Composite sponge wound dressing made of β-Chitin and Chitosan and method for producing the same

A method for producing composite sponge wound dressing made of β-Chitin and Chitosan, which comprises the steps of:

• a.) providing a β-Chitin and a Chitosan;
• b.) putting said β-Chitin in deionized water (D.I. Water);
• c.) blending said β-Chitin in high speed for forming a hydrogel β-Chitin;
• d.) solving said Chitosan by an acid liquid;
• e.) filtering said Chitosan;
• f.) mixing said hydrogel β-Chitin from step c and said Chitosan from step e;
• g.) forming a sponge by freeze-drying;
• h.) immersing said sponge in an alkaline liquid for forming salt by neutralization;
• i.) cleaning and removing said salt with water until said sponge becoming neutral;
• j.) cleaning said sponge with D.I. Water repeatedly;
• and
• k.) producing a composite sponge wound dressing made of β-Chitin and Chitosan by vacuum drying.