Heats of decomposition, combustion and explosion of nitrocelluloses derived from wood and cotton
1985; Elsevier BV; Volume: 89; Linguagem: Inglês
10.1016/0040-6031(85)85478-2
ISSN1872-762X
AutoresEven Lemieux, Robert E. Prud’homme,
Tópico(s)Thermal and Kinetic Analysis
ResumoAbstract Heats of decomposition, explosion and combustion of nitrocellulose (NC) fibers derived from wood (three samples) and cotton (four samples) were measured using differential scanning calorimetry (DSC) and bomb calorimetry. The nitrogen content of the fibers ranged from 12.6 to 13.5%. A procedure for obtaining accurate and precise average heats of decomposition (standard deviation from the mean of about 2%) is proposed. A limited number of measurements were also performed with DSC, using NC films cast from acetone, tetrahydrofuran and ethyl acetate. Average heats of decomposition, explosion and combustion thus obtained are of the order of 2.0, 4.0 and 9.5 kJ g −1 , respectively. Degradation mechanisms are discussed in relation to the surrounding atmosphere of reaction, and as a function of the nitrogen content of the samples.
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