Fabrication, structural investigation and comparative optical characterization of copper polymer nanocomposites

Atta, A.

doi:10.1007/s00339-020-03990-9

Cited by 8 publications

(5 citation statements)

References 47 publications

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“…In addition, the PVA indirect bandgap decreased from 4.93 to 2.39 eV by filling with 44.4 wt% of SnBr2 55 . The band tail energy E u is represented by the following Urbach mathematical formula 56

α goodbreak= B \exp ((), italichv / E_{u}),

in which B represents constant and E u represents the band tail (Urbach tail), that represents the localized state width.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of carbon nanotubes/titanium dioxide and study of its effect on the optical, dielectric, and mechanical properties of polyvinyl alcohol/sodium alginate for energy storage devices

Alghamdi

Rajeh

2021

Intl J of Energy Research

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Summary In this system, the solvent casting technique was used to prepare polymer nanocomposites from the multiwalled carbon nanotubes (MWCNTs)/TiO2 nanoparticles (as nanofiller)‐doped polyvinyl alcohol/sodium alginate (PVA/SA) blend. The modification in the structure of the nanocomposites is proved by the studies of X‐ray diffraction (XRD) and Fourier transform infrared (FTIR) spectra. The transmission electron microscopy (TEM) analysis evidenced that the MWCNTs/TiO2 nanoparticles were incorporated in the PVA/SA polymer. The optical energy gap of the polymer blend is reduced after incorporating the MWCNTs/TiO2. The thermogravimetric analysis (TGA) has demonstrated the nanocomposites' excellent thermal stability compared to pure blend, as well as its enhancement with the addition of MWCNTs/TiO2 nanoparticles. The AC conductivity and dielectric properties of the nanocomposite enhanced as compared to pure PVA/SA. Also, the electrical properties were higher due to the loading of MWCNTs/TiO2 nanoparticles. The increase in elongation at the break and higher tensile strength of nanocomposites compared to pure polymer blends suggested that MWCNTs/TiO2 nanoparticles in the polymer matrix provided greater reinforcement. Thus, it was generally concluded that the polymer nanocomposite is better than the pure blend due to its superior dielectric constant, thermal, optical, and mechanical properties, which make them useful in the manufacture of nanoelectronic devices of high energy storage.

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α goodbreak= B \exp ((), italichv / E_{u}),

in which B represents constant and E u represents the band tail (Urbach tail), that represents the localized state width.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of carbon nanotubes/titanium dioxide and study of its effect on the optical, dielectric, and mechanical properties of polyvinyl alcohol/sodium alginate for energy storage devices

Alghamdi

Rajeh

2021

Intl J of Energy Research

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“…This behavior is caused by the Cu effect, which enhances the performance of PTFE polymer chain delocalization. More important, the average particle size (D) of CuNPs have determined using Scherrer equation [19]:…”

Section: Resultsmentioning

confidence: 99%

“…The average calculated Cu crystallite size is 16 nm, which in turn improves the crystalline structure of the Cu/PTFE composite films. For comparative results, Atta succeeded for deposited copper nanoparticles (CuNPs) on PET substrate using cold cathode ion source sputtering technique, the estimated crystallite size of deposited Cu is found in the range of 31 nm [19].…”

Section: Resultsmentioning

confidence: 99%

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Surface Physical Properties of Ion Beam Sputtered Copper Thin Films on Poly Tetrafluoroethylene

Atta¹,

Abdeltwab²,

Bek³

2021

Surf. Topogr.: Metrol. Prop.

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In this study thin copper (Cu) films are deposited on poly tetrafluoroethylene (PTFE) substrate using ion beam sputtering technique. The films are characterized using Raman spectroscopy, UV–VIS spectroscopy and atomic force microscope (AFM) techniques. The Raman spectrum shows some decrease in the intensities of Raman bands for Cu/PTFE film than pristine PTFE. UV–VIS transmittance spectra display that the optical transmission reduces from ~75% for pristine PTFE to ~0.20% after 60 min of deposition due to Cu nanoparticles dispersed in PTFE. The surface roughness is increased from 39.4 nm for PTFE to 75.9 nm, while the adhesion force is increased from 9.6 nN to 14.7 nN and Young’s modulus is enhanced from 0.58 GPa to 1.46 GPa after 40 min of Cu deposition time. The DC electrical conductivity at an applied voltage of 200 V is improved from 3.88 × 10–8 S.cm−1 for PTFE to 5.3 × 10–8 S.cm−1 after 60 min of deposition at room temperature. The fabricated Cu/PTFE films exhibit excellent surface properties, which demote that Cu/PTFE films could serve as a low cost material for a broad range of electrical and charge storing devices.

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“…17 Because HPC is a polymer formed on the bases of the polysaccharide's main chain, researchers can learn more about the interaction of organic and inorganic elements by studying transitional temperatures under the influence of nanoparticles. [18][19][20] Furthermore, the thermal efficiency of the final composite materials is essential to ensure that the nanocomposite product is compatible with a variety of applications. 21 Abu Krorra et al 22 investigated the effect of consolidation materials on transparent papers, comparing hydroxypropyl cellulose to nanomaterials like zinc oxide nanoparticles and nanocellulose, as well as a hybrid mixture of HPC and ZnONPs and HPC and nanocellulose to improve the properties of both materials in the hybrid mixture.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of composites from hydroxypropyl cellulose:iron (III) oxide nanoparticles

Alharbi

2023

Polymers and Polymer Composites

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In the present work, hydroxypropyl cellulose and hematite (α-Fe2O3) nanoparticles (HPC:Fe2O3NPs) composites in various ratios (20:0.5, 20:1, 20:1.5, and 20:2 wt:wt) were synthesised. X-ray diffraction (XRD), scanning electron microscopy (SEM), FTIR spectroscopy, and thermal analysis (DSC, and TGA) were used to examine the structural configuration and thermal properties of the produced composites. The IR crystallinity indices (TCI, LOI, and HBI) were also computed. XRD patterns reveal a mixture of amorphous HPC polymer components and Fe2O3NPs which identifies the relationship between the characteristics of the structure. Distributions and dispersions of Fe2O3NPs on the surface of HPC are apparent in SEM. FTIR absorbance spectra reveal that as the quantity of Fe2O3NPs increased alterations in the intensity, area, and band width were found indicating a change in the molecular configuration of HPC. Variations in the shape, size, and shifts in melting temperature to higher temperatures were found by DSC and TGA when the amount of Fe2O3NPs is increased which could be due to interactions between HPC and Fe2O3NPs. The antibacterial activity of the nanocomposites was tested against Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli bacteria. The composites have good antibacterial activity, confirmed a high potential of antibacterial activity. The findings demonstrated that HPC:Fe2O3NPs composites lead to technological applications in a variety of medical applications.

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Fabrication, structural investigation and comparative optical characterization of copper polymer nanocomposites

Cited by 8 publications

References 47 publications

Synthesis of carbon nanotubes/titanium dioxide and study of its effect on the optical, dielectric, and mechanical properties of polyvinyl alcohol/sodium alginate for energy storage devices

Synthesis of carbon nanotubes/titanium dioxide and study of its effect on the optical, dielectric, and mechanical properties of polyvinyl alcohol/sodium alginate for energy storage devices

Surface Physical Properties of Ion Beam Sputtered Copper Thin Films on Poly Tetrafluoroethylene

Synthesis of composites from hydroxypropyl cellulose:iron (III) oxide nanoparticles

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