Interpenetrating Polymer Networks from Polymeric Imidazolium-type Ionic Liquid and polybutadiene

摘要

Interpenetrating polymer networks (IPNs) based on polybutadiene (HTPB) and polymeric ionic liquid (PIL) networks were prepared using an in situ strategy. PIL network is obtained from a free radical co-polymerization of an ionic liquid monomer (ILM) and poly(ethylene glycol) dimethacrylate initiated with azobisisobutyronitrile. HTPB network is formed by isocyanate-alcohol addition between the hydroxyl end groups of telechelic HTPB and a pluri-isocyanate cross-linker, catalyzed by dibutyltindilaurate. The IPN containing 72 wt% PIL network exhibits one mechanical relaxation temperature as determined by Dynamic Mechanical Thermal Analysis (DMTA).