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. 2023 Sep 19;9(9):e20306.
doi: 10.1016/j.heliyon.2023.e20306. eCollection 2023 Sep.

Nitroglycerin trapping in melamine matrices

Cédric Schwartz  1 , Marc Comet  1 , Bastien Lallemand  1 , Maxence Vince  1 , Anna K Ott  1 , Fabien Schnell  1 , Benjamin Bonnet  1 , Denis Spitzer  1
Affiliations

Nitroglycerin trapping in melamine matrices

Cédric Schwartz et al. Heliyon. .

Abstract

Melamine (Mel) was used as host matrix for liquid nitroglycerin (NG), to prepare Mel/NG solid powdered compounds containing up to 45 wt% of this explosive. The two preparation processes used for this purpose consisted in evaporating a solution of both components, either in ambient conditions or under reduced pressure by the Spray Flash-Evaporation (SFE) process. In Mel/NG materials, amorphous nitroglycerin is distributed in the crystallized melamine matrix as inclusions, which were found to be smaller in size in the material prepared by the SFE process. Mel/NG materials are not stable over time: they gradually lose the nitroglycerin they contain by evaporation.

Keywords: Composite; Explosive; Inclusion; Matrix; Melamine; Nitroglycerin.

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Conflict of interest statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Figures

Fig. 1
Fig. 1
(a) FT-IR spectra of the materials and their components, (b) 3D Raman spectra of the Mel/NG-SE compound in which melamine is represented in red and nitroglycerin in green.
Fig. 2
Fig. 2
X-Ray diffraction patterns of (a) melamine and (b) the Mel/NG-SE compound.
Fig. 3
Fig. 3
SEM images of (a) melamine and the composite materials: (b–c) Mel/NG-SE at low and higher magnification, (d) Mel/NG-SFE.
Fig. 4
Fig. 4
(a) TGA curves of the materials studied and (b) their temperature derived signals, (c) desorption times of nitroglycerin from the melamine matrix: experimental values are represented by squares (Mel/NG-SFE) and triangles (Mel/NG-SE), while the lines are trend curves obtained by extrapolating these values.
See this image and copyright information in PMC

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