| Abstract: | A graft copolymer of polyethylene terephthalate with acrylic acid has been prepared by γ-irradiation. Thermal analysis in air and nitrogen has been made on the original polymer, the acidic copolymer and also on the sodium, lead and cupric salts of the copolymer. In addition to thermal degradation, all samples suffer thermo-oxidative degradation in air in the region of the melting point. The weight loss in air and in nitrogen for all the copolymers at this temperature exceeds that of the ungrafted polymer. |
