Fabrication and Characterization of the PMMA/G/Ag Nanocomposite by Pulsed Laser Ablation (PLAL)

Mohammed, Musaab Khudhur; Al-Dahash, Ghaleb; Al-Nafiey, Amer

doi:10.5101/nbe.v14i1.p15-22

Cited by 6 publications

(5 citation statements)

References 29 publications

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“…Moreover, ZnSe shows a simple concentration-dependent change in polymer structure after addition of the dopant; this is evident from the most concentrated sample (5 wt.%), in which the ZnSe NP filled the chain polymer. Furthermore, this result agrees with those of previous reports [28,29].…”

Section: Resultssupporting

confidence: 94%

The Structural and Optical Properties of Polyvinyl Pyrrolidone-doped with Zinc Selenide

Hadi,

Mohammed,

Musa

et al. 2024

Nano Biomedicine and Engineering

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This study describes a method for solution casting of polyvinyl pyrrolidone (PVP) reinforced with 0 wt.%, 1 wt.%, 3 wt.%, and 5 wt.% zinc selenide (ZnSe). After production, scanning electron microscopy (SEM) was used to examine the nanocomposite surfaces, and thus confirmed the constant dispersion of ZnSe nanoparticles (NPs) within PVP. Subsequent Fourier transformation infrared spectroscopy (FTIR) analysis showed that the ZnSe NPs and PVP matrix interacted physically. Analysis of the optical properties of PVP-ZnSe nanocomposites showed that increased ZnSe NPs concentration in the PVP solution increased absorbance and decreased transmittance. Further integration of ZnSe NPs at a concentration of 6 wt.% within the PVP-ZnSe nanocomposite resulted in a decrease in the energy gap. Specifically, we observed a decrease in the energy gap from 4 to 3.1 eV for the allowed indirect transition and from 3.94 to 2.9 eV for the forbidden indirect transition. Overall, the weight percentage of ZnSe NPs demonstrates a direct relationship with their absorption factor, extinction factor, index of refraction, real and imaginary components of dielectric constants, and optical conductivity. These results indicate that PVP-ZnSe nanocomposites possess exceptional optical capabilities, and may be suitable for use in photodetector applications, especially as ultraviolet (UV) detectors.

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Section: Resultssupporting

confidence: 94%

The Structural and Optical Properties of Polyvinyl Pyrrolidone-doped with Zinc Selenide

Hadi,

Mohammed,

Musa

et al. 2024

Nano Biomedicine and Engineering

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“…This may be attributed to the insufficient energy of incident photons at longer wavelengths that prevent them from interacting with atoms and thereby allows the photon to be transmitted. These results are consistent with those in the literature [19,20]. The transmittance (T) is given by the following equation [21]:…”

Section: Resultssupporting

confidence: 92%

Preparation and Investigation of Structural and Optical Properties of Poly(methyl methacrylate)/Indium Oxide Nanocomposites for Antibacterial Application

Mohammed,

Sami,

Salam

et al. 2024

Nano Biomedicine and Engineering

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This study describes the preparation of poly(methyl methacrylate) (PMMA) composites reinforced with various loadings (0 wt.%, 1.2 wt.%, 2.4 wt.%, and 3.6 wt.%) of indium oxide (In 2 O 3 ) using solution casting. Fourier-transformation infrared spectroscopy was used to analyze the structural characteristics of the nanocomposite and confirm the physical interactions between In 2 O 3 nanoparticles (NPs) and the PMMA matrix. Field emission scanning electron microscopy was used to examine the nanocomposite surface and showed that the In 2 O 3 NPs were distributed and homogenous through the PMMA matrix. An increase in the ratio of In 2 O 3 NPs in the PMMA changed the optical characteristics with an increase in the absorbance, absorption coefficient, refractive index, extinction coefficient, and real and imaginary dielectric constants and a decrease in the transmittance and indirect energy gap. The absorption coefficient was < 10 4 cm −1 , confirming the indirect electron transition. The antibacterial effect of PMMA/In 2 O 3 films were examined against Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli and demonstrated an increase in inhibition zone diameter with an increase in In 2 O 3 NP content. Thus, the PMMA/In 2 O 3 nanocomposite exhibited antibacterial activity.

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“…The α of nanocomposites rises with the rises of the content of Ag NPs, this is due to the rise of various charge carriers and therefore rising the absorption and absorption coefficient for (PVA/PAA/Ag) nanocomposites. This result agrees with [20]. The extinction coefficient (K) was calculated by using the equation (3).…”

Section: -Results and Discussionsupporting

confidence: 86%

“…The inhibition zone for gram-positive and gram-negative was increased with increase the concentrations of Ag nanoparticles. The inhibition zone diameter(20) mm when (0.2) cm 2 is added to bacterial medium type E. coli. The inhibition zone diameter (25) mm when (0.2) cm 2 is added to bacterial medium type S. aureus.…”

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confidence: 99%

Fabrication and Investigation of (PVA/PAA/Ag) nanocomposites for Antibacterial Application

Obeid,

Rebee

2023

Preprint

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A nanocomposite (PVA/PAA/Ag) was prepared by casting method in different concentration of the nanomaterial (Ag) represented by (2,4,6 and 8(%wt. the structural, optical and antibacterial characteristic were studied. The optical microscope (OM) proved the silver nanoparticles form a continuous network within the blend at a concentration of (8wt.%). SEM measurements reveal the surface morphology of the (PVA/PAA/Ag) nanocomposites films, which are homogeneous and coherent with aggregates or chunks scattered at random on the top surface. Optical measurement showed an increase in the absorbance with an increase in the concentration of the nanomaterial, while the transmission and gap of energy decreased, also the coefficient of absorption, coefficient of extinction, index of refractive, real and imaginary parts of dielectric constants and optical conductivity are rising with the rise of the content of Ag NPs. The inhibition zone for gram-positive and gram-negative was increased with increase the content of Ag nanoparticles.

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Fabrication and Characterization of the PMMA/G/Ag Nanocomposite by Pulsed Laser Ablation (PLAL)

Cited by 6 publications

References 29 publications

The Structural and Optical Properties of Polyvinyl Pyrrolidone-doped with Zinc Selenide

The Structural and Optical Properties of Polyvinyl Pyrrolidone-doped with Zinc Selenide

Preparation and Investigation of Structural and Optical Properties of Poly(methyl methacrylate)/Indium Oxide Nanocomposites for Antibacterial Application

Fabrication and Investigation of (PVA/PAA/Ag) nanocomposites for Antibacterial Application

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