Rice starch based biodegradable packaging film and preparation method thereof

Abstract

The invention discloses a rice starch based biodegradable packaging film and a preparation method thereof. The rice starch based biodegradable packaging film is prepared from the following raw materials in percentage by weight: 15-55% of rice starch, 0.01-0.1% of alpha-amylase, 5-15% of chitosan, 2-10% of sodium benzoate, 2-10% of potassium sorbate, 2-10% of propionic anhydride, 10-55% of polyvinyl alcohol, 0.01-0.05% of a crosslinking agent, and 0.8-10% of a plasticizer and 15-30% of distilled water. The invention also discloses a preparation method of the rice starch based biodegradable packaging film. The rice starch based biodegradable packaging film disclosed by the invention is strong in antibacterial activity, good in water resistance and acid and alkali resistance, and high in strength, and after being disposed, can be decomposed into carbon dioxide and water by microorganisms in environments.

Description

technical field

[0001] The invention relates to a biodegradable packaging film and a preparation method thereof, in particular to a rice starch-based biodegradable packaging film and a preparation method thereof. Background technique

[0002] At present, the packaging films used by people in daily life are mainly polyethylene or polyvinyl chloride plastic films. These plastic films are difficult to be decomposed by soil microorganisms and absorbed by plant roots. caused adverse effects. Moreover, these polyethylene or polyvinyl chloride plastic films have no antibacterial ability, so it is difficult to preserve the food packaged in this film for a long time, which brings hidden dangers to food safety. For a long time, people have used different methods to improve the performance of plastic films for daily life packaging, but none of them can fundamentally solve the problem of biodegradability of plastic films. On the other hand, in the process of rice processing, it is ine...

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