GC/MS/EI and HPLC/PDA studies on monitoring of a solid rocket fuel formulation based on ammonium perchlorate at controlled high temperature

摘要

Studies regarding the determination of two antioxidants, 2,6-di-tert-butyl-p-Cresol and phenol, 2,2'-methylenebis[6-(1,1-dimethylethyl)-4-methyl, in a solid rocket fuel formulation based on ammonium perchlorate, aluminum and an inert binder, by high-performance liquid chromatography - photodiode array detection (HPLC/PDA) and gas chromatography - mass spectrometry in electron impact ionization mode (GC/MS/EI) have been carried out. Have been developed methods for GC/MS qualitative detection of antioxidants and HPLC/PDA quantitative measurements. Sample preparation and analysis procedures have been optimized during this study. HPLC and GC/MS determinations were performed after sonication-assisted extraction with methanol. These techniques were used for monitoring the variation of the concentration of the antioxidants from the solid rocket fuel, with time and temperature, during an accelerating ageing programme [1]. GC-MS; HPLC; solid fuel; BHT; ageing