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A functional nanomaterial with antibacterial activity and preparation method thereof

A nanomaterial and antibacterial activity technology, which is applied in the field of functional nanomaterials with antibacterial activity and its preparation, can solve the problems of poor wear resistance and affect the service life of materials, and achieves strong wear resistance, improved service life, good wear resistance, etc. The effect of antimicrobial activity and abrasion resistance

Inactive Publication Date: 2020-11-10
HENAN UNIV OF URBAN CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned antibacterial materials prepared by electrospinning can effectively kill bacteria, the current preparation process of such materials is either to fuse silver ions into the antibacterial materials, or to deposit a silver film or a silver ion film on the surface of the substrate. , coating ≤ 1 layer, single coating or no coating material has poor wear resistance, which affects the service life of the material

Method used

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  • A functional nanomaterial with antibacterial activity and preparation method thereof

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preparation example Construction

[0026] The invention provides a method for preparing a functional nanomaterial with antibacterial activity, comprising the following steps:

[0027] S1, preparation of base fiber

[0028] adding the ethylene-vinyl alcohol copolymer into the isopropanol-water solution to completely dissolve the ethylene-vinyl alcohol copolymer to obtain a base material solution, which is subjected to electrospinning with an electrospinning apparatus to prepare base material fibers; Wherein the volume ratio of Virahol and water in Virahol-water solution is 7:3;

[0029] S2, Surface modification of substrate fibers

[0030] Deposit a silver film on the surface of the substrate fiber by an ion sputtering instrument to obtain silver-loaded nanofibers; the sputtering conditions of the ion sputtering instrument are: argon is used as the filling gas, the degree of vacuum is 0.1MPa, the current is 25mA, and the deposition time is 8~30min;

[0031] S3, Surface modification of silver-loaded nanofibers...

Embodiment 1

[0035] A method for preparing functional nanomaterials with antibacterial activity, comprising the following steps:

[0036] S1, preparation of base fiber

[0037] Add ethylene-vinyl alcohol copolymer (Japan Kuraray Chemical Group) into the isopropanol-water solution, heat and reflux in a water bath at 70°C, and stir until the ethylene-vinyl alcohol copolymer is completely dissolved to obtain a substrate solution. Use the substrate solution The electrospinning instrument carries out electrospinning, and the substrate fiber is prepared; wherein the volume ratio of isopropanol and water in the isopropanol-water solution is 7:3; the ratio of ethylene-vinyl alcohol copolymer to the isopropanol-water solution is 5g: 100mL; the conditions of the electrospinning are as follows: voltage 13kV, solution flow rate 5mL / h, the distance between the nozzle of the electrospinning apparatus and the receiver is 15cm, and the material after electrospinning is vacuum-dried at 40°C to obtain base...

Embodiment 2

[0044] A method for preparing functional nanomaterials with antibacterial activity, comprising the following steps:

[0045] S1, preparation of base fiber

[0046] Add ethylene-vinyl alcohol copolymer (Japan Kuraray Chemical Group) into the isopropanol-water solution, heat and reflux in a water bath at 70°C, and stir until the ethylene-vinyl alcohol copolymer is completely dissolved to obtain a substrate solution. Use the substrate solution The electrospinning apparatus carries out electrospinning, and the substrate fiber is prepared; wherein the volume ratio of isopropanol and water in the isopropanol-water solution is 7:3; the ratio of ethylene-vinyl alcohol copolymer to the isopropanol-water solution is 8g: 100mL; the electrospinning conditions are as follows: voltage 15kV, solution flow rate 5mL / h, the distance between the nozzle and the receiving object 15cm, and the electrospun material is vacuum-dried at 40°C to obtain the substrate fiber;

[0047] S2, Surface modifica...

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Abstract

The invention belongs to the technical field of antibacterial materials and particularly relates to a functional nano-material with antibacterial activity and a preparation method thereof. The preparation method comprises substrate fiber preparation, surface modification of substrate fibers, and surface modification of silver-loaded nanofibers. The preparation method utilizes a two-layer coating method comprising preparing a substrate through a simple and easy electrospinning process, depositing a silver film on the surface of the substrate and depositing a copper film on the surface of the silver film. Through use of two elements and two coating films, the antibacterial activity and wear resistance of the material are improved and the service life of the material is prolonged.

Description

technical field [0001] The invention belongs to the technical field of antibacterial materials, and in particular relates to a functional nanometer material with antibacterial activity and a preparation method. Background technique [0002] Antibacterial materials refer to a class of materials that have the function of killing or inhibiting microorganisms. Since the environment contains a variety of pathogenic microorganisms that threaten human health, the development of materials with antimicrobial activity is of great significance to human health. [0003] Nanomaterials with antibacterial function prepared by combining antibacterial agents and nanofibers by physical or chemical methods have become a hot spot in the research and development of nanomaterials in recent years. Among them, the combination of antibacterial agents and nanofibers is not only conducive to the transmission, release and absorption of antibacterial agents, but also facilitates the penetration of air ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/00A01N59/20A01N25/10A01P1/00
CPCA01N25/10A01N59/00A01N59/20
Inventor 杜玲枝赵亚奇王现丽郭雯静冯巧李山鹰
Owner HENAN UNIV OF URBAN CONSTR