Preparation of nanochitin hydrogel with adjustable inter-structure by sequencial genipin crosslinking and ice-templating under acid condition.

In this work, genipin crosslinked chitin nanofibril hydrogels/cryogels were successfully prepared. Due to the acidic disperse nature of positively charged chitin fibrils, the pH nature for the chemical crosslinking between chitin nanofibrils and genipin was restricted under 5.0.