PAH Induction upon Pyrolysis of Hydroxyl-Terminated Polybutadiene-Based Solid Rocket Fuels.

ABSTRACT: Using a molecular beam (MB)-based approach with time-of-flight mass spectra (TOFMS) product detection, we have effected pyrolysis of hydroxyl-terminated polybutadiene/ammonium perchlorate (HTPB/AP) mixtures under conditions relevant to solid fuel rocket motor operation - pyrolysis temperatures >1000 °C with chemistry occurring on μs time scales. In earlier studies, it was implicitly assumed that AP did not significantly affect HTPB pyrolysis chemistry, that it was a featureless oxidant that also raised pyrolysis temperatures. This appears not to be the case. For HTPB pyrolysis in the presence of AP, a series of polycyclic aromatic hydrocarbon (PAH) products were detected up to m/z 240-260. No such PAHs were detected for pyrolysis of HTPB alone, with traces of them occurring w

SUBMITTER: Karpovych V 

PROVIDER: S-EPMC12278256 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature