Elsevier

Thermochimica Acta

Volume 254, 15 April 1995, Pages 331-336
Thermochimica Acta

Regular paper
Thermal studies on unirradiated and γ-irradiated polymer of allyl diglycol carbonate

https://doi.org/10.1016/0040-6031(94)01989-TGet rights and content

Abstract

The thermal decomposition of unirradiated and γ-irradiated (5.93–15.5 MRad dose range) allyl diglycol carbonate polymer (trade name, CR-39) was studied by thermogravimetry (TG) and differential thermal analysis (DTA). These studies indicate four main decomposition steps in CR-39 polymer in air. Assessment of the influence of radiation dose on the above range shows that while the 5.93 MRad γ-irradiated polymer CR-39 degrades in three steps, the 15.5 MRad γ-irradiated polymer degrades in only two steps. The kinetics of the different stages of degradation were also evaluated from the TG curves. Irradiation enhances the decomposition rate and the effect increases further with increasing radiation dose. The activation energy values calculated for all the decomposition stages decrease on irradiation.

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