Hafner, SvenSvenHafnerKeicher, ThomasThomasKeicherKlapötke, Thomas M.Thomas M.Klapötke2022-03-052022-03-052018https://publica.fraunhofer.de/handle/publica/25643310.1002/prep.2017001982-s2.0-85038249225Copolymers of epichlorohydrin (ECH) and 1,2-epoxyhexane (EpH) have been synthesized via cationic ring-opening polymerization using BF3×THF as a catalyst. Structures of the resulting polymers have been confirmed by IR and NMR spectroscopy and GPC. In a subsequent reaction with NaN3 in DMSO, the halogenated precursors were completely azidated, which was confirmed by the same spectroscopic methods. The introduced pendant n-butyl chains act as an internal plasticizer by lowering the glass transition temperature (Tg) of the copolymers compared to the reference compound glycidyl azide polymer (GAP). Compared to GAP in a similar molecular weight range, the copolymers also showed reduced viscosity. These properties make the described copolymers interesting candidates for use as energetic binders in cast-cure applications.enGAPenergetic polymerCopolymerinternal plasticizer660662journal article