We synthesized poly(epichlorohydrin-co-2-(methoxy)methyl oxirane) [poly(ECH-co-MOMO)] and ferrocene modified poly(epichlorohydrin-co-2-(methoxy)methyl oxirane) [poly(FECH-co-MOMO)] based polyurethane networks. The polyurethane networks were prepared from prepolymer diol, 1,6-hexamethylenediisocyanate (HDI), and HDI-trimer with an [NCO]/[OH] ratio of 1.05 and an [isocyanate trimer]/[total NCO] ratio of 0.3 followed by accelerated aging at 80 degrees C for 72 h. Thermal decomposition kinetics of urethane networks were investigated by thermal gravimetric analysis (TGA). Both the isoconversional and Vyazovkin methods were used to investigate the thermal decomposition behavior for evaluating kinetic parameter of poly(ECH-co-MOMO) and poly(FECH-co-MOMO) based polyurethane networks. The decomposition temperature of the poly(ECH-co-MOMO) based polyurethane network was lower than that of the poly(FECH-co-MOMO) based polyurethane network. From the Vyazovkin method, the maximum activation energies of poly(ECH-co-MOMO) and poly(FECH-co-MOMO) based polyurethane networks were 220 kJ/mol and 240 kJ/mol, respectively. (C) 2013 Elsevier B.V. All rights reserved.