Homopolymerization of allyl glycidyl ether (AGE) initiated by gamma rays and the copolymerization of AGE with acrylonitrile (AN) and methyl methacrylate (MMA) were investigated. The thermal characterization of resulting homopolymers and copolymers were realized by Thermal Analysis Techniques and their degradation activation energies were calculated. The copolymers, P(AGE/AN), formed from AGE+AN monomers were more stable thermally than those copolymers, P(AGE/MMA), formed from AGE+MMA monomer mixtures.