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Preparation method of chitosan-metal organic framework antibacterial material

A metal-organic framework, antibacterial material technology, applied in the fields of botanical equipment and methods, chemicals for biological control, biocides, etc. Excellent broad-spectrum antibacterial performance, low cost, and application reduction effect

Inactive Publication Date: 2020-03-24
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional modified chitosan antibacterial materials have limited antibacterial properties, complex modification methods, and even the introduced quaternary ammonium salts are highly toxic and harmful substances, which cannot be well applied in safe and healthy service items such as wound healing and food preservation.

Method used

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  • Preparation method of chitosan-metal organic framework antibacterial material
  • Preparation method of chitosan-metal organic framework antibacterial material
  • Preparation method of chitosan-metal organic framework antibacterial material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of chitosan@metal organic framework antibacterial material, comprising the following steps:

[0033] (1) Take one part of chitosan in parts by weight, one part of 1g / ml metal salt solution, and one part of 1mg / mL carboxylic acid organic ligand solution; Sugar is mixed with mass concentration and is the chitosan solution of 0.1%, for subsequent use; The metal salt used in the described metal salt aqueous solution is copper nitrate, and in the described carboxylic acid organic ligand solution, the used carboxylic acid organic ligand The body is trimesic acid, and the solvent used is dehydrated alcohol;

[0034] (2) Add the chitosan solution dropwise into the metal salt solution and react fully for 3 hours to obtain the chitosan metal ion cross-linked product; put the chitosan metal ion cross-linked product into a hydrothermal reaction kettle, add carboxylic acid organic Ligand solution, mix well, and react at 30°C for 45h;

[0035] (3) Take it out t...

Embodiment 2

[0037] A preparation method of chitosan@metal organic framework antibacterial material, comprising the following steps:

[0038] (1) Take one part of chitosan in parts by weight, one part of 40g / ml metal salt solution, and one part of 70mg / mL carboxylic acid organic ligand solution; Sugar is mixed with mass concentration and is the chitosan solution of 1.5%, for subsequent use; The metal salt used in the described metal salt solution is copper sulfate, and in the described carboxylic acid organic ligand solution, the used carboxylic acid organic ligand The body is terephthalic acid, and the solvent used is the solvent obtained by preparing absolute alcohol and water in a ratio of 1:1 by volume;

[0039] (2) Add the chitosan solution dropwise into the metal salt solution and react fully for 4 hours to obtain the chitosan metal ion cross-linked product; put the chitosan metal ion cross-linked product into a hydrothermal reaction kettle, add carboxylic acid organic Ligand solution...

Embodiment 3

[0042] A preparation method of chitosan@metal organic framework antibacterial material, comprising the following steps:

[0043] (1) Take one part of chitosan in parts by weight, one part of metal salt solution prepared by adding 100 g of metal salt and 1 ml of water, one part of 110 mg / mL carboxylic acid organic ligand solution; Weak acid is solvent and chitosan is mixed with mass concentration and is the chitosan solution of 3%, for subsequent use; The metal salt used in the described metal salt aqueous solution is zinc chloride, and in the described carboxylic acid organic ligand solution, The carboxylic acid organic ligand used is ethylenetriamine, and the solvent used is the solvent obtained by preparing absolute alcohol, water and dimethylformamide in a ratio of 1:1:1 by volume;

[0044] (2) Add the chitosan solution dropwise into the metal salt solution and react fully for 6 hours to obtain the chitosan metal ion cross-linked product; put the chitosan metal ion cross-li...

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Abstract

The invention belongs to the technical field of polymer composite material synthesis, and particularly relates to a preparation method of a chitosan-metal organic framework antibacterial material. According to the method, an organic-frame material is introduced for the first time to synergistically enhance the antibacterial ability of chitosan; the chitosan, metal salt and carboxylic acid organicligands are used as raw materials; the chitosan-coated metal organic framework antibacterial material(CS-coated MOFs)is prepared by adopting a simple hydrothermal reaction or self-assembly method; thechitosan-coated metal organic framework antibacterial material(CS-coated MOFs)prepared by the method has excellent broad-spectrum antibacterial performance; the antibacterial effect of the chitosan is greatly improved, and the material can be used in the medical field, food preservation and other safety and health service projects, so that the application of antibiotic reagents is reduced, and aguarantee support is provided for the public health service industry.

Description

technical field [0001] The invention belongs to the technical field of polymer composite material synthesis, and in particular relates to a preparation method of chitosan@metal organic framework antibacterial material. Background technique [0002] Metal Organic Frameworks (MOFs), also known as metal organic coordination polymers, are a new class of porous materials that have attracted widespread attention and attention from scholars in recent years. Metal-organic frameworks (MOFs) materials are a class of materials with a shape and structure that only allow specific molecules to enter the pores. This type of compound mainly connects inorganic metal ions with oxygen atoms and nitrogen atoms in organic ligands. The choice of ligands can obtain MOFs materials with different compositions and structures; the size and shape of MOFs pores can be adjusted through the design of organic ligands; the chemical properties of MOFs pore surfaces can be changed by modifying the functional ...

Claims

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Application Information

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IPC IPC(8): C08G83/00C08B37/08A01N59/16A01N59/20A01N43/16A01P1/00
CPCA01N43/16A01N59/16A01N59/20C08B37/003C08G83/008
Inventor 林宝凤杨见伟张远程黄国焕邓永福
Owner GUANGXI UNIV
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