Polymethylhydrosiloxane-Coated Ammonium Dinitramide: A Simple Strategy to Moisture-Resistant and Insensitive Energetic Microspheres.

ABSTRACT: Ammonium dinitramide (ADN) is a promising, environmentally friendly oxidizer for next-generation solid propellants. However, its high hygroscopicity and sensitivity to mechanical stimuli significantly hinder its practical applications. Here, ADN-polymethylhydrosiloxane (ADN-PMHS) composite microspheres were prepared via solvent-antisolvent crystallization, followed by a simple surface coating step. The morphology, chemical structure, thermal behavior, hygroscopicity, and mechanical sensitivity of the coated microspheres were systematically characterized. Results revealed that PMHS formed a uniform, continuous hydrophobic layer on the ADN crystal surfaces, yielding well-dispersed spherical particles. At an optimal PMHS content of 0.5 wt % (ADN-0.5%PMHS), the composite exhibited 54.8% lower

SUBMITTER: Bui AT 

PROVIDER: S-EPMC12824754 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature