Recent advances in chitosan-based self-healing materials

Over the past few decades, self-healing materials derived from chitosan have attracted a great deal of attention due to their excellent physical and biological properties related to their self-healing ability, biodegradability, biocompatibility and antibacterial activity. This review discusses the most recent progress in the preparation and application of chitosan-based self-healing materials. Various strategies that have been used to prepare chitosan-based self-healing materials are reviewed, including the construction of dynamic covalent and non-covalent bonds. Applications of chitosan-based self-healing hydrogels and coatings in tissue engineering, drug delivery systems and anti-corrosion are also discussed.