Kinetic mechanism on Thermal Degradation of a Nitrate Ester Propellant

Kimura, Junichi

doi:10.1002/prep.19880130103

Cited by 33 publications

(11 citation statements)

References 11 publications

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“…As can be seen from Figure A, the FTIR spectra of pure NC aged, respectively, for 40, 80, and 120 days showed the appearance of the band at 1750 cm −1 attributed to C═O bending vibration. This result provides a clear evidence of the formation of aldehyde during aging of NC, which corroborates the literature data . It can also be deduced from Figure D the appearance of the band at 2901 cm −1 during aging of NC/ANA, which is attributed to the stretching of the C―H stretching vibration, suggesting eventual chemical interactions between NC and ANA…”

Section: Discussionsupporting

confidence: 90%

Differentiation of stabilized nitrocellulose during artificial aging: Spectroscopy methods coupled with principal component analysis

Trache

Tarchoun

2019

Journal of Chemometrics

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In this work, Fourier transform infrared spectroscopy (FTIR) and X-ray powder diffraction (XRD) were selected as reliable, fast, and nondestructive techniques to assess their potentialities for characterization and discrimination of nitrocellulose (NC)-based formulations containing different kinds of stabilizers and subjected to accelerated aging. Preliminary results based on visual comparison of the spectra point out that spectra obtained by both spectroscopic techniques were useful for a rapid detection of the aging process without additional sample preparation. Additionally, the existence of compatibility issues between NC and one of the stabilizers is easily recognized. The spectral data were subjected to principal component analysis (PCA) for visualization and to reveal differences between samples. The obtained results demonstrated that PCA plots were able to distinguish and classify the NC samples with respect to their respective stabilizers and aging.

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Section: Discussionsupporting

confidence: 90%

Differentiation of stabilized nitrocellulose during artificial aging: Spectroscopy methods coupled with principal component analysis

Trache

Tarchoun

2019

Journal of Chemometrics

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“…With the unveiling of the kinetic compensation effect in Fig. 4, all of the rate data, including those of Kimura (6), are consistent with a slower first-order stage and a faster autocatalytic stage in the temperature range of study. A perfect kinetic compensation relationship means that an isokinetic temperature exists.…”

Section: T=100°c-2000csupporting

confidence: 66%

Thermal Decomposition of Energetic Materials 69. Analysis of the kinetics of nitrocellulose at 50 °C–500 °C

Brill

Gongwer

1997

Propellants Explo Pyrotec

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Kinetic constants for decomposition of nitrocellulose in the 50 °C to 500°C range are analyzed. At T < 100°C, three processes (depolymerization, peroxide formation, and hydrolysis) are consistent with the reported kinetics. For T = 100°C–200°C, 28 of 30 previously reported kinetic measurements can be organized clearly into two categories by the use of the kinetic compensation effect. These two groups fit the first‐order and autocatalytic processes. Conflicting interpretations are reconciled by this approach. At T > 200°C, the kinetics are consistent with the existence of the first‐order step and desorption of the products as two parallel processes which, together, control the rate. Time‐to‐exotherm and mass burning rate kinetics are compared as temperature‐dependent reaction‐desorption events.

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“…In addition, the release of encapsulated material from such microcapsules is usually temperature dependent (Jalil and Nixon, 1990). As reported by Kimura (1988), the decomposition rate of NC and NG increases with temperature, a higher release rate of stabiliser will be required at high temperatures.…”

Section: Introductionmentioning

confidence: 95%

Fabrication and characterisation of 2NDPA-loaded poly(lactide-co-glycolide) (PLG) microspheres for explosive safety

Shorty

Singh

Jebrail

et al. 2012

Journal of Microencapsulation

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We demonstrate the microencapsulation of a double-base (DB) rocket propellant stabiliser, 2-nitrodiphenylamine (2-NDPA), that can potentially increase the shelf life of DB rocket propellants. Poly(lactide-co-glycolide) (PLG) microspheres loaded with 2-NDPA were prepared using the oil-in-water emulsion technique. The microsphere size was found to be inversely related to the mixing rate. It was also found that a higher theoretical loading of 2-NDPA resulted in larger microspheres. In addition, a Rosin Rammler distribution function gave an accurate representation of the microsphere size distribution, and the release rate 2-NDPA from PLG microspheres was found to be size dependent. We show that parameters such as the stirring speed and the percent loading of 2-NDPA can be varied to tailor the release of 2-NDPA from PLG microspheres. In addition, we have shown that temperature has a dramatic effect on the release of 2-NDPA from PLG microcapsules.

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Kinetic mechanism on Thermal Degradation of a Nitrate Ester Propellant

Cited by 33 publications

References 11 publications

Differentiation of stabilized nitrocellulose during artificial aging: Spectroscopy methods coupled with principal component analysis

Differentiation of stabilized nitrocellulose during artificial aging: Spectroscopy methods coupled with principal component analysis

Thermal Decomposition of Energetic Materials 69. Analysis of the kinetics of nitrocellulose at 50 °C–500 °C

Fabrication and characterisation of 2NDPA-loaded poly(lactide-co-glycolide) (PLG) microspheres for explosive safety

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