Chitin is the most natural macromolecular compound in the world, except for the celluse. It exists in all kinds of the marine arthropod, such as shrimp and crab. It also widespread exists in the pericellular membrane of some fungus, insects, and algae, and in the cell walls of the advanced plant. The chitosan is the result of chitosan＇s dis-ethanoyl. Chitosan is the unique basic amino polyoses in the world, and it has so many physical and chemical properties and also some physiological actions. Chitasan has so much use value in textile industr...
