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DOE OSTI · 2458174

Key Degradation Products in Nitroplasticizer Thermal Aging

Chen, Kitmin·Edgar, Alexander Steven·Kress, Joel David·Yang, Dali
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Abstract

Upon thermal aging, nitroplasticizer (NP) can thermally degrade and release numerous degradation products depending on aging conditions. In this report, we summarize our recent findings, a library of key degradation products in the NP thermal aging is provided. The library contains 25 identified species with their corresponding MS/MS spectrum and intensity profiles, which are derived from our 44-month thermal aging experiment of NP conducted in air, nitrogen, and water at room temperature (RT), 38, 45, 55, and 64°C. To provide a comprehensive yet simplified overview of NP degradation, we summarized the proposed mechanisms of HONO elimination and decomposition, acid generation, PBNA nitrosation and nitration, acid-catalyzed hydrolyses of NP and polynitrated PBNAs, as well as the formation of NP degradants. As the last part of a series of publications and reports on the investigation of NP degradation mechanisms, this work further unfolds complex chemistry that occurs in the entire aging process of NP.

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36 MATERIALS SCIENCEnitroplasticizerthermal aging

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Chen, Kitmin, Edgar, Alexander Steven, Kress, Joel David, Yang, Dali. 2024-10-01. Key Degradation Products in Nitroplasticizer Thermal Aging. https://doi.org/10.2172/2458174

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