Polyurethane elastomers based on triple reversible networks with accelerated self-healing by photothermal conversion

Thermoplastic polyurethane (TPU) supramolecular networks with hybrid hard segments composed of 1,4-benzoquinone dioxime (BQDO) and/or ureidopyrimidinone (UPy) have been successfully achieved through pre-polymerization and subsequent chain extension.