High water content hydrogels with instant mechanical recovery, anti-high temperature and anti-high ionic strength properties

In this work, we show how simple mixing of mineral clay materials and a biopolymer chitosan to afford hydrogel composites with significantly enhanced performances in instant mechanical recovery and self-healing, anti-high temperature and anti-high ionic strength activities. Benefited by the electrostatic attraction between anionic clay and cationic chitosan, molecular level coassembly was achieved, which gave rise to a robust and rapidly...