The copolymer DHPPAF has been synthesized by condensation of 2,4-dihydroxypropiophenone,4- pyridyl amine with formaldehyde in the presence of 2M HCl as a catalyst at125 ± 20C in 1:1:2 molar proportion of reactants. The structure of newly synthesized copolymer has been elucidated and confirmed on the basis of elemental analysis and various spectral techniques, that is, UVVisible, FT-IR, and 1H-NMR spectroscopy. The thermal degradation kinetics of the copolymer has been investigated by thermo gravimetric analysis (TGA) in a static nitrogen atmosphere at a heating rate of 100 C/min. Sharp-Wentworth and Freeman-Carroll methods have been used to evaluate the kinetic and thermodynamic parameters such as thermal activation energy (Ea), entropy change (∆S), free energy change (∆F), apparent entropy change (S*), frequency factor (Z) and order of reaction(n). The activation energy calculated by Sharp-Wentworth and Freeman-Carroll methods are in close agreement with each other. The order of decomposition reaction is found to be 0.96.
