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).