Preparation of soluble Chitosan by mechnochemistry process

摘要

The active technology of the mechnochemistry process is studied. Structure of chitin during this process is characterized by infrared spectroscopy (IR) and scanning electron microscopy (SEM). Different mechanical activating time and size of shrimp shell have effects on solubility, which have been examined respectively. The results indicate that the mechanical-chemical process cause remarkable impact on changing molecular structure,among which stirring time 、quantity of shrimp shell ground at a time are the most obvious phenomenon effecting water-solubility of chitosan. The crystal structure of chitin in shrimp shell is destroyed in mechanical-chemical process and changed from chitin to chitosan in a short time, taken off the acetyl group.