Microcalorimetry and DSC study of the compatibility of energetic materials

Tompa, Albert S.; Bryant, William F.

doi:10.1016/s0040-6031(00)00674-2

Cited by 18 publications

(8 citation statements)

References 2 publications

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“…It can also lead to variations in thermal safety. Analytical techniques such as differential scanning calorimetry (DSC), pressure differential scanning calorimetry (PDSC), 20,21 thermogravimetry/ differential thermal analysis (TG/DTA), isothermal storage tests (IST), pressure isothermal storage tests (PIST), manometric vacuum stability tests (MVST), pressure vacuum stability tests (PVST), 22 and isothermal microcalorimetry (IMC) 23 have been used for compatibility studies. The DSC thermal analysis method 24 is widely applied to evaluate the Fig.…”

Section: The Compatibility Analysismentioning

confidence: 99%

Compatibility and thermal decomposition mechanism of nitrocellulose/Cr₂O₃ nanoparticles studied using DSC and TG-FTIR

et al. 2019

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Section: The Compatibility Analysismentioning

confidence: 99%

Compatibility and thermal decomposition mechanism of nitrocellulose/Cr₂O₃ nanoparticles studied using DSC and TG-FTIR

et al. 2019

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“…method of investigating changes in the physicochemical properties of pharmaceutical preparations under ambient conditions. The physical stability of some excipients and drugs has been studied by IMC (eg, moisture content [4,5], mutarotation of lactose [6], surface energy [7], crystallization [8,9], and others [10][11][12][13][14][15][16][17]).…”

Section: Introductionmentioning

confidence: 99%

Physicochemical stability of cimetidine amorphous forms estimated by isothermal microcalorimetry

2002

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The effect of humidity on the physicochemical properties of amorphous forms of cimetidine was investigated using differential scanning calorimetry, isothermal microcalorimetry, and x-ray diffraction analysis. Amorphous forms were obtained by the melting (amorphous form M [AM]) and the cotton candy (amorphous form C [AC]) methods. Thermal behaviors of AM and AC with or without seed crystals were measured using an isothermal microcalorimeter under various conditions of relative humidity (RH) and temperature, respectively. The crystallization kinetics of amorphous solids was analyzed based on 10 kinds of solid-state reaction models. AM transformed into form A at 11% RH, 50 degrees C but transformed into a mixture of form A and monohydrate at 51% and 75% RH at 25 degrees C. The mean crystallization times (MCTs) of the heat flow curve of AM and AC at 11% RH, 50 degrees C were 47.82 and 32.00 hours, respectively, but at 11% RH, 25 degrees C both were more than 4320 hours. In contrast, AC transformed into form A under all storage conditions. The MCTs of AC at 51% and 75% RH were 29.61 and 11.81 hours, respectively; whereas the MCTs of AM were 46.79 and 15.52 hours, respectively. The crystallization of amorphous solids followed the three-dimensional growth of nuclei (Avrami equation) with an induction period (IP). The IP for AM at 11% RH, 50 degrees C was more than 2 times that for AC, but the difference in the crystal growth rate constant (CR) between AC and AM was within 10%. The IP for AM at 75% RH, 25 degrees C was reduced to only 10% of the IP at 51% RH with increasing humidity, but the CR did not change significantly. In contrast, the IP for AC was slightly reduced at 75% RH compared with 51% RH, but the CR was about 5 times greater. At 75% RH, 25 degrees C, the IP and CR of AM were about one-fourth the values of AC. This result suggests that the crystallization process consists of an initial stage during which the nuclei are formed and a final stage of growth.

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“…Similar to the high performance explosive property of polyazaisowurtzitane, HNIW and HMX have six N-NO 2 groups [11][12][13][14][15] and four N-NO 2 groups [16][17][18][19][20][21][22][23], respectively. Therefore, while the thermal decomposition occurs, products can accumulate in a reacting sample, which promotes acceleration of the reaction.…”

Section: Determination Of Hniw and Hmx's Thermokineticmentioning

confidence: 99%

“…Newton's law of heat exchange (17) Here the indices "wall" and "e" relate to the parameters on the boundary and in environment, respectively; q is the heat flow; n is the unit outer normal on the boundary [6-10].…”

Section: Determination Of Thermal Explosion Parameters By Simulationmentioning

confidence: 99%

Modeling solid thermal explosion containment on reactor HNIW and HMX

Lin

Chang

Chou³

et al. 2010

Journal of Hazardous Materials

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Microcalorimetry and DSC study of the compatibility of energetic materials

Cited by 18 publications

References 2 publications

Compatibility and thermal decomposition mechanism of nitrocellulose/Cr₂O₃ nanoparticles studied using DSC and TG-FTIR

Compatibility and thermal decomposition mechanism of nitrocellulose/Cr₂O₃ nanoparticles studied using DSC and TG-FTIR

Physicochemical stability of cimetidine amorphous forms estimated by isothermal microcalorimetry

Modeling solid thermal explosion containment on reactor HNIW and HMX

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Microcalorimetry and DSC study of the compatibility of energetic materials

Cited by 18 publications

References 2 publications

Compatibility and thermal decomposition mechanism of nitrocellulose/Cr2O3 nanoparticles studied using DSC and TG-FTIR

Compatibility and thermal decomposition mechanism of nitrocellulose/Cr2O3 nanoparticles studied using DSC and TG-FTIR

Physicochemical stability of cimetidine amorphous forms estimated by isothermal microcalorimetry

Modeling solid thermal explosion containment on reactor HNIW and HMX

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Compatibility and thermal decomposition mechanism of nitrocellulose/Cr₂O₃ nanoparticles studied using DSC and TG-FTIR

Compatibility and thermal decomposition mechanism of nitrocellulose/Cr₂O₃ nanoparticles studied using DSC and TG-FTIR