Orientador(es)
Resumo(s)
Four binary mixtures with potential for stabilizing energetic materials have been investigated. The phase
diagrams of N-(2-methoxyethyl)-p-nitroaniline þ diphenylamine, N-(2-methoxyethyl)-p-nitroaniline þ N-
(2-acetoxyethyl)-p-nitroaniline, N-(2-methoxyethyl)-p-nitroaniline þ 2-nitrodiphenylamine, and N-(2-
methoxyethyl)-p-nitroaniline þ 1,3-diethyl-1,3-diphenylurea have been determined by differential scanning
calorimetry. All systems display a simple eutectic behavior. Consistency tests have been applied to
inspect the quality of the SLE data, showing very satisfactory quality factors. The SLE data have also been
correlated by Wilson and NRTL models. The employed equations calculated the equilibrium temperatures
with a root mean square deviations varying from 1.37 to 2.29 K. These models have been applied to compute
the excess thermodynamic functions as well, giving highly comparable values for a further qualitative and
quantitative analysis. The results showa positive deviation fromideality for all the investigated systems due
to the dominant effect of the self-association molecules. The XRD studies revealed the existence of weak
interactions between the components in the formed eutectics and suggested that they are mechanical
systems.
Descrição
Palavras-chave
Eutectic Excess thermodynamic properties Modeling Propellant stability Solid-liquid equilibrium XRD
Contexto Educativo
Citação
Chelouche, S.; Trache, Djalal; Pinho, Simão P.; Khimeche, K. (2019). Experimental and modeling studies of binary organic eutectic systems to be used as stabilizers for nitrate esters-based energetic materials. Fluid Phase Equilibria. ISSN 0378-3812. 498, p. 104-115