Macromolecules, Vol.48, No.17, 6132-6141, 2015
A Thermoreversible Supramolecular Polyurethane with Excellent Healing Ability at 45 degrees C
We report the synthesis and characterization of a healable, elastomeric shape recovery supramolecular polyurethane whose properties result from self-complementary pi-pi stacking and hydrogen bonding interactions plus phase separation. ESEM analysis and photographic images have revealed that this material can heal at 45 degrees C in 15 min to recover the mechanical properties of the pristine material with healing efficiencies >99%. This supramolecular polyurethane is also able to recover an applied strain of 25% within S min of release of the load.