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Journal Articles Angewandte Chemie International Edition Year : 2020

Energetic Nitrogen‐Rich Polymers with a Tetrazene‐Based Backbone

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Abstract

New energetic polymers were synthesized from monomers featuring the trans-2-tetrazene unit. In contrast to traditional binders, such as the inert hydroxytelechelic polybutadiene or the glycidyl azide polymers-where the energetic features are on the side chains-, the energetic groups in the polytetrazenes are incorporated directly in the polymer backbone. Thermal analyses evidenced that decomposition occurs at ~130 °C, regardless of the polymer structure. Glass transition temperatures range from-34.2 to 0.2°C, and they could be lowered further (to-61°C) with the help of a new diazido tetrazene energetic plasticizer. Interestingly, hexafluoro isopropanol (HFIP) enables a complete, room temperature depolymerization within one week. This should enable the recycling of the unused pyrotechnic compositions based on these new binders.
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Dates and versions

hal-02975284 , version 1 (22-10-2020)

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John Eymann, Lionel Joucla, Guy Jacob, Chaza Darwich, Jean Raynaud, et al.. Energetic Nitrogen‐Rich Polymers with a Tetrazene‐Based Backbone. Angewandte Chemie International Edition, In press, ⟨10.1002/anie.202008562⟩. ⟨hal-02975284⟩
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