Polyvinyl alcohol gelatin starch hydrogel and preparation method thereof

The invention belongs to the technical field of hydrogel. The invention provides polyvinyl alcohol gelatin starch hydrogel. The polyvinyl alcohol gelatin starch hydrogel is prepared from the following raw materials in parts by mass: 10 to 15 parts of polyvinyl alcohol, 3 to 6 parts of gelatin, 5 to 10 parts of starch, 5 to 8 parts of chitosan, 0.1 to 0.3 part of graphene oxide, 0.8 to 1.2 parts of glycerol and 40 to 50 parts of water. The invention also provides a preparation method of the polyvinyl alcohol gelatin starch hydrogel. The polyvinyl alcohol gelatin starch hydrogel disclosed by the invention is good in compatibility of all components, good in film-forming property, excellent in biodegradability, tensile strength, elongation at break and tearing strength, remarkably improved in mechanical property and swelling degree, and capable of being widely applied to the fields of biomedicine, food, cosmetics and the like. The raw materials are wide in source, and the preparation method is simple and suitable