Heat and radiation effect on the degradation behaviors of polymeric liquids

We propose a mathematical model based on continuous-mixture kinetics to describe the degradation mechanism of polymeric material. Chu’s distribution function is employed to represent molecular-weight distributions of decomposed polymers. Calculated results agree fairly well with experimental observations for polymer degradation. The radiation damage is demonstrated as a number of chain scissions caused and G value for the scission that is defined as a number of radiolysis events caused by the absorption of 100 eV of radiation.