Nitrate ester decomposition and degradation of molecular weight in nitrocellulose from thermal decomposition of PBX-9404 below 100/sup 0/C
Technical Report
·
OSTI ID:6099345
The thermal decomposition of nitrate ester (-ONO/sub 2/) in the nitrocellulose (NC) binder of PBX-9404 was studied. Evidence was found that the tri-esterified NC subunits decompose most readily; by calculating the relative populations of mono-, di-, and tri-esterfied subunits and monitoring NC composition as a function of (-ONO/sub 2/) loss, the extent of degradation of the NC molecular weight was estimated. Decomposition of (-ONO/sub 2/) obeyed second-order kinetics, and the activation energy for decomposition (26.1 kcal/mol) agreed with values calculated on the basis of weight loss or the amount of evolved gas.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6099345
- Report Number(s):
- UCRL-52776
- Country of Publication:
- United States
- Language:
- English
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