Dynamic mechanical analysis is combined with mass spectrometry to study nitrocellulose andnitrocellulose-diphenylamine films under oscillating strain. At a constant temperature (150 – 160°C) andfrequency 400 – 600 Hz nitrocellulose fractures demonstrating a modulus drop and release of productswith m/z=30 and 44. At linear heating (2°C min-1) and frequency 10 – 50 Hz similar products arereleased in two steps, the second of which demonstrates a modulus drop and a temperature increaseindicating ignition. Addition of 2% of diphenylamine markedly enhances the resistance of nitrocelluloseto mechanochemical degradation. At 160°C the process has been initiated only after significant exposuretimes to high frequencies: 67 min at 200 Hz, 36 min at 300 Hz, and 29 min at 400 Hz.
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