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Laser-induced Selective Dissociation of Nitro Groups in Nitrocellulose

✍ Scribed by Mo Yang; J. Michael Ramsey; Byung J. Kim

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
517 KB
Volume
10
Category
Article
ISSN
0951-4198

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✦ Synopsis

Laser-induced denitration of nitrocellulose has been investigated using an ion trap mass spectrometer. Selective dissociation of nitro groups into predominantly nitric oxide was observed when nitrocellulose was exposed to pulsed UV laser radiation. The wavelength dependence of denitration shows the simple trend that shorter wavelength W laser light induces more dissociation of nitro groups. The weight-loss rate of the sample (nitrogen content 13.6%), due to denitration induced by 266nm laser light, was measured to be 4~0.4pglJ. This represents a 5.8% photon-to-nitro group conversion efficiency. A laser intensity threshold is observed, above which thermal decomposition occurs.

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