Solid propellant decomposition studies by differential scanning calorimetry

Abstract

Decomposition of solid propellants, relevant in combustion processes, has been studied by differential scanning calorimetry (DSC). Enthalpy changes for decomposition of the polymers [polystyrene (PS) and styrene-oxygen copolymer (co-polymer)], ammonium perchlorate (AP) and the corresponding propellants have been estimated from DSC thermograms. Energy of activation of the net decomposition process is estimated to be 41±5 and 35±6 kcal mol⁻¹ for PS and copolymer propellants, respectively. Isothermal decomposition studies of the propellants have also been made.