Abstract

• The films forming composed of polyvinyl alcohol (PVA) and Aloe vera(AV) gel were prepared and characterized by different ratios of PVA/AV hydrogel films 1:1, 1:2 and 1:3 variations in the Aloe vera contentsby using the solvent casting technique. The physical parameters like the effect of the actual dose rate, measured dose rate and specific heat capacity of the Aloe vera leaf, natural gel and hydrogel were analyzed and compared with geometrical 0modificationby gamma radiation of a 137Cs source at room temperature. The specific heat capacity of Aloevera composite hydrogel was found to be 4.33 kJ/kgK, which was higher than that of liquid water4.20 kJ/kgK. The standard value of the total mass absorption coefficient (µm) with weighing factors of constituted elements in hydrogelby using Energy Dispersive X-Ray Fluorescence (EDXRF) analysis was calculated to be 0.069 cm2 /g. From the experimental results showed that the comparative analysis with the mass absorption coefficient (µm)value of film 3, used as absorber was obtained to be 0.065 cm2 /gby using Sodium Iodide Scintillation Detector [NaI(Tl)] STX-x64software ST 360 counter and approximately equal to the standard value.After studying the microstructure characterizations of all the composite films were performed by Scanning Electron Microscopy (SEM) analysis.