Synthesis and characterization of nitrogen-rich polybenzoxazines for energetic applications

In a vision to develop new synthetic routes for the preparation of energetic materials, two benzoxazine monomers were synthesized via two-step Mannich reaction process involving incorporation nitrogen–nitrogen bonds and explosophore groups (NO 2 ) into monomer backbone. The molecular structures confirmed by 1 H NMR, Fourier transform infrared elemental analysis techniques. curing behavior degradation phenomena evaluated differential scanning calorimetry-thermogravimetric analyses. showed distinct exothermic peaks related polymerization phases. performances determining heat combustion formation using bomb calorimeter, in an oxygen atmosphere. results indicated that 2,4 dinitrophenylhydrazine–based has better properties than phenylsemicarbazide-based benzoxazine, developed polymers comparable with nitrocellulose glycid azide polymer. Overall, this study demonstrated ease synthesis resins can be further extended field research is undergoing fully unravel potential these exceptional materials.