Improving electrical,optical and radiation shielding properties of polyvinyl alcohol yttrium oxide composites  

作　　者：Shams A.M.Issa D.E.Abulyazied Albandari W.Alrowaily H.A.Saudi E.S.Ali A.M.A.Henaish Hesham M.H.Zakaly 

机构地区：[1]Department of Physics,Faculty of Science,University of Tabuk,Tabuk,Saudi Arabia [2]Faculty of Science,Al-Azhar University,Assiut Branch,Assiut,71524,Egypt [3]Polymer Lab,Department of Petrochemical,Egyptian Petroleum Research Institute,Nasr City,Cairo,Egypt [4]Department of Physics,College of Science,Princess Nourah Bint Abdulrahman University,P.O.Box 84428,Riyadh,11671,Saudi Arabia [5]Physics Department,Faculty of Science,Al-Azhar University(Girls Branch),Nasr City,Cairo,Egypt [6]Institute of Physics and Technology,Ural Federal University,Yekaterinburg,620002,Russia [7]Physics Department,Faculty of Science,Tanta University,Tanta,31527,Egypt [8]Istinye University,Faculty of Engineering and Natural Sciences,Computer Engineering Department,Istanbul,34396,Turkey

出　　处：《Journal of Rare Earths》2023年第12期2002-2009,I0007,共9页稀土学报（英文版）

基　　金：funded by the Deanship of Scientific Research at Princess Nourah bint Abdulrahman University,through the Research Funding Program (FRP-1443-26)。

摘　　要：This research aims to study the impact of yttrium oxide on the radiation protection features of polyvinyl alcohol(PVA) for gamma shielding applications.The yttrium oxide(Y_(2)O_(3)) was instilled through the PVA matrix by different contents(x=0.1 wt%,0,3 wt%,0,7 wt%,0,9 wt%),The morphology of the prepared PVA/Y_(2)O_(3)composites was characterized using scanning electron microscopy(SEM).The samples were investigated using absorption edge,transmittance spectra and dielectric properties.The transmittance and the bandgap energy decrease as the Y2O3content increases while there is an increase in ε’ and ε" as well as the ac conductivity with the content increment of Y_(2)O_(3)till 0.7 wt%.The te mperature dependence of the dc conductivity was measured for all samples in the range of 260-460 K,and it increases with the temperature increasing.To correlate the electrical characteristics of the PVA/Y_(2)O_(3)composites with their structure and evaluate electrical properties with the help of equivalent circuit matching with the experimentally electrical response in the impedance spectrum,the radiation protection properties were also investigated to get the radiation shielding performance of these PVA/Y_(2)O_(3)composite films with varying Y_(2)O(3)content.The linear attenuation coefficient(μ),half value layer(T_(0.5)),and mass attenuation coefficient(μm) were measured.According to all obtained data,PVA/Y_(2)O_(3)composite films with various percentages(0.1 wt%,0.3 wt%,0.7 wt%,0.9 wt%) can be used as a radiation shielding material.

关 键 词：Yttriumoxide/PVA Electrical properties Optical properties Gamma shielding Rare earths 

分 类 号：TB332[一般工业技术—材料科学与工程]