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Method for preparing antibiosis (coating) film

A technology of antibacterial agent and nano antibacterial agent, which is applied in the field of preparation of nano antibacterial film, can solve the problems of easy inactivation, failure, and easy detachment of antibacterial agents, and achieve the effects of long-lasting antibacterial effect, improved performance, and simple process

Inactive Publication Date: 2005-01-12
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this type of antibacterial (coating) film is that the combination of the antibacterial agent and the film material is not firm, it is easy to detach, and the antibacterial agent is easy to inactivate and fail to achieve the antibacterial purpose.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0012] Embodiments of the invention:

[0013] 1. Preparation of polysaccharide antibacterial film: first prepare nanopowder with antibacterial functional groups, use silica nanoparticles, and use the method disclosed in Chinese patent application 03117920.7 to generate covalently linked quaternary ammonium salt polymer antibacterial agents Nano powder. The method is: 10g of nano-particle silicon dioxide, in 100ml of solvent chloroform, react with 2ml of 4-bromobutyryl chloride at room temperature with stirring, so that the surface of the nanomaterial is activated by 4-bromobutyryl chloride, and the activated nanomaterial is collected. Wash with methanol solvent, then place in 100ml of pentaerythritol solvent, add 10g of polyethyleneimine and appropriate amount of potassium hydroxide, stir and react at 90°C to obtain nanoparticles covalently linked by polyethyleneimine, after collection Wash several times. Place in 100ml of pentaerythritol, add 10ml of 1-bromohexane and an ap...

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PUM

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Abstract

In the preparing method, nanoantibiotic powder is prepared by connecting germicide covalency of quaternary ammoium salt or quaternary phosphorus salt polymer on nanopowder through covalent decoration method in utilizing nanopowder with functional perssad of antibiosis, prepared powder is disposed to be antibiotic solution containing 0.01-0.1% nanogermicide and then the colution is added into four sorts of film forming materials for making film with conventional process.

Description

Technical field: [0001] The invention relates to a preparation method of a nanometer antibacterial (coating) film. technical background: [0002] The preparation methods of existing antibacterial (coating) films generally all use organic antibacterial agents such as organic acids, antibacterial peptides, biological enzymes, etc. Combining, using different intermolecular interactions to form an antibacterial (coating) film with a porous network structure. The problem of this type of antibacterial (coating) film is that the combination of the antibacterial agent and the film material is not firm, and it is easy to detach, and the antibacterial agent is easy to inactivate and fail to achieve the antibacterial purpose. Invention content: [0003] The purpose of the present invention is to adopt nanopowder with antibacterial functional groups, utilize the large specific surface area and strong adsorption performance of nanopowders, make antibacterial functional groups attached...

Claims

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Application Information

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IPC IPC(8): A01N25/34C08J5/18C08L37/00C08L89/00
CPCA01N25/34
Inventor 邱树毅王广莉叶丹曹建新周宏翔吴鑫颖
Owner GUIZHOU UNIV
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