Enhancement of the structural, optical, and dispersion performance of polyvinyl alcohol via coronene additive for optoelectronic applications DOI
A.A. Al‐Muntaser, Eman Alzahrani,

Hala M. Abo‐Dief

et al.

Physica Scripta, Journal Year: 2023, Volume and Issue: 98(11), P. 115964 - 115964

Published: Oct. 11, 2023

Abstract Composite films made of polyvinyl alcohol (PVA) filled with various coronene concentrations were fabricated via the solution casting method. Several characterization techniques used to examine prepared samples. The x-ray diffraction study shows decreasing semi-crystalline properties in PVA/coronene composites increasing levels, thereby improving charge carrier mobility and enhancing conductivity. alterations chemical functional groups explored using Fourier-transform infrared spectroscopy (FTIR). impact molecules on optical characteristics PVA was investigated spectral ranges 190-2500 nm. composite exhibits higher UV blocking 190-400 nm wavelength range, suitable for notch filters like laser filters. By filling ratio from 0 wt% 3 wt%, both indirect direct band-gap decreased 5.19 eV 5.77 3.85 5.18 eV, respectively. single oscillator model (Wemple-DiDomenico) explain refractive index dispersion region. extracted values energy (E d ), o dielectric constant at infinite frequency ( ε ∞ lattice L ) samples increased 0.78 2.41 1.32 1.41 13.44 12.22 2.10 2.13, These changes parameters are due cross-linking between polymeric matrix coronene. As a result these improvements, could be applied flexible packaging applications optoelectronic devices solar cells or light-emitting diodes.

Language: Английский

Modulating the properties of carboxymethyl chitosan/polyethylene oxide nanocomposites with aluminium oxy hydroxide: A comprehensive study DOI

K. Meera,

M. T. Ramesan

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: unknown, P. 137034 - 137034

Published: Oct. 1, 2024

Language: Английский

Citations

5
Broadband dielectric behaviour and structural characterization of PVDF/PMMA/OMMT polymer nanocomposites for promising performance nanodielectrics in flexible technology advances DOI
Naresh Kumar, R.J. Sengwa

Physica Scripta, Journal Year: 2023, Volume and Issue: 98(8), P. 085915 - 085915

Published: June 29, 2023

Abstract Characterization of broadband dielectric behaviour polymer nanocomposites (PNCs) is vital for the exploration efficient nanodielectrics as energy storage, flexible substrates, and insulators in a wide range advanced electronic device technologies. Accordingly, herein, PNC films based on poly(vinylidene fluoride) (PVDF)/ poly(methyl methacrylate) (PMMA) blend matrix (80/20 wt/wt%) dispersed with 0, 2.5, 5, 10 wt% organo-modified montmorillonite (OMMT) nanoclay are developed by state-of-the-art homogenized solution casting method. These PVDF/PMMA/OMMT compositions characterized detail employing scanning electron microscope (SEM) equipped dispersive x-ray (EDX) device, diffractometer (XRD), Fourier transform infrared (FTIR) spectrometer, differential calorimeter (DSC), inductance-capacitance-resistance (LCR) meter, impedance/material analyzer (IMA). The SEM microimages, XRD traces, FTIR spectra evidenced appreciable homogeneity surface morphology, intercalated exfoliated OMMT structures, α , β γ -phase crystallites PVDF these complex semicrystalline PNCs. DSC thermograms confirmed significant alteration melting temperature degree crystallinity increased amount 80PVDF/20PMMA host matrix. dispersion over frequency 20 Hz−1 GHz explained contribution interfacial polarization permittivity at lower experimental frequencies, whereas higher frequencies ruled dipolar composites 27 °C. loss angle tangent electric modulus revealed an intense structural dynamics relaxation process upper radio region. influence concentration electrical conductivity explored. detailed characterization innovative important thermal properties their immense potential high-performance highlighting current applications

Language: Английский

Citations

13
Synergistic effect of polymer blend compositions on the structural, thermal, optical, and broadband dielectric properties of P(VDF-HFP)/PEO/ZnO polymer nanocomposites DOI Creative Commons
Chandra Prabha Charan, R.J. Sengwa, Mukul Saraswat

et al.

Chemical Physics Impact, Journal Year: 2023, Volume and Issue: 8, P. 100410 - 100410

Published: Dec. 3, 2023

Polymer nanocomposites (PNCs) composed of poly(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP))/ poly(ethylene oxide) (PEO) blend host matrix varying compositions xP(VDF-HFP)/(100–x)PEO-2 wt% ZnO films with x values 20, 50, and 80 wt%, zinc oxide (ZnO) as nanofiller (2 wt%) are prepared by state-of-the-art homogenized solution cast method. The SEM micro-images these PNC revealed that the polymer considerably affect polymers miscibility, spherulitic morphologies, crystalline phases. FTIR spectra demonstrated P(VDF-HFP) PEO chain interactions in PNCs change significantly composition. DSC results a decrease crystallite temperature degree crystallinity increase amount materials. Analysis UV-Vis categorized wide band gap (∼ 3.1 eV) semiconductive optical Broadband frequency range (20 Hz – 1 GHz) dielectric dispersion 50P(VDF-HFP)/50PEO-2 composition based nanodielectric film has relatively high constant, whereas segmental dipolar reorientation relaxation processes strongly dependent for experimental considered discussed detail concerning multifunctionality promising candidates innovation flexible optoelectronic nanodielectric-based microelectronic devices.

Language: Английский

Citations

13
Comparation of barium titanate and multi-walled carbon nanotubes modified PVDF composites: A perspective of dielectric, crystalline, rheological and mechanical properties DOI Open Access

Junhang Tang,

Han Zhang, Zhangbin Yang

et al.

Ceramics International, Journal Year: 2023, Volume and Issue: 50(1), P. 1059 - 1068

Published: Oct. 20, 2023

Language: Английский

Citations

12
Enhancement of the structural, optical, and dispersion performance of polyvinyl alcohol via coronene additive for optoelectronic applications DOI
A.A. Al‐Muntaser, Eman Alzahrani,

Hala M. Abo‐Dief

et al.

Physica Scripta, Journal Year: 2023, Volume and Issue: 98(11), P. 115964 - 115964

Published: Oct. 11, 2023

Abstract Composite films made of polyvinyl alcohol (PVA) filled with various coronene concentrations were fabricated via the solution casting method. Several characterization techniques used to examine prepared samples. The x-ray diffraction study shows decreasing semi-crystalline properties in PVA/coronene composites increasing levels, thereby improving charge carrier mobility and enhancing conductivity. alterations chemical functional groups explored using Fourier-transform infrared spectroscopy (FTIR). impact molecules on optical characteristics PVA was investigated spectral ranges 190-2500 nm. composite exhibits higher UV blocking 190-400 nm wavelength range, suitable for notch filters like laser filters. By filling ratio from 0 wt% 3 wt%, both indirect direct band-gap decreased 5.19 eV 5.77 3.85 5.18 eV, respectively. single oscillator model (Wemple-DiDomenico) explain refractive index dispersion region. extracted values energy (E d ), o dielectric constant at infinite frequency ( ε ∞ lattice L ) samples increased 0.78 2.41 1.32 1.41 13.44 12.22 2.10 2.13, These changes parameters are due cross-linking between polymeric matrix coronene. As a result these improvements, could be applied flexible packaging applications optoelectronic devices solar cells or light-emitting diodes.

Language: Английский

Citations

11