Application of supercritical fluid extraction to isolation of additives from smokeless gunpowders

Abstract

This paper deals with the application of supercritical extraction to isolation of additives from samples of smokeless powders, as an to classical fluid extractions (using Soxhlet apparatus or ultrasonication). The reasons for introduction of new extraction techniques are the decrease in volume of the solvents used for extraction and shortening the time of extraction, which usually takes several hours or even days. In the supercritical fluid extraction it is necessary to optimize the basic extraction parameters (temperature, pressure, modifier, treatment of the sample by means of grinding and the lenght of static step).