biostudies-literatureUnknown11(2)Bui ATAmmonium 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 ACS omega3398-3411https://www.ebi.ac.uk/biostudies/studies/S-EPMC12824754biostudies-literaturePolymethylhydrosiloxane-Coated Ammonium Dinitramide: A Simple Strategy to Moisture-Resistant and Insensitive Energetic Microspheres.PMC12824754Pham QHCao HTPham VTVu MTBui ATfalsePolymethylhydrosiloxane-Coated Ammonium Dinitramide: A Simple Strategy to Moisture-Resistant and Insensitive Energetic Microspheres.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 2026-01-01T00:00:00Z2026 Jan2026-06-06T22:26:50.117Z2026-06-06T03:08:05.289ZS-EPMC128247544158572410.1021/acsomega.5c10688