Gamma irradiation‐induced modifications in the structural, thermal, and optical properties of polyvinyl alcohol‐polyethylene glycol/cobalt oxide nanocomposite films

2020 ◽  
Author(s):  
Ali A. Alhazime ◽  
Mai M. ME. Barakat ◽  
Kaoutar Benthami ◽  
Samir A. Nouh
Keyword(s):  
Optical Properties ◽  
Polyethylene Glycol ◽  
Polyvinyl Alcohol ◽  
Gamma Irradiation ◽  
Cobalt Oxide ◽  
Nanocomposite Films

Effect of gamma radiation on the structural, thermal and optical properties of PMMA/Sn0.75Fe0.25S2 nanocomposite

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ali A. Alhazime ◽  
Nesreen T. El-Shamy ◽  
Kaoutar Benthami ◽  
Mai ME. Barakat ◽  
Samir A. Nouh
Keyword(s):  
Thermal Stability ◽  
Optical Properties ◽  
Gamma Irradiation ◽  
Optical Band Gap ◽  
Color Variation ◽  
Nanocomposite Films ◽  
Color Changes ◽  
Gamma Irradiated ◽  
Intermolecular Crosslinking ◽  
Amorphous Part

AbstractNanocomposite films of polymethylmethacrylate PMMA with Sn0.75Fe0.25S2 nanoparticles (NPs) were fabricated by both thermolysis and casting techniques. Changes in PMMA/Sn0.75Fe0.25S2 nanocomposite (NCP) due to gamma irradiation have been measured. XRD results indicate that the gamma doses of 10–80 kGy cause intermolecular crosslinking that reduces the ordered portion in the NPs. Bonding between the NPs and the host PMMA was confirmed by FTIR. TGA results indicate an enhancement in thermal stability in the NCP films irradiated with doses 20–80 kGy. The optical band gap was reduced from 3.23 to 2.47 eV upon gamma irradiation up to 80 kGy due bonding between the NPs and PMMA which enhanced the amorphous part of the NPs. Finally, the color variation between the blank and irradiated films (ΔE) was determined. Color changes immensely when the PMMA/Sn0.75Fe0.25S2 NCP films are gamma irradiated. Values of ΔE were as much as 31.6 which is an acceptable match in commercial reproduction on printing presses.

Tailoring the structural, thermal, photoluminescence, and optical properties of flexible PVA/Gd2O3 nanocomposite films by gamma irradiation

2021 ◽  
Vol 127 (10) ◽  
Author(s):  
M. I. A. Abdel Maksoud ◽  
Soraya Abdelhaleem ◽  
Eman K. Tawfik ◽  
Ahmed G. Bedir ◽  
Asmaa S. Morshedy
Keyword(s):  
Optical Properties ◽  
Gamma Irradiation ◽  
Nanocomposite Films

scholarly journals Synthesis, characterization and study of optical properties of polyvinyl alcohol/ CaF2 nanocomposite films

2012 ◽  
Vol 19 (6) ◽  
pp. 1979-1983 ◽  
Author(s):  
O. Nakhaei ◽  
N. Shahtahmassebi ◽  
M. Rezaeeroknabadi ◽  
M.M. Bagheri Mohagheghi
Keyword(s):  
Optical Properties ◽  
Polyvinyl Alcohol ◽  
Nanocomposite Films
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