Effect of γ—Irradiation on the Thermal Properties of Nuclear Grade polystyrene Cation Exchange Reshin-Indion-223

Abstract

For determination of optimum drying temperature of resin and to investigate its thermal characteristics, simultaneous TGA. DTA curves of resin sample have been recorded. For this unirradiated and irradiated resin samples in Fe³⁺, Cr³⁺ and Li⁺ ionic forms were used. It is seen that irradiation does not affect the overall decomposition for Cr³⁺ and Fe³⁺ forms of resin irradiated up to 5 MGY γ-dose. It is recorded that the ion exchangers in Cr³⁺ and Fe³⁺ formed subsequent to dehydration process, depolymerise exothermally over the temperature range 350–550ºC.