STUDIES ON SOME GAMMA RADIATION RESISTANT PVC-PLASTISOL FORMULATIONS

Abstract

An attempt is made to develop the radiation resistant PVC sheets for making aprons for the personnel working in the areas contaminated with radiation in the oncology departments in the hospitals and also to protect from accidental exposure of high radiation dose during medical examinations. This includes development of radiation resistant PVC plastisol formulation and making of sheets from it, study of physico-mechanical and thermal stability properties of developed compositions, study the effect of radiation on the physico-mechanical properties of developed compositions and weatherability study of developed compositions. DOP concentration was changed apart from changing croslinking agents and exposed to various doses of gamma radiation. Results show that PVC plastisol with 3 phr of TMPTMA have shown good/improved mechanical properties up to 25 Mrad gamma radiation exposure. Thermal stability and artificial weatherability of the developed formulation was also observed to be good. The developed compositions may find applications for making radiation protection apron.