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Nano polyaniline/ZnO composite antibacterial agent and preparation method thereof

A technology of composite antibacterial agent and nano-polyaniline, which is applied in the field of polyaniline/ZnO composite antibacterial agent and its preparation, can solve the problem of process stability and quality repeatability control of nano-powder storage and transportation technology. Solve and control the particle shape, distribution, particle size, performance and the control and dispersion of aggregates and other technologies, such as insufficient research and development of nano-zinc oxide application technology, to achieve good synergistic antibacterial properties, good thermal stability and biocompatibility Sexuality, excellent bactericidal effect

Inactive Publication Date: 2014-08-06
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mainly manifested in: the lack of in-depth research on the process mechanism of synthesizing nano-zinc oxide and its composites, and the lack of research on the technology of controlling the shape, distribution, particle size, performance, and aggregate control and dispersion of particles; the stability of the process The technical problems of the control of stability and quality repeatability and the storage and transportation of nano-powders have not been well resolved; the development of the application technology of nano-zinc oxide is not enough, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: The preparation method of this polyaniline antibacterial agent, concrete operations are as follows:

[0020] (1) Weigh 1g of sodium hydroxide and dissolve it in 50ml of distilled water, add aniline monomer with a molar concentration of 0.5 mol / L to it, and stir evenly at room temperature to form A liquid; weigh solid ammonium persulfate and dissolve it in distilled water and stir evenly to form liquid B, wherein the molar ratio of aniline to ammonium persulfate is 5:1; quickly pour liquid B into liquid A at room temperature, and let stand at room temperature for 10 h;

[0021] (2) Use vacuum filtration to separate the reaction system in step (1), and wash with distilled water and ethanol in turn until the pH of the washing solution is 7;

[0022] (3) The obtained solid was vacuum-dried at 70 °C for 12 h to obtain the polyaniline antibacterial agent.

[0023] The diameter of the polyaniline fiber obtained by the above comparison experiment is about 80nm, and...

Embodiment 2

[0024] Example 2: The preparation method of this nanometer polyaniline / ZnO composite antibacterial agent, concrete operation is as follows:

[0025] (1) Dissolve 1 g of sodium hydroxide in 50 ml of distilled water, add aniline monomer with a molar concentration of 0.1 mol / L, and stir evenly at room temperature to form liquid A; weigh ammonium persulfate and zinc nitrate solids Dissolve the particles in distilled water and stir evenly to form liquid B, in which the concentration of zinc nitrate is 1 / 20 of the molar concentration of aniline, and the molar ratio of aniline to ammonium persulfate is 10:1; quickly pour liquid B into A at room temperature solution, let stand at room temperature for 8 h;

[0026] (2) Use vacuum filtration to separate the reaction system in step (1), and wash with distilled water and ethanol in sequence until the pH of the washing solution is 7;

[0027] (3) The obtained solid was vacuum-dried at 60 °C for 10 h, and finally the dried solid was furt...

Embodiment 3

[0029] Example 3: The preparation method of this nanometer polyaniline / ZnO composite antibacterial agent, concrete operation is as follows:

[0030] (1) Dissolve 2g of sodium hydroxide in 50ml of distilled water, add aniline with a molar concentration of 0.3 mol / L, and stir evenly at room temperature to form liquid A; weigh ammonium persulfate and zinc nitrate solid particles and dissolve in distilled water, and stir evenly to form liquid B, wherein the concentration of zinc nitrate is 1 / 15 of the molar concentration of aniline, and the molar ratio of aniline to ammonium persulfate is 8:1; quickly pour liquid B into liquid A at room temperature, Stand at room temperature for 10 h;

[0031] (2) Use vacuum filtration to separate the reaction system in step (1), and wash with distilled water and ethanol in turn until the pH of the washing solution is 7;

[0032] (3) The obtained solid was vacuum-dried at 80 °C for 8 h, and finally the dried solid was further vacuum-dried at 17...

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Abstract

The present invention disclosed a nano -polyiline / ZnO composite antibacterial agent and its preparation method. The invention adopts a fast mixed method to synthesize the precursor polyiline / Zn (OH) 2, and then dry the polyiline / ZNO composite antibacterial agent;Ailine exists in the form of nano -fiber, and zinc oxide exists in a ball -shaped structure with a diameter of 20 ~ 200nm; the nano -polyiline / ZnO composite antibacterial agent provided by the present invention pairs of E. coli, Staphylococcus aureus, Bacillus, etc.They all have excellent sterilization effects.The cost of raw materials for this composite antibacterial agent is low, simple preparation, and good thermal stability. The nano ZNO particles are evenly distributed and larger than the surface area.The disadvantages, at the same time, have excellent biocompatibility, are non -toxic, harmless to the human body, are easy to industrialized, and have high economic and social value.

Description

technical field [0001] The invention relates to a polyaniline / ZnO composite antibacterial agent and a preparation method thereof, belonging to the field of antibacterial materials and preparations. technical background [0002] Health has always been one of the topics that people pay the most attention to. People are frequently exposed to a large number of bacteria in their daily work and life. Most of these bacteria are pathogenic bacteria, which directly threaten people's health. In order to protect human health, the development and application of antibacterial materials is an effective method. However, with the extensive use of chemical drugs such as antibiotics, disinfectants and bactericides, more and more bacterial mutation populations caused by drug resistance have caused frequent global bacterial disasters. In order to prevent the occurrence of bacterial disasters, it is imperative to develop and apply new antibacterial materials. Inorganic antibacterial materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16A01N25/10A01P1/00
Inventor 陕绍云李丹贾庆明王亚明蒋丽红
Owner KUNMING UNIV OF SCI & TECH
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