الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 109 |  |  |
| | | from | 109 | | |
Abstract
In this research, Lead-free polymer composites have been designed to be used as a Gamma radiation shielding and protection agent, reinforced with different concentrations of nanomaterials (10-30-50) %wt. by using Polyvinyl alcohol (PVA) as a matrix material with various metal oxides as reinforcing agents, such as Iron (III) oxide, Graphene oxide, Zinc oxide. The morphology of the samples was investigated using X-ray Diffraction (XRD), Scanning Electron Microscope (SEM) and Transmission Electron Microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) has been used to examine the presence of hydrogen bonding and its effect on crystallinity. The thermal properties were examined by (TGA-DSC), and the size of nanoparticles has been determined using Zeta sizer. Raman Spectroscopy characterized the Go nanocomposite film. Following to the above steps, the linear attenuation coefficient of different polymeric nanomaterial has been experimentally calculated using the photons of gamma rays emitted from radioactive sources (Cs137) at energy (662) KeV by using gamma spectrometer which is connected with sodium iodide activated with thallium detector, as a function of the absorber thickness and energy. Comparing the linear attenuation parameters has shown that the nanocomposite of magnetite nanoparticles and PVA film is a promising radiation material, in reasonable thickness and weight, with various industrial applications.