, respectively. Furthermore, the neutron-shielding performance was investigated. The composite with 1.6 wt % showed better neutron attenuation and lower transmittance than the pristine epoxy. The chemical resistance was also extensively studied against sodium hydroxide, nitric acid, and sulfuric acid. The changes in morphology, chemical elements, mass, volume, and molecular structures were investigated rigorously for pristine epoxy and its composite with HOFA at 1.6 wt %. After exposure to these chemicals for 21 days, the tested properties of the epoxy-flooring/HOFA composite showed better chemical resistance than that of the pristine epoxy. Where the epoxy-flooring/ HOFA composite showed a surface with low cracks and blistering, it showed lesser changes in mass and volume and fewer molecular structure changes. These results indicated that it is possible to use this multifunctional composite for several applications, including the petrochemical industry, radiation shielding, construction, and automobiles.

show abstract

Electrical and Dielectric Properties of Composites Composed of Natural Quartz with Aluminum

Cited by 24 publications

References 49 publications

IncorporatedTiO₂nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

IncorporatedTiO₂nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

Influence of cesium bromide nanoparticles on the structural, optical, electrical, and antibacterial properties of polyvinyl alcohol/sodium alginate for biological applications

Epoxy Flooring/Oil Fly Ash as a Multifunctional Composite with Enhanced Mechanical Performance for Neutron Shielding and Chemical-Resistance Applications

Contact Info

Product

Resources

About

Electrical and Dielectric Properties of Composites Composed of Natural Quartz with Aluminum

Cited by 24 publications

References 49 publications

IncorporatedTiO2nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

IncorporatedTiO2nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

Influence of cesium bromide nanoparticles on the structural, optical, electrical, and antibacterial properties of polyvinyl alcohol/sodium alginate for biological applications

Epoxy Flooring/Oil Fly Ash as a Multifunctional Composite with Enhanced Mechanical Performance for Neutron Shielding and Chemical-Resistance Applications

Contact Info

Product

Resources

About

IncorporatedTiO₂nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

IncorporatedTiO₂nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices