Abstract
Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) undergoes almost a simultaneous transition from melting to decomposition, which makes direct measurement of the heat of fusion from calorimetric studies very difficult. The heat of fusion of HMX reported in the literature is unusually high when compared to those of energetic materials with similar molecular structures such as 1,3,5-trinitroperhydro-1,3,5-triazine (RDX) and [3-nitrooxy-2,2-bis(nitrooxymethyl)propyl] nitrate. In this work, we investigate melting properties with differential scanning calorimetry (DSC) and theories of solubility thermodynamics. A series of DSC experiments with heating rates 0.25–20 K/min show that melting onset of HMX starts appearing at heating rates between 5.5–6.0 K/min. Since the melting endotherm is convoluted with the decomposition exotherm, we determine the heat of fusion of HMX based on solubility thermodynamics by measuring the melting point depression of HMX in the presence of RDX. The heat of fusion obtained fr...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.