Abstract
AbstractCopolymers 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.
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