Poly(4-hydroxybutyrate) biodegradable packaging film and preparation method thereof

A technology of hydroxybutyrate and packaging film, which is applied in the field of preparation of biodegradable poly packaging film, can solve the problems of complex biological fermentation process, difficult product purification, poor stability, etc., and achieve cost reduction of degradation cycle, strength and Similar toughness and large blow-up ratio
CN111961322BActive Publication Date: 2022-02-22QINGDAO UNIV OF SCI & TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QINGDAO UNIV OF SCI & TECH
Publication Date
2022-02-22

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Abstract

The invention belongs to the technical field of biodegradable polymer materials, and provides a preparation method of a novel high-performance, bio-based degradable packaging film. The technical problems of poor film-forming property, poor film performance and high cost existing in the preparation of packaging films from existing biodegradable materials are solved. 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 compatibilizer, and 0.3-2 parts of nucleating agent , 0.5-3 parts of chain extender, 2-5 parts of lubricant, 0.5-2 parts of antioxidant. At the same time, the P4HB blown film is prepared by adopting appropriate technology and shearing conditions. The P4HB packaging film has the advantages of easy degradation, easy processing, tear resistance, high strength, good toughness, and moderate cost. It can really replace polyolefin materials for Plastic bags, express packaging, etc.
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Description

technical field

[0001] The invention relates to a preparation method of a biodegradable poly(4-hydroxybutyrate) packaging film, belonging to the technical field of biodegradable polymer materials. Background technique

[0002] In recent years, the treatment of pollution caused by non-degradable plastics and the problem of petrochemical resources have become the focus of attention all over the world. Solving the pollution caused by plastics is a major scientific and technological issue facing countries all over the world. my country attaches great importance to the treatment of plastic pollution, and has listed the formulation of a comprehensive treatment plan for "white pollution" as a key reform task, and reviewed and approved the "Opinions on Further Strengthening Plastic Pollution Control" in early 2020 (Fagai Huanzi

[2020] No. 80) . The "Opinions" make it clear that by 2020, the production, sale and use of some plastic products will be banned and restricted in some regio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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