Robert MATYÁŠ

Central European Journal of Energetic Materials Volume 8, Number 3, 2011



 Synthesis and Characterization of Polyethylene Glycol Dinitrates


Robert MATYÁŠ, Jakub ŠELEŠOVSKÝ, Zdeněk JALOVÝ and Jana ROHÁČOVÁ

Institute of Energetic Materials, Faculty of Chemical Technology, University of Pardubice, Studentska 95, CZ-532 10 Pardubice, Czech Republic  

Abstract: Polyethylene glycol dinitrates (PEGN) with molecular weights                                                        between 400 and 20 000 g·mol -1 were prepared from polyethylene glycols by esterification with nitric acid/sulfuric acid in dichloromethane. The products were characterized by gel permeation chromatography. The yield of PEGN increases with increasing reaction temperature (0-40 °C) however large liberation of nitrogen oxides was observed at 40 °C. No influence of reaction temperature (0-40 °C) on the cleavage of the polyethylene glycol chain during esterification was observed. The dependence of melting point on the molecular weight of PEGN was determined. Polyethylene glycol dinitrates with molecular weights Mn above 454 are not sensitive to impact. Heat of combustion of PEGN increases with increasing molecular weight. All samples tested decompose in a similar way during thermal exposition.

Keywords: Polyethylene glycol dinitrate, synthesis, properties, decomposition, kinetic of decomposition




Institute of Industrial Organic Chemistry

Warsaw, Poland