Interaction mechanism studies of 1-tetrazole derivatives and nitrocellulose. Part 1: introduction of amino groups on C and N atoms

• Published in: New journal of chemistry 2024-09, Vol.48 (38), p.16776-16794
• Main Authors: Zhang, Jianwei, Bian, Chengming, Chen, Ling, He, Weidong
• Format: Article
• ISSN: 1144-0546; 1369-9261
• DOI: 10.1039/d4nj01763c

Recently, we investigated the interaction mechanism of 1 H -tetrazole (1 H -TZ) and nitrocellulose (NC). Next, we tried to introduce an amino group at the C and N atoms of 1 H -tetrazole, so as to explore the influence of amino group modification on the pyrolysis process of NC. The focus of this study was on investigating the interaction mechanism of aminotetrazole (5-ATZ or DATZ) and NC through kinetics methods and TG-DSC-FTIR analysis. The quenching and reheating experiments revealed that the imino form of 5-ATZ or DATZ played an important role in this process. The addition of aminotetrazole (5-ATZ and DATZ) mainly affected the autocatalytic reaction at the initial stage of the pyrolysis process of NC. TG-DSC-FTIR experiments revealed that there was a chemical reaction between NO 2 and decomposition products of 5-ATZ or DATZ. In this reaction, R-N&z.dbd;C&z.dbd;NH or N&z.tbd;C-NH-R (R = H and NH 2 ) reacted with NO 2 to form N 2 O and CO 2 . The interaction analysis: the addition of aminotetrazole (5-ATZ and DATZ) mainly affected the autocatalytic reaction at the initial stage of the pyrolysis process of NC. The imino form of 5-ATZ or DATZ played an important role in this process.