Inorganic environment derived from the sol-gel route does not improve the thermal or oxidative stability of 2,4-dinitroaniline in coatings

Abstract

Abstract The relative thermal and oxidative stabilities of N-[3-(triethoxysilyl)propyl]2,4-dinitroaniline (1), incorporated covalently into sol-gel coatings and of 2,4-dinitroaniline, incorporated non-covalently into similar coatings, showed no significant difference in relative thermal stability in sol-gel derived films under a variety of conditions: with no overcoat of SiO2; with a dense sol-gel-derived overcoat of SiO2; with a porous overcoat of SiO2; over a porous, high surface area coating of SiO2; and copolymerized with or physically incorporated into dense and porous SiO2 films derived from tetraethylorthosilicate.