Enhanced Electrical Conductivity and Dielectric Performance of Ternary Nanocomposite Film of PEMA/PS/Silver NPs Synthesized by Laser Ablation

El-Sharnouby, Mohamed; Askary, Ahmad El; Awwad, Nasser S.; Ibrahium, Hala A.; Moustapha, Moustapha E.; Farea, M. O.; Menazea, A.A.; Abdelghany, A. M.

doi:10.1007/s10904-022-02286-0

Cited by 18 publications

(8 citation statements)

References 57 publications

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“…Figure displays the FT-IR spectra of both virgin CMC/CS blends and CMC/CS doped with different concentrations of Ag NPs. Consistent with our prior investigation, the host polymers’ functional groups displayed a broad OH stretching vibration band at around 3271 cm –1 and a C–H stretching vibration band at approximately 2923 cm –1 . Furthermore, the FTIR spectra indicated the existence of the asymmetric stretching vibration associated with carboxylate groups at 1596 cm –1 .…”

Section: Resultsmentioning

confidence: 99%

Fabrication and Characterization of Silver Nanoparticle-Doped Chitosan/Carboxymethyl Cellulose Nanocomposites for Optoelectronic and Biological Applications

Ragab,

Diab,

AlElaimi

et al. 2024

ACS Omega

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The synthesis of nanoparticles using environmentally friendly methods for applications in fields such as food packaging and biomedicine has been gaining increasing attention. Organic–inorganic nanostructures offer opportunities to create innovative materials suitable for use in optoelectronics and biological applications. In this study, we focused on producing nanocomposite films by blending carboxymethyl cellulose (CMC) and chitosan (CS) polymers in equal proportions (50/50 wt %) and adding silver nanoparticles (Ag NPs) through a solution casting process. Our objective was to examine how the introduction of Ag NPs influenced the structural, optical, mechanical, electrical, and antibacterial properties of the virgin CMC/CS composites. XRD patterns of the prepared samples indicated the presence of crystalline Ag phases within the CMC/CS blend. FT-IR spectroscopy showed the primary vibrational peaks associated with CMC and CS, which exhibited reduced intensity after the addition of Ag NPs. The UV absorption of the nanocomposites exhibited a gradual increase and a shift toward longer wavelengths. The electrical properties are enhanced with higher concentrations of Ag NPs. An increase in the content of Ag NPs resulted in a corresponding enhancement of antibacterial activity against both Staphylococcus aureus and Escherichia coli. The CMC/CS-Ag-doped films demonstrated significant enhancements in Young’s modulus (Y), tensile stress (σt), and elongation at break (εB). These findings suggest that these nanocomposite films hold promise for potential applications in optoelectronics and biological fields.

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Section: Resultsmentioning

confidence: 99%

Fabrication and Characterization of Silver Nanoparticle-Doped Chitosan/Carboxymethyl Cellulose Nanocomposites for Optoelectronic and Biological Applications

Ragab,

Diab,

AlElaimi

et al. 2024

ACS Omega

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“…The s ‐values ranged from 0.92 to 0.70, all of which were below 1 and decreased with increasing amounts of copper vanadate NPs. The observation of this pattern implies that the conduction mechanism corresponds to the process known as correlated barrier hopping (CBH) 50,59,60 …”

Section: Resultsmentioning

confidence: 99%

Structural, optical, and dielectric characteristics of chitosan/hydroxypropyl cellulose‐modified copper vanadate nanoparticles

Al‐kalali,

Abdelghany,

Bin Anooz

et al. 2023

Polymer Engineering & Sci

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Chitosan (Cs) and hydroxypropyl cellulose (HPC) blend films were created and incorporated with copper vanadate nanoparticles. The films were characterized using various techniques, including x‐ray diffraction (XRD), attenuated total reflectance‐Fourier transform infrared (ATR‐FTIR), TEM, SEM, UV/vis spectroscopy, dielectric properties, and AC conductivity. The XRD analysis showed that the prepared films had amorphous characteristics. FT‐IR spectra indicated interactions between the Cs/HPC virgin polymers and copper vanadate nanoparticles. TEM analysis showed that the most prevalent size range of the nanoparticles was 20–60 nm. SEM micrographs revealed surface homogeneity at lower copper vanadate nanoparticle contents but increased inhomogeneity with higher contents. The prepared films showed a decrease in the optical energy gap and an increase in refractive index with increasing copper vanadate nanoparticle content. Copper vanadate nanoparticles enhance AC conductivity in Cs/HPC polymer blend. Dielectric analysis proved the suitability of the films for electroactive polymer applications.Highlights The casting process was used to prepare Cs/HPC—copper vanadate NPs films. XRD shows increased amorphousness post‐addition of copper vanadate NPs. SEM images revealed an increase in inhomogeneity with higher contents of copper vanadate NPs. The optical band gap decreased as the content of copper vanadate NPs increased. Copper vanadate nanoparticles greatly improve electrical conductivity and relaxation time.

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“…Copper oxide nanoparticles (CuO NPs) were synthesized successfully by laser ablation technique in aqueous media [ 21 , 22 ]. A high purity copper target of dimension 4 × 4 × 2 (mm) was polished and sonicated before subjecting to a Nd:YAG nanosecond pulsed laser adopting a 1064 nm beam of width 6 nm and power 4 Watt with pulse frequency 10 Hz.…”

Section: Experimental Partmentioning

confidence: 99%

Preparation and physicochemical studies on polymeric nanocomposites containing copper oxide nanoparticles

Alsheheri

Alamshany

Abdelaal

2023

Designed Monomers and Polymers

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The current work aims to modify carboxymethyl cellulose (CMC) and polyvinylpyrrolidone (PVP) with copper oxide nanoparticles (CuO NPs) to obtain new nanocomposites of CMC, PVP, and CuO NPs (CMC/PVP/CuO NPs) with distinguished properties. The interaction between the components of the nanocomposites was suggested and supported by using Gaussian 09W 07 Software and the average particle size was manually determined from TEM images using ImageJ software developed at the National Institutes of Health (NIH). The preparation methods were optimized, and the obtained nanocomposites were characterized with suitable techniques to explore their characteristics and to help expect or predict the suitable fields of applications.

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Enhanced Electrical Conductivity and Dielectric Performance of Ternary Nanocomposite Film of PEMA/PS/Silver NPs Synthesized by Laser Ablation

Cited by 18 publications

References 57 publications

Fabrication and Characterization of Silver Nanoparticle-Doped Chitosan/Carboxymethyl Cellulose Nanocomposites for Optoelectronic and Biological Applications

Fabrication and Characterization of Silver Nanoparticle-Doped Chitosan/Carboxymethyl Cellulose Nanocomposites for Optoelectronic and Biological Applications

Structural, optical, and dielectric characteristics of chitosan/hydroxypropyl cellulose‐modified copper vanadate nanoparticles

Preparation and physicochemical studies on polymeric nanocomposites containing copper oxide nanoparticles

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