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Method for preparing nano-antibiotic materials

A nano-antibacterial material, nano-particle technology, applied in the directions of botanical equipment and methods, chemicals for biological control, fungicides, etc., can solve problems such as material loss of function, disappearance of antibacterial function, environmental pollution, etc., and achieve antibacterial effect. The effect of improving, high antibacterial efficiency and not polluting the environment

Inactive Publication Date: 2006-07-12
邱树毅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem is that after the metal material is released, the antibacterial function of the material disappears, so the material loses its effect, and the release of metal ions will also cause environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1 of the present invention: Nanoparticles adopt SiO 2 , 10 g of the prepared nanoparticles were mixed with 2 ml of 4-bromobutyryl chloride in 100 ml of solvent chloroform and reacted with stirring at room temperature for several hours, so that the surface of the nanomaterials was activated by 4-bromobutyryl chloride, and the activated nanomaterials were collected by centrifugation. Wash with methanol for several times, then place in 100ml of pentaerythritol solvent, add 10g of polyethyleneimine (PEI) and appropriate amount of KOH, stir and react at 90°C for 20 hours, and obtain polyethyleneimine (PEI)-linked modified nanoparticles The particles were collected by centrifugation and washed several times with methanol, then placed in 100ml of pentaerythritol solution, added 10ml of 1-bromohexane and appropriate amount of KOH, reacted and stirred at 90°C for 20 hours, collected by centrifugation and washed several times with methanol to obtain The hexane-alkylate...

Embodiment 2

[0011] Using TiO 2 Nanoparticles, prepared nanoparticles 10g, in containing 9ml 1,4-dibromobutane, 100ml nitromethane solvent of 0.1ml triethylamine stirring reaction several hours, the nanoparticle surface is covered with 1,4-dibutyl Bromothane was activated, then collected by centrifugation, washed several times with nitromethane, placed in 100ml of nitromethane solvent, added 10g of poly-4-vinylpyridine (PVP), and stirred at 75°C for 24 hours to obtain poly-4-vinylpyridine (PVP) modified and linked nanoparticles; collected by centrifugation, washed several times with nitromethane, then placed in nitromethane solvent, added 10ml 1-bromohexane, stirred at 75 ° C for 24 hours, and collected by centrifugation , washed with methanol to obtain nano antibacterial particles containing poly-4-vinylpyridine (PVP) quaternary ammonium salt molecules.

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PUM

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Abstract

The process for preparing nano-class antibacterial material features that nanoparticles is linked with antibacterial moleculae by co-valent modification, and includes such steps as mixing nanoparticles with double-function active groups, reacting while stirring to obtain activated nano particles, reacting on nitrogen-contained polymer in organic solvent, and reacting on alkylating reagent in organic solvent. Its advantages are high effect and durability, and no environmental pollution.

Description

Technical field: [0001] The invention belongs to a preparation method of nanometer antibacterial material. technical background: [0002] Existing nano-antibacterial materials are prepared by mixing nano-materials with metal ions such as Ag+. Utilize the antibacterial activity of metal ion Ag+, and achieve the purpose of antibacterial through its slow release. The main problem is that after the metal material is released, the antibacterial function of the material disappears, so the material loses its effect, and the release of metal ions will also cause environmental pollution. Invention content: [0003] The purpose of the present invention is to: provide a kind of nano material that adopts covalent modification method to prepare, utilize bifunctional group reagent, one end is connected on the surface of nano material, and the other end is connected with antibacterial function molecule, and obtain nano antibacterial material, make nano material It has antibacterial fun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/12A01N59/16A01P3/00
Inventor 邱树毅
Owner 邱树毅