Organic eutectic mixture as efficient stabilizer for nitrocellulose: Kinetic modeling and stability assessment

Chelouche, Salim; Trache, Djalal; Tarchoun, Ahmed Fouzi; Abdelaziz, Amir; Khimeche, Kamel; Mezroua, Abderrahmane

doi:10.1016/j.tca.2019.01.015

Cited by 94 publications

(61 citation statements)

References 51 publications

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“…After nitration, the experimental diffractograms of conventional NC1 and NC2 as well as MCCN1 and MCCN2 (Figure d) showed the disappearance of the diffraction peaks attributed to 1

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0, 110, and 004, together with the appearance of new peaks at around 2θ = 12.5 ° and 20 °. The peak at 12.5° was regarded by several authors as a superposing double peak assigned to one part of the crystalline domain of NC, while the halo appearing between 18° and 25° is assigned to the less ordered region of the cellulosic chains as reported by Herrmann et al Furthermore, it is worthy to note that the obtained XRD results are in agreement with those reported in the literature …”

Section: Resultssupporting

confidence: 87%

“…According to these results, it can be concluded that the NC2 and MCCN1 synthesized from cellulose and microcrystalline cellulose isolated from marine POBA, respectively, were of high purity, comparable to NC1 prepared from cotton cellulose and MCCN2 produced from C‐MCC. Besides that, it is worthy to note that the FTIR spectra of the produced cellulose nitrate and MCCN are comparable with those reported in the literature …”

Section: Resultssupporting

confidence: 85%

“…The kinetic investigation of thermally stimulated reactions in nitrocellulose samples could be carried out by the determination of the kinetic triplet, including Arrhenius parameters (activation energy [ E a ] and frequency factor [ A ]) and the most probable reaction model. Such analysis can be performed in two main approaches: model free (isoconversional methods) and model fitting (non‐isoconversional methods) approaches . Moreover, isoconversional method can be broadly classified in two categories: differential (e.g., Friedman) and integral (e.g., modified Coats–Redfern) methods …”

Section: Apparatus and Methodsmentioning

confidence: 99%

“…Herein, the kinetic analyses have been carried out through four isoconversional integral methods, namely TAS, it‐KAS, it‐OFW, and Sbirrazzuoli methodology (VYA/CE) . The choice of these isoconversional integral approaches is due to their high accuracy and due to the fact that isoconversional methods allows estimating the Arrhenius parameters ( E a and A ) without assuming a particular form of the reaction model, and contrary to isoconversional differential method, they are not sensitive to experimental noise which can cause the instability of the numerical values …”

Section: Apparatus and Methodsmentioning

confidence: 99%

“…Besides that, kinetics behavior studies of energetic materials such as NC and MCCN could be an excellent complementary approach, which can provide reliable information about their decomposition and to estimate the influence of their exothermic degradation on the potential hazard in their preparation, storage, and use . Kinetic parameters (activation energy, pre‐exponential factor, and mathematical reaction mechanism) from non‐isothermal data can be computed by isoconversional and non‐isoconversional procedures . However, it was reported by several authors that utilizing isoconversional methods conducts to more effective kinetic parameters compared to non‐isoconversional approaches as recommended by the international confederation for thermal analysis and calorimetry (ICTAC) …”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A Promising Energetic Polymer from Posidonia oceanica Brown Algae: Synthesis, Characterization, and Kinetic Modeling

Tarchoun

Trache

Klapötke

et al. 2019

Macro Chemistry & Physics

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In this study, microcrystalline cellulose nitrate (MCCN) as energetic polymer is successfully obtained from Posidonia oceanica brown algae (POBA). Fourier transform infrared spectroscopy (FTIR) results show alterations in the intensities of some absorption bands, suggesting a significant difference in the chemical structure between microcrystalline cellulose and the emergent MCCN samples. X‐ray diffraction (XRD) measurements indicate that MCCNs are more crystalline than conventional nitrocellulose (NC). According to scanning electron microscopy (SEM), both NC and MCCN reveal a compact structure and a rough surface. Differential scanning calorimetry (DSC) displays that the thermal degradation of MCCNs shifts to lower temperatures compared to the respective NCs. Furthermore, in comparison with NC samples, MCCN samples exhibit high density, high nitrogen content, low viscosity‐average molecular weight, and good thermal stability. On the other hand, kinetic modeling based on DSC data is carried out by isoconversional integral methods to determine Arrhenius parameters and the decomposition mechanisms. It is found that MCCNs present lower activation energies than conventional NCs with a decrease of ≈6%. Finally, this work opens a new pathway to prepare MCCN from POBA, and it is expected to have applications in several areas such as propellants, energetic binders, and gas generators.

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“…After nitration, the experimental diffractograms of conventional NC1 and NC2 as well as MCCN1 and MCCN2 (Figure d) showed the disappearance of the diffraction peaks attributed to 1

\overset{1}{true}

Section: Resultssupporting

confidence: 87%

Section: Resultssupporting

confidence: 85%

Section: Apparatus and Methodsmentioning

confidence: 99%

Section: Apparatus and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Promising Energetic Polymer from Posidonia oceanica Brown Algae: Synthesis, Characterization, and Kinetic Modeling

Tarchoun

Trache

Klapötke

et al. 2019

Macro Chemistry & Physics

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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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The Effects of Aniline Stabilizers on Nitrocellulose Based on Isothermal Thermal Decomposition

Luo

Jin

Chai

et al. 2020

Propellants Explo Pyrotec

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The effects of various aniline stabilizers on the thermal stability of nitrocellulose (NC) were investigated via isothermal thermal decomposition dynamics. The pressuretime curves of NC/stabilizer composites were found to have a distinct inflection point, which was not observed on the pressure-time curves of NC. The effects of stabilizers on the isothermal thermal decomposition kinetics of NC were evaluated using Arrhenius equation and model-fitting method, and the effect of stabilizers on the storage time of NC was estimated using Berthelot equation. Results showed that the activation energy of NC/MNA, NC/ENA, NC/i-PNA, and NC/n-BNA before the inflection point were 162.9, 153.3, 147.4, and 150.6 kJ mol À 1 , respectively, which were significantly increased compared with that of pure NC (144.7 kJ mol À 1 ). Furthermore, the time required for the decomposition extent of NC/MNA, NC/ENA, NC/i-PNA, and NC/n-BNA to reach 0.1 % were 24.9, 11.2, 16.7, and 11.2 years, respectively, at 298.15 K, which was longer than that required of NC (10.6 years). UV-vis revealed that the stabilizers were almost consumed when the NC/stabilizer thermal decomposition pressure-time curve reached the inflection point. Based on the above results, the stability order was MNA > i-PNA > ENA > n-BNA as the criterion for time of the inflection point.

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Organic eutectic mixture as efficient stabilizer for nitrocellulose: Kinetic modeling and stability assessment

Cited by 94 publications

References 51 publications

A Promising Energetic Polymer from Posidonia oceanica Brown Algae: Synthesis, Characterization, and Kinetic Modeling

A Promising Energetic Polymer from Posidonia oceanica Brown Algae: Synthesis, Characterization, and Kinetic Modeling

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

The Effects of Aniline Stabilizers on Nitrocellulose Based on Isothermal Thermal Decomposition

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