Preparation method of novel degradable bio-based fresh-keeping logistics packaging material

A packaging material and bio-based technology, applied in the field of functional polymer materials, can solve the problems of not being able to achieve the preservation effect of agricultural products, and achieve the effects of good biodegradability, good spatial structure, and prolonged preservation time

Inactive Publication Date: 2017-05-31
JIANGNAN UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

And PLA is used more as the main body, and PBAT can flexibly regulate it, but neither of these two films can achieve the fresh-keeping effect of agricultural products.

Method used

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  • Preparation method of novel degradable bio-based fresh-keeping logistics packaging material
  • Preparation method of novel degradable bio-based fresh-keeping logistics packaging material

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Experimental program
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Embodiment Construction

[0013] 1. Combination of dopamine and MOFs materials

[0014] Dissolve 60.8 mg of dopamine in 10.5 mL of PBS buffer solution with pH=8.5, and then place 24.2 mg of metal-organic frameworks (MOFs) in the mixed solution at room temperature under stirring with a magnetic stirrer, and disperse fully. The dispersed mixed solution is put into a centrifuge and centrifuged at 7800 rpm for 10 minutes, the centrifuged solution is frozen in the refrigerator for 1 day, and the fully frozen solution is distilled for 48 hours to obtain the product.

[0015] 2. Molecular regulation of PLA / PBAT membranes by composite materials of dopamine and MOFs

[0016] It is characterized in that 526mg, 68mg of PLA and 27.22mg of PBAT are added in 12ml of chloroform as a solvent, and then 2mL of methanol is added to the mixed solution, and 5.6 mg of the MOFs prepared above are dispersed in the mixed solution, and after being fully dispersed, they are obtained by spreading on a glass plate to form a film ...

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Abstract

The invention provides a preparation method of a novel degradable bio-based fresh-keeping logistics packaging material, belonging to the technical field of functional polymer materials. In order to improve the mechanical strength and air barrier property of a packaging film material, the preparation method takes biodegradable polylactic acid (PLA) as a base material, and can increase the toughness by adding poly (butyleneadipate-co-terephthalate) into the base material for blending; furthermore, a catechol-base modified metal organic skeleton compound which is prepared in advance is added into the mixture; the modified metal organic skeleton compound enables adjustable channels to be formed among chain molecules in a membrane, so that the aim of changing the air barrier property is achieved; the modified metal organic skeleton compound also has an enhancement effect for a polymer. The polymer film prepared by the method has good biodegradability, better air barrier property and certain strength, thus being used for the field of logistics packaging of fresh agricultural and subsidiary products.

Description

technical field [0001] The invention discloses a preparation method of a novel degradable bio-based fresh-keeping logistics packaging material, which belongs to the field of functional polymer materials. Background technique [0002] Food is rich in protein and high in water content, which is easy to breed microorganisms and cause spoilage, which greatly shortens the shelf life of food. In recent years, the economic losses caused by rot and deterioration of fresh agricultural and sideline products all over the world are very huge. Therefore, to ensure the quality of food, Prolonging the shelf life and preventing spoilage of food and raw materials are important tasks in the food industry. Many traditional preservation methods such as drying, salting, heating, canning, etc. will change the flavor, texture, and even the overall characteristics of the processed food, while food preservation such as freeze-drying, controlled atmosphere storage, radiation preservation, microwave s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08L87/00C08J5/18
CPCC08L67/04C08J5/18C08J2367/04C08J2467/02C08L2201/06C08L2201/14C08L2203/16C08L2205/03C08L67/02C08L87/00
Inventor 吴波柏凯孔思予李思凡乔世裕施冬健陈明清
Owner JIANGNAN UNIV
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