An unparalleled H-bonding and ion-bonding crosslinked waterborne polyurethane with super toughness and unprecedented fracture energy
Yuan Yao, Bo Liu, Ziyang Xu, Jianhai Yang, Wenguang Liu
Abstract
). Due to the dynamic reconstruction of reversible H-bonds and ionic bonds, the WPU elastomer demonstrates a robust self-healability at 50 °C, allowing complete recovery of mechanical properties. Importantly, the thermoplasticity and reprocessability of WPUs enable direct 3D printing of different objects and electrospinning of tubes, showing great potential for expanding their application scope in soft robots and artificial stents.
Topics & Concepts
Materials sciencePolyurethaneComposite materialFracture toughnessUltimate tensile strengthToughnessIonic bondingIonFracture (geology)Bonding strengthChemistryOrganic chemistryPolymer composites and self-healingPolydiacetylene-based materials and applicationsElectrospun Nanofibers in Biomedical Applications