Design of self-healing and self-restoring materials utilizing reversible and movable crosslinks

• DOI: 10.1038/s41427-021-00349-1
• Publication Date: 2022-02-18T02:02:42Z
• Authors: Ryohei Ikura; Junsu Park; Motofumi Osaki; Hiroyasu Yamaguchi; Akira Harada; Yoshinori Takashima
• Keywords: Non-covalent interactions; Self-healing material; Restoring force; Supramolecular Polymers

Abstract Self-healing materials have attracted attention due to their ability regain structure and function after damage. In recent years, significant progress has been made in achieving various functions through supramolecular chemistry. This review describes an overview of the strategies used prepare self-healing self-restoring utilizing reversible movable crosslinks. Reversible crosslinks, consisting noncovalent bonds, can reversibly undergo repeated cleavage reformation. Therefore, be achieved by effectively regenerating crosslinks between polymeric chains. exploit many kinds dynamic covalent bonds such as hydrogen metal coordination ionic interactions, π–π stacking, van der Waals forces, hydrophobic interactions. Movable exhibit properties. Self-restoring original shape mechanical properties a cycle loading unloading external stress. consist polymer chains that penetrate macrocyclic units sliding motion along addition, multiple cross-links produce synergistic effects simultaneously achieve high toughness effective self-healing. We believe will play substantial role realizing sustainable society.