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Cellulose and borneol compounded antibacterial material

An antibacterial material, cellulose technology, applied in the directions of fungicides, chemicals for biological control, biocides, etc., can solve the problems of no killing or inhibition of cellulose bacteria, bacterial contamination, etc., to achieve easy implementation, The effect of simple polymer structure

Active Publication Date: 2014-07-09
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Cellulose is a natural polymer material with a wide range of uses, but since cellulose itself has no killing or inhibiting effect on bacteria, the common carboxy-modified cellulose can even be used as a bacterial culture material, so it is widely used in medical treatment, hygiene, environmental protection and There is a problem of bacterial contamination in food and other related fields

Method used

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  • Cellulose and borneol compounded antibacterial material
  • Cellulose and borneol compounded antibacterial material
  • Cellulose and borneol compounded antibacterial material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 1 g of L-borneol and dissolve it in tetrahydrofuran, add 1.5 eq of pyridine, and titrate the reaction with 1.5 eq of chloroacetyl chloride diluent. After the reaction, purify to obtain a colorless oily monomer. Stir the cellulose in 2M NaOH aqueous solution for 2h to carry out alkalization, dry the obtained alkaline cellulose, and dissolve the obtained chloroacetylated borneol derivatives and the ionic liquid-dissolved alkalized cellulose at a structural unit molar ratio of 2 : 1 ratio, stirred at 70°C for 48 hours, after the reaction was stopped, the reaction product was subjected to Soxhlet extraction with ethanol as a solvent, and the ionic liquid and chloroacetylated borneol derivatives were removed after reaction for 48 hours, and dried to obtain the product. The degree of modification is n>5%, and the antibacterial adhesion is greater than 5 days (using experimental strains: Escherichia coli, Staphylococcus aureus, Mucor, Penicillium, etc.).

Embodiment 2

[0026] Weigh 1 g of D-borneol and dissolve it in tetrahydrofuran, add 1.5 eq of pyridine, and titrate the reaction with 1.5 eq of chloroacetyl chloride diluent. After the reaction, purify to obtain a colorless oily monomer. Stir the cellulose in 2M NaOH aqueous solution for 2h to carry out alkalization, dry the obtained alkaline cellulose, and dissolve the obtained chloroacetylated borneol derivatives and the ionic liquid-dissolved alkalized cellulose at a structural unit molar ratio of 2 : 1 ratio, stirred at 70°C for 48 hours, after the reaction was stopped, the reaction product was subjected to Soxhlet extraction with ethanol as a solvent, and the ionic liquid and chloroacetylated borneol derivatives were removed after reaction for 48 hours, and dried to obtain the product. The degree of modification is n>5%, and the antibacterial adhesion is greater than 5 days (using experimental strains: Escherichia coli, Staphylococcus aureus, Mucor, Penicillium, etc.).

Embodiment 3

[0028] Weigh 1 g of Iso-borneol and dissolve it in tetrahydrofuran, add 1.5 eq of pyridine, and titrate the reaction with 1.5 eq of chloroacetyl chloride diluent. After the reaction, purify to obtain a colorless oily monomer. Stir the cellulose in 2M NaOH aqueous solution for 2h to carry out alkalization, dry the obtained alkaline cellulose, and dissolve the obtained chloroacetylated borneol derivatives and the ionic liquid-dissolved alkalized cellulose at a structural unit molar ratio of 2 : 1 ratio, stirred at 70°C for 48 hours, after the reaction was stopped, the reaction product was subjected to Soxhlet extraction with ethanol as a solvent, and the ionic liquid and chloroacetylated borneol derivatives were removed after reaction for 48 hours, and dried to obtain the product. The degree of modification is n>5%, and the antibacterial adhesion is greater than 5 days (using experimental strains: Escherichia coli, Staphylococcus aureus, Mucor, Penicillium, etc.).

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Abstract

The invention relates to a cellulose and borneol compounded antibacterial material, and more specifically relates to a high-molecular structure obtained by modifying cellulose with borneol molecules. The surface of the cellulose and borneol compounded antibacterial material is capable of inhibiting adherence of microorganisms, so that antibacterial effects are achieved. The cellulose and borneol compounded antibacterial material is obtained via etherification of natural cellulose with a chloride acetylated borneol derivative, or via direct esterification of carboxymethyl cellulose with borneol. The cellulose and borneol compounded antibacterial material possesses high-efficient antibacterial effects, is simple in structure, is easy to prepare, and can be widely used in medical industry, health industry, environmental protection industry, or food industry.

Description

technical field [0001] The invention relates to a cellulose composite borneol antibacterial material and a preparation method thereof. The antibacterial material can inhibit microorganisms from adhering to the surface of the prepared material and inhibit the growth of microorganisms, and can be used in related fields such as medical treatment, sanitation, environmental protection and food, and is a green environmental protection product. Background technique [0002] Cellulose is a natural polymer material with a wide range of uses, but since cellulose itself has no killing or inhibiting effect on bacteria, the common carboxy-modified cellulose can even be used as a bacterial culture material, so it is widely used in medical treatment, hygiene, environmental protection and There is a problem of bacterial contamination in applications in food and other related fields. [0003] The invention with the application number 201010128594 discloses a flame-retardant and antibacteria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B13/00A01P1/00A01P3/00
Inventor 王兴石冰
Owner BEIJING UNIV OF CHEM TECH
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