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4716904 
Journal Article 
Glycidyl Azide-butadiene Block Copolymers: 2 Synthesis from a Mesylated Precursor 
Cappello, M; Filippi, S; Mori, L; Polacco, G 
2017 
1 
Propellants, Explosives, Pyrotechnics
ISSN: 0721-3115 
42 
8 
974-981 
WOS:000407229600017 
Glycidyl azide-butadiene block copolymers are potential binders for solid propellants. The azidic part contributes to the overall energy outputs, while the butadiene block improves the mechanical properties. Synthetic strategies proposed in literature are not appropriate for production of large-scale quantities. The mesylation of one homopolymer, followed by reaction with the OH terminal groups of the second is proposed here. The reaction is simple and does not show the drawbacks of the previously suggested alternatives. The block copolymers can be used as "partially" energetic binders. Moreover, they work well as compatibilizer in mechanical blends of the two homopolymers, that otherwise rapidly segregate in two distinct phases. 
Glycidyl azide polymer; hydroxyl-terminated polybutadiene; energetic binders; block copolymers; solid propellants; mesyl groups