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Method for preparing nano-antibiotic materials

A nano-antibacterial material and nano-particle technology, applied in botany equipment and methods, animal repellants, biocides, etc., can solve problems such as environmental pollution, antibacterial function disappearance, and material loss of function, so as to achieve no pollution to the environment, antibacterial The effect of efficacy improvement

Inactive Publication Date: 2003-11-19
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: nanoparticle adopts 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 and used 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 to obtain polyethyleneimine (PEI)-linked modified nanoparticles , collected by centrifugation, washed several times with methanol, then placed in 100ml pentaerythritol solution, added 10ml 1-bromohexane and appropriate amount of KOH, reacted and stirred at 90°C for 20 hours, collected by centrifugation, washed several times with methanol to obtain hexane The polyethylenimine (PEI) nano-par...

Embodiment 2

[0011] Using TiO 2 Nanoparticles, prepared nanoparticles 10g, in containing 9ml1,4-dibromobutane, 0.1ml triethylamine in 100ml nitromethane solvent, stirred and reacted for several hours, the surface of nanoparticles was covered with 1,4-dibutylbromide Activated by alkanes, then collected by centrifugation, washed several times with nitromethane, placed in 100ml nitromethane solvent, added 10g poly-4-vinylpyridine (PVP), and reacted with stirring 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, methanol After washing, nano antibacterial particles containing poly-4-vinylpyridine (PVP) quaternary ammonium salt molecules are obtained.

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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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IPC IPC(8): A01N25/12A01N59/16
Inventor 邱树毅
Owner 邱树毅
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