Pyrolysis mechanism and evolved gas analysis of a promising energetic carbamate-functionalized microcrystalline cellulose nitrate
Hani Boukeciat,
Ahmed Fouzi Tarchoun,
Djalal Trache,
Amir Abdelaziz,
Djamal Belmehdi,
Redha Meziani,
Lokmene Boumaza,
Thomas M. Klapötke
Affiliations
Hani Boukeciat
Energetic Materials Laboratory (EMLab), Teaching and Research unit of Energetic Processes, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, 16046, Algiers, Algeria
Ahmed Fouzi Tarchoun
Energetic Materials Laboratory (EMLab), Teaching and Research unit of Energetic Processes, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, 16046, Algiers, Algeria; Corresponding authors.
Djalal Trache
Energetic Materials Laboratory (EMLab), Teaching and Research unit of Energetic Processes, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, 16046, Algiers, Algeria; Corresponding authors.
Amir Abdelaziz
Energetic Materials Laboratory (EMLab), Teaching and Research unit of Energetic Processes, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, 16046, Algiers, Algeria
Djamal Belmehdi
Department of Chemistry, Laboratory for Energetic Material, Royal Military Academy of Belgium. Brussels 1000, Belgium
Redha Meziani
Energetic Materials Laboratory (EMLab), Teaching and Research unit of Energetic Processes, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, 16046, Algiers, Algeria
Lokmene Boumaza
Energetic Materials Laboratory (EMLab), Teaching and Research unit of Energetic Processes, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, 16046, Algiers, Algeria
Thomas M. Klapötke
Department of Chemistry, Ludwig Maximilian University, Butenandtstrasse 5–13 (D), D-81377 Munich, Germany
The present study aims to elucidate the decomposition mechanism and gas evolution characteristics of a promising energy-rich carbamated microcrystalline cellulose nitrate (M3CN). The molecular structure and morphological characteristics of starting microcrystalline cellulose carbamate (MCCC) and its nitrated derivative were examined using FTIR and SEM techniques. Thermal analysis using TGA and DSC revealed distinct decomposition behaviors for MCCC and M3CN. MCCC exhibited endothermic decomposition linked to the degradation of the cellulosic structure. In contrast, an exothermic decomposition event was observed for M3CN, attributed to the cleavage of energetic groups within the nitrated cellulosic chains. Furthermore, the hyphenated TG-FTIR analysis confirmed that the primary gaseous products emitted during the pyrolysis of M3CN included NO, N2O, NO2, CO2, H2O, CH4, HCHO, HCN, and CHNO. The findings of this study enhance our understanding of the pyrolysis mechanism in cellulose-based energetic materials, providing a significant reference for forthcoming research and explorations in this field.
