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A kind of sustainable antibacterial film material and preparation method thereof

A technology of antibacterial film and antibacterial agent, which is applied in the field of sustainable antibacterial film materials and its preparation, and can solve problems such as interference with system functions, toxicity, and environmental damage

Active Publication Date: 2022-04-19
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, silver, as the most classic and important antibacterial material, will damage the environment; most organic antibacterial agents can interfere with the gene expression of cells and the systemic functions of related enzymes, but they are also toxic to other organisms cells while inhibiting bacteria

Method used

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  • A kind of sustainable antibacterial film material and preparation method thereof
  • A kind of sustainable antibacterial film material and preparation method thereof

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Effect test

preparation example Construction

[0044]The present invention also provides a method for preparing a sustainable antibacterial film material, comprising the following steps:

[0045] (1) Preparation of amphiphilic silica nanoparticles:

[0046] Using triethoxysilane and platinum (IV) oxide as a catalyst, synthesize 5-(triethoxy) silvaleric acid; mix and react 5-(triethoxy) silvaleric acid and orthosilicic acid to prepare carboxyl-modified Silica particles; Disperse carboxyl-modified silica nanoparticles in n-hexane, add octadecyltrichlorosilane, and stir at room temperature. After the reaction is finished, the product is centrifuged and dried to obtain amphiphilic silica nanoparticles modified by alkyl groups and carboxyl groups. Amphiphilic nanoparticles of different sizes were prepared according to the above steps, with diameters of 10 nanometers, 50 nanometers, 100 nanometers, 500 nanometers, and 1000 nanometers.

[0047] Preferably, the reaction stirring time for preparing the carboxyl-modified silica pa...

Embodiment 1

[0066] (1) Preparation of amphiphilic silica nanoparticles with a size of 10 nanometers: using triethoxysilane and platinum (IV) oxides as catalysts to synthesize 5-(triethoxy) silvaleric acid; 2.2 mmol 5-(triethoxy) silvaleric acid and 14.6 mmol orthosilicic acid were mixed, and added to the mixture of preheated water, cetyltrimethylammonium bromide, sodium hydroxide and ethanol to prepare carboxy-modified bismuth Silicon oxide particles; after the system was stirred for 2 hours, centrifuge and wash with ethanol; add hydrochloric acid tetrahydrofuran solution to the obtained particles, reflux and stir for 12 hours to separate the particles from the hydrochloric acid / tetrahydrofuran solution, and dry them in an oven at 80°C. Disperse the carboxyl-modified silica nanoparticles obtained above into n-hexane, stir to dissolve, add 0.258 mmol of octadecyltrichlorosilane, and stir at room temperature for 12 h. After the reaction, the product was washed successively with n-hexane, et...

Embodiment 2

[0071] (1) Preparation of amphiphilic nanoparticles with a size of 50 nanometers: using triethoxysilane and platinum (IV) oxides as catalysts to synthesize 5-(triethoxy) silvaleric acid; 4.5mmol 5-( Triethoxy) silvaleric acid and 20.2 mmol of orthosilicic acid were mixed and added to a mixture of preheated water, cetyltrimethylammonium bromide, sodium hydroxide and ethanol to prepare carboxy-modified silica particles ; After the system was stirred for 2 hours, centrifuge and wash with ethanol; add hydrochloric acid tetrahydrofuran solution to the obtained particles, reflux and stir for 12 hours to separate the particles from the hydrochloric acid / tetrahydrofuran solution, and dry them in an oven at 80°C. The carboxy-modified silica nanoparticles obtained above were dispersed in n-hexane, stirred and dissolved, 1.28 mmol of octadecyltrichlorosilane was added, and stirred at room temperature for 12 h. After the reaction, the product was washed successively with n-hexane, ethanol...

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Abstract

The invention relates to a sustainable antibacterial film material and a preparation method thereof, belonging to the technical field of surface antibacterial materials. The sustainable antibacterial membrane material of the present invention comprises: a matrix with a porous oil storage structure; non-volatile oil stored in the porous oil storage structure, and amphiphilic nanoparticles modified by an antibacterial agent are dispersed in the oil phase, so The amphiphilic nanoparticles modified by the antibacterial agent can spontaneously adsorb to the surface of the oil phase to form a nanoparticle film with antibacterial effect. The oil is poured into the porous oil storage structure, and due to capillary force, the oil can be stored in the porous oil storage structure for a long time. Nanoparticles can be adsorbed to the oil surface to form a dense particle film. When the nanoparticles in the nanoparticle film are in contact with bacteria or molds, they are adsorbed to the bacteria or molds through electrostatic interactions, and after the bacteria are inhibited or killed, the nanoparticles originally dispersed in the oil phase can be filled into the nanoparticle film, This makes the membrane self-repairing and has a continuous antibacterial effect.

Description

technical field [0001] The invention belongs to the technical field of surface antibacterial materials, and in particular relates to a sustainable antibacterial film material and a preparation method thereof. Background technique [0002] Bacteria are ubiquitous, and their spread poses a serious threat to human health. The surface of any material can be attacked by bacteria or mold, posing a threat to the health of users who use it and those who come into contact with it. For example, bacteria adhere to the surface of medical materials and equipment such as cardiovascular stents, causing infection and causing serious complications. In addition to staining and fading fabrics and causing damage to clothes, microorganisms adhered to textiles can also cause skin allergic reactions, pressure injuries, and bacterial or fungal infections. Therefore, the use of antibacterial materials or antibacterial coatings to inhibit and kill harmful bacteria can effectively improve the level ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L31/02A61L31/08A61L31/14A61L31/16
CPCA61L31/022A61L31/16A61L31/146A61L31/14A61L31/088A61L2400/12A61L2300/606A61L2300/404
Inventor 王大鹏吕凯旋
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI