| abstract |
The invention discloses a preparation method of a green degradable composite film. Cross-linked starch is used to improve the water resistance of traditional starch films. After compounding sodium carboxymethyl cellulose and cross-linked starch, the film-forming properties and mechanical properties of the starch films are improved. After adding fillers for compounding, the mechanical properties of the starch film are improved, and the nano-silica is coated on the composite film-forming liquid to improve the hydrophobicity of the starch film; the invention solves the poor water resistance and formation of a single starch film The problems of poor film properties, poor mechanical properties, poor water resistance, etc., and the preparation process of the composite membrane is simple and environmentally friendly, and the prepared composite membrane has good mechanical properties, film-forming properties, water resistance, hydrophobicity and degradability. It can be used in food packaging, fruit and vegetable preservation, meat preservation, agricultural mulch film, book cover, tape substrate and other fields. |