Salinity durable self-healing hydrogels as functional biomimetic systems based on the intercalation of polymer ions into mica

Self-healing hydrogels were prepared in water via the intercalation of cationic substituents of polymer chains into the interlayers of mica, a layered inorganic compound. The obtained materials showed high tolerance to various environmental conditions, whereas their self-healing properties were not affected even under high salinity conditions. Since the human body contains high salt concentrations, the enhanced mechanical strength and durability of the prepared self-healing hydrogels under these conditions can be exploited for their application as artificial biomaterials, including skins, muscles, and cartilages, to heal injuries similarly as the human body. [Display omitted] •Novel self-healing mechanism via intercalation properties of layered inorganic compounds.•Self-healing surface using intercalation showing high tolerance toward harsh conditions, especially salinity conditions.•Preparation and usage of hetero self-healed gel as a heat responsive actuator.