Kinetics and mechanism of the thermal decomposition reaction of 3,3‐Bis(azidomethyl)oxetane/tetrahydrofuran copolymer

The thermal behavior, mechanism and kinetic parameters of the exothermic decomposition reaction of 3,3‐bis(azidomethyl)oxetane/tetrahydrofuran (BAMO/THF) copolymer in a temperature‐programmed mode have been investigated by means of DSC, TG‐DTG, fast and lower thermolysis/FTIR and TG‐MS. The reaction mechanism was proposed. The apparent activation energy and pre‐exponential constant of exothermic decomposition reaction of the compound at 0.1 MPa are 167.04 kJ*mol −1 and 10 14.41 s −1 , respectively. The corresponding critical temperatures of thermal explosion obtained from the onset temperature T c , and the peak temperature T p are 223.20 and 245.78°C, respectively. The kinetic equation of the exothermic decomposition process of BAMO/THF at 0.1 MPa could be expressed as: \documentclass{article}\pagestyle{empty}\begin{document}$ \frac{{{\rm d}\alpha }}{{{\rm d}T}} = 10^{15.19} \left[{ - \ln (1 - \alpha)} \right]^{\frac{2}{3}} e^{ - 2.009 \times 10^4 /T} $\end{document} .