Optical, Structural, Electrical Characterization of (Polyvinyl Alcohol–Carboxymethyl Cellulose-Manganese Dioxide) Nanocomposite Fabricated via Laser Ablation

Pashameah, Rami Adel; El-Sharnouby, Mohamed; El-Askary, Ahmad; El‐Morsy, M.A.; Ahmed, Hoda A.; Menazea, A.A.

doi:10.1007/s10904-022-02311-2

Cited by 15 publications

(2 citation statements)

References 42 publications

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“…Moreover, the optical constants of the PVA/CS blend were enhanced by filling it with graphene/Fe 2 O 3 for energy storage applications [ 14 ]. The Pashameah group concluded that the electrical performance of PVA/CMC was enhanced by MnO 2 incorporation for optoelectronic applications [ 15 ]. The Norouzi research group showed that a PVA/CS blend adapted with TiO 2 /graphene oxide or carbon quantum dots could improve wound healing [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Modification of the Structure and Linear/Nonlinear Optical Characteristics of PVA/Chitosan Blend through CuO Doping for Eco-Friendly Applications

Alharthi

Badawi

2023

Polymers

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The solution casting technique is utilized to fabricate blank and CuO-doped polyvinyl alcohol/chitosan (PVA/CS) blends for eco-friendly applications. The structure and surface morphologies of prepared samples were explored by Fourier transform infrared (FT-IR) spectrophotometry and scanning electron microscopy (SEM), respectively. FT-IR analysis reveals the incorporation of CuO particles within the PVA/CS structure. SEM analysis exposes the well-dispersion of CuO particles in the host medium. The linear/nonlinear optical characteristics were found on the basis of UV-visible-NIR measurements. The transmittance of the PVA/CS decreases upon CuO increasing to 20.0 wt%. The optical bandgap (Eg dir./Eg ind.) decreases from 5.38/4.67 eV (blank PVA/CS) to 3.72/3.12 eV (20.0 wt% CuO-PVA/CS). An obvious improvement in the optical constants of the PVA/CS blend is achieved by CuO doping. The Wemple-DiDomenico (WDD) and Sellmeier oscillator models were utilized to examine the CuO role dispersion behavior of the PVA/CS blend. The optical analysis shows clear enrichment of the optical parameters of the PVA/CS host. The novel findings in the current study nominate CuO-doped PVA/CS films for applications in linear/nonlinear optical devices.

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Section: Introductionmentioning

confidence: 99%

Modification of the Structure and Linear/Nonlinear Optical Characteristics of PVA/Chitosan Blend through CuO Doping for Eco-Friendly Applications

Alharthi

Badawi

2023

Polymers

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“…1a. Furthermore, the diffraction peaks at 2θ = 19.7° are moved towards to the reduced 2θ, as well as the diffraction intensity increases when compared to PVA [22].…”

Section: Resultsmentioning

confidence: 93%

Effects of inorganic MnO2 and ZnO nanofillers on the structural investigations and dielectric behaviour of PVA polymeric materials

Alotaibi¹,

Alyousef²,

Atta³

et al. 2023

JOR

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Different contents of manganese oxide (MnO2) and zinc oxide (ZnO) were combined with polyvinyl alcohol (PVA) to form flexi MnO2/PVA as well as ZnO/PVA nanocomposite films. XRD as well SEM methodologies are used to evaluate the properties of the fabricated films. The XRD analysis demonstrates that MnO2/PVA as well as ZnO/PVA composites were effectively fabricated. The SEM pictures show that MnO2 and ZnO are uniformly dispersed throughout the PVA polymeric chains. Furthermore, the electrical conductivities, dielectric permittivity, electric moduli behaviors, as well as dielectric impedances of PVA, MnO2/PVA, ZnO/PVA films were recorded using LCR method in frequencies 102 to 106 Hz. At 105 Hz, the dielectric enhanced from 2.05 for PVA to 5.5 on PVA/5%ZnO and 4.15 for PVA/10%MnO2, while the conductivities increase from 1.05x10-7 S/cm for PVA to 4.01x10-7 S/cm for PVA/5%ZnO and to 5.4x10-7 S/cm for PVA/10%MnO2. The current work pave the way to using of ZnO/PVA and MnO2/PVA flexi nanocomposite films in a different uses including battery, super-capacitors, as well as storage devices.

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Dielectric behavior and AC conductivity of PEO/CMC polymer blend incorporated with gold nanoparticles produced by laser ablation

Abdelghany

Elashmawi

Al-Shamari

et al. 2023

J Mater Sci: Mater Electron

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Gold nanoparticles (AuNPs) were synthesized via laser ablation technique. PEO/CMC-AuNPs nanocomposites were prepared using the casting method. Water was chosen as a solvent because it was considered an eco-friendly solvent compared to other organic solvents. SEM micrographs reveal uniformly distributed AuNPs on the sample surface. 3D images were used to estimate the roughness parameters. The $${\varepsilon }^{{\prime}}$$ ε ′ and $${\varepsilon }^{{\prime\prime} }$$ ε ″ values decrease at high frequencies due to the short time allotted for dipole aligning. The behavior of tan$$\delta$$ δ was attributed to more dipoles that cannot follow the oscillating electric field. The values of M′ approach zero at low frequencies due to the insignificant effect of electrode polarization. The presence of semicircles below the real axis M′ implies a dispersion in relaxation time, indicating that the dielectric relaxation process follows the non-Debye model. The two regions' curves imply that the samples contain an electrical conduction mechanism of the hopping type. The conductivity was increased with the increase of AuNPs due to an increase in transition probability for hopping electrons. From the obtained results, the PEO/CMC-AuNPs nanocomposites can be considered superior to others in different biological applications.

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Optical, Structural, Electrical Characterization of (Polyvinyl Alcohol–Carboxymethyl Cellulose-Manganese Dioxide) Nanocomposite Fabricated via Laser Ablation

Cited by 15 publications

References 42 publications

Modification of the Structure and Linear/Nonlinear Optical Characteristics of PVA/Chitosan Blend through CuO Doping for Eco-Friendly Applications

Modification of the Structure and Linear/Nonlinear Optical Characteristics of PVA/Chitosan Blend through CuO Doping for Eco-Friendly Applications

Effects of inorganic MnO2 and ZnO nanofillers on the structural investigations and dielectric behaviour of PVA polymeric materials

Dielectric behavior and AC conductivity of PEO/CMC polymer blend incorporated with gold nanoparticles produced by laser ablation

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