Gamma-Irradiation Effects on the Spectral and Amplified Spontaneous Emission (ASE) Properties of Conjugated Polymers in Solution

AlSalhi, Mohamad S.; Prasad, Saradh; Devaraj, D.; Mustafa, Ziad S Abo

doi:10.3390/polym9010007

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…The experimental studies such as in [31][32][33] show an interesting change of polymer composition on crosslinking in the presence of gamma-ray irradiation. The impact of gamma (γ) radiation on polymers in conjugated structures has also been shown [34]. Some researchers have also put forward some experimental results of the irradiation with a 60 Co gamma-ray of a high-density polyethylene model to address the irradiation effect on the compression and tensile parameters [35].…”

Section: Pmma Pbomentioning

confidence: 99%

Radiation-induced changes on poly(methyl methacrylate) (PMMA)/lead oxide (PbO) composite nanostructure

2019

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In the present study, results of the 60 Co gamma-ray irradiation effect on the structural properties of the PMMA/PbO composite nanomaterial are presented. In order to explore the 60 Co gammaray irradiation effect on PMMA/PbO thin film, the dielectric parameters have been calculated before and after two higher irradiation doses at room temperature in the frequency value of 1 MHz and 500 kHz. The important changes caused by the higher radiation in the dielectric properties in the depletion and accumulation regions have been attributed to the restructuring and reordering of the charges at the interface states.

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Section: Pmma Pbomentioning

confidence: 99%

Radiation-induced changes on poly(methyl methacrylate) (PMMA)/lead oxide (PbO) composite nanostructure

2019

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“…The application of gamma irradiation to biodegradable films has been reported to alter the characteristics and subsequently improved the mechanical and barrier properties of the films [6]. It was necessary to irradiate biodegradable films to induce a possible crosslink of the macromolecules as reported in the literature [8][9][10]. It must, however, be noted that the use of gamma irradiation on a packaged product or material has no hazardous effect [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Extracted Compounds from Neem Leaves as Antimicrobial Agent on the Physico-Chemical Properties of Seaweed-Based Biopolymer Films

et al. 2020

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Neem leaves extract was incorporated into the matrix of seaweed biopolymer, and the seaweed-neem biocomposite films were irradiated with various doses of gamma irradiation (0.5, 1.5, 2.5, 3.5, and 4.5 kGy). The physical, barrier, antimicrobial, and mechanical properties of the films were studied. The incorporation of 5% w/w neem leaves extract into a seaweed-based film, and gamma irradiation dose of 2.5 kGy was most effective for improved properties of the film. The results showed that the interfacial interaction of the seaweed-neem improved with physical changes in colour and opacity. The water solubility, moisture content, and water vapour permeability and biodegradability rate of the film reduced. The contact angle values increased, which was interpreted as improved hydrophobicity. The tensile strength and modulus of the films increased, while the elongation of the composite films decreased compared to the control film. The film’s antimicrobial activities against bacteria were improved. Thus, neem leaves extract in combination with the application of gamma irradiation enhanced the performance properties of the film that has potential as packaging material.

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“…Furthermore, the introduction of g-C 3 N 4 nanoparticles in the PVC matrix is accompanied by a decrease in the intensity of peaks characteristic for the polymeric matrix. Also, we note that the peak at 1075 cm − 1 became weaker when g-C3N4 nanoparticles were added to the PVC and The new peak appeared at 3197 cm − 1 [40].…”

Section: Ftir Spectroscopic Analysismentioning

confidence: 76%

Synthesis and characterization of gamma irradiated polyvinyl chloride/graphite carbon nitride nanocomposite films for electronic applications

Sharaf

Elhady

Abdel-Galil

et al. 2023

Journal of Thermoplastic Composite Materials

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This study introduces the synthesis of graphite-carbon nitrite (g-C3N4) using thermal treatment of urea. The prepared powder is treated to generate nanoparticles. The structure and grain size of the g-C3N4 have been obtained via X-ray diffraction (XRD) technique and transmission electron microscope. The graphite-carbon nitride on Polyvinyl Chloride (PVC/g-C3N4) nanocomposite films were produced by mixing different concentrations (0, 3, 5, 7, 10 and 20 wt%) of nanoparticles with Polyvinyl Chloride (PVC) solutions. The structure and elemental composition of the prepared nanocomposites films PVC/g-C3N4 were studied by using XRD, scanning electron microscope (SEM), (EDX), infrared spectroscopy (IR) and electron spin resonance (ESR). Also, spectral distribution of the optical absorbance for the PVC/g-C3N4 nanocomposites films was studied in the wavelength range from 190 to 1100 nm. Thermal stability of the investigated nanocomposites films was investigated by thermal gravimetric analysis technique (TGA). The effect of various concentrations of the g-C3N4 and different doses of gamma-rays on the polymeric matrix and electrical properties of PVC film also has been investigated. The g-C3N4 additives on PVC influenced the crystal structure and optical properties of the nanocomposites films. The nanocomposite film with 10% g-C3N4 achieved higher values of the refractive index and optical conductivity compared with the other films. With different doses of gamma-ray irradiation, the crystal structure and optical properties of PVC/g-C3N4 nanocomposite films were changed in accordance to the cross-linking process within the PVC polymeric chains where a structural rearrangement can be occurred as a result of gamma irradiation. The elemental composition and morphological study of PVC/g-C3N4 nanocomposite films have been checked by the scanning electron microscopy which indicated the homogeneous dispersion of g-C3N4 nanoparticles within PVC network. Finally, electrical properties of PVC/g-C3N4 nanocomposite films with different ratios and distinct gamma doses also have been studied.

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Gamma-Irradiation Effects on the Spectral and Amplified Spontaneous Emission (ASE) Properties of Conjugated Polymers in Solution

Cited by 5 publications

References 32 publications

Radiation-induced changes on poly(methyl methacrylate) (PMMA)/lead oxide (PbO) composite nanostructure

Radiation-induced changes on poly(methyl methacrylate) (PMMA)/lead oxide (PbO) composite nanostructure

Extracted Compounds from Neem Leaves as Antimicrobial Agent on the Physico-Chemical Properties of Seaweed-Based Biopolymer Films

Synthesis and characterization of gamma irradiated polyvinyl chloride/graphite carbon nitride nanocomposite films for electronic applications

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