A Short Review on Self-Healing Thermoplastic Polyurethanes

Thermoplastic polyurethane (TPU) is a melt-processing polymer with a high elasticity, high tensile strength, low-temperature resistance, wear-resistance, and corrosion resistance ability. TPU can be used in the automotive industry, electronics, medical supplies, coatings, and sports equipment. Introduction of self-healing performance has made a considerable contribution to the service life and recyclability of TPU. The present article analyzes recent progress in self-healing supramolecular TPUs. In particular, the importance of self-healing mechanisms governed by covalent bonds and non-covalent interactions in polymer design that allows for balancing mechanical performance and repairability is summarized. The critical issues and challenges associated with self-healing supramolecular TPUs are also discussed.

Automated summary

Thermoplastic polyurethane (TPU) exhibits high elasticity, tensile strength, and resistance to various conditions, making it suitable for applications in automotive, electronics, medical, coatings, and sports equipment industries. Introduction of self-healing capabilities has significantly improved the service life and recyclability of TPU. Recent research focuses on self-healing supramolecular TPUs, highlighting the importance of balancing mechanical performance and repairability through covalent and non-covalent interactions, while addressing critical issues and challenges associated with this technology.