Thermal decomposition of energetic materials 11. Condensed phase structural characteristics and high rate thermolysis of di- and trinitroaliphatic carboxylic acids and carbonates
✍ Scribed by Y. Oyumi; T.B. Brill
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 549 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0010-2180
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✦ Synopsis
IR spectra of 3,3,3-trinitrobutyric acid, 1, 3,3-dinitrovaleric acid, 2, bis(2,2,2-trinitroethyl)carbonate, 3, and bis(2,2-dinitropropyl)carbonate, 4, were analyzed from 163K to the decomposition temperature. Below the decomposition temperature most of the structural alterations involve the COOH group. Once decomposition begins, the spectral changes also involve the C-NO2 groups. The backbone of the gem-dinitroalkyl compounds degrades more readily than the gem-trinitro compounds. Concentration-time profiles of the gas products from high-rate thermolysis (>75K s-~) show that NO2 is the predominant initial decomposition product while CO, is initially important only from 2. NO is a major initial product of the gem-dinitro series but not the gem-trinitro series. Through the duration of observation, the concentration of the carbon oxidation products increases while INO2] decreases, suggesting that NO2 is the principal oxidizing agent. The decomposition-to-deflagration transition occurs in the gemtrinitro compounds but not the gem-dinitro compounds under these experimental conditions.