Thermal decomposition behavior of ammonium perchlorate/nitrated microcrystalline cellulose carbamate/diethylene glycol dinitrate energetic composite

This study reports the successful preparation of an energetic composite consisting of ammonium perchlorate (AP), nitrated microcrystalline cellulose carbamate (M3CN), and diethylene glycol dinitrate (DEGDN). The optimal composition was determined by theoretical performance calculations using the NASA-CEA2 program prior to preparation. Characterization techniques, including Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), confirmed the uniform dispersion of AP within the M3CN/DEGDN matrix without altering its chemical structure. Thermal analysis revealed that the incorporation of AP facilitated the decomposition of both components, as indicated by shifts to lower decomposition peak temperatures. This suggests a catalytic interaction that enhances heat release and combustion energy. Kinetic models using isoconversional methods revealed a significant reduction in activation energy, further supporting the observed catalytic effects in the AP@M3CN/DEGDN composite during different stages of decomposition.