| abstract |
The invention belongs to the technical field of biodegradable high polymer materials, and provides a preparation method of a novel high-performance bio-based degradable packaging film. Solves the technical problems of poor film forming property, poor film property, high cost and the like of the existing biodegradable material for preparing the packaging film. The degradable packaging film comprises the following components: 70-90 parts of poly (4-hydroxybutyrate) (P4HB), 10-20 parts of filler, 3-5 parts of compatilizer, 0.3-2 parts of nucleating agent, 0.5-3 parts of chain extender, 2-5 parts of lubricant and 0.5-2 parts of antioxidant. Meanwhile, the P4HB blown film is prepared by adopting a proper process and shearing conditions, and the P4HB packaging film has the advantages of easy degradation, easy processing, tear resistance, high strength, good toughness, moderate cost and the like, and can truly replace polyolefin materials to be used for plastic bags, express packaging and the like. |