Abstract
Radiation shielding using polymer composites is becoming more attractive because of their ease of production, lightness, ruggedness and availability. In this work, linear attenuation coefficient (LAC) and tenth value layer (TVL) of Cellulose Acetate - CdO - ZnO Polymer Composites of different concentrations of CdO and ZnO denoted as PB1, PB2 and PB3 were investigated against concrete and gypsum. Cellulose Acetate-CdO-ZnO Polymer Composites were prepared using the open mold cast technique and have been investigated for x-rays shielding ability. Cellulose acetate is a biodegradable good matrix, while CdO and ZnO are good fillers for absorbing x-rays in the diagnostic energy range. Scanning Electron Microscopy (SEM) technique was used to observe the uniform dispersal of fillers within the matrix. X-rays attenuation coefficients were calculated by XCOM computer code for all the samples using the average energies commonly used in diagnostic radiology practice - 20 keV, 30 keV, 40 keV and 60 keV. The SEM confirmed the dispersal of the fillers (CdO and ZnO) within the matrix. The result of this investigation showed that all the polymer composites (PB1, PB2 and PB3) have higher LACs and lower TVLs over gypsum and concrete at 20 keV, 30 keV, 40 keV and 60 keV. Tenth Value Layers (TVLs) of all the polymer composites is less than 1 cm at 20 keV, 30 keV and 40 keV.
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