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A surface antibacterial composite coating for a titanium metal and a preparing method thereof

A surface antibacterial and composite coating technology, which is applied in the field of materials science and nanomaterials, can solve the problem of single function, and achieve the effects of promoting bone formation, improving biocompatibility, and improving antibacterial performance

Inactive Publication Date: 2017-06-20
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, researchers have gradually developed methods of surface modification on orthopedic implants to achieve antibacterial purposes. However, some traditional inorganic antibacterial agents have a relatively simple effect on bacteria. How to realize the antibacterial effect of inorganic antibacterial agents Ag and ZnO Joint antibacterial and improving the performance of antibacterial agents are the directions to be studied

Method used

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  • A surface antibacterial composite coating for a titanium metal and a preparing method thereof
  • A surface antibacterial composite coating for a titanium metal and a preparing method thereof
  • A surface antibacterial composite coating for a titanium metal and a preparing method thereof

Examples

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Effect test

Embodiment 1

[0031] A method for preparing a polylactic acid / nanometer silver / zinc oxide nanorod long-acting antibacterial composite coating on the surface of a titanium implant, characterized in that it comprises the following steps:

[0032] step one,

[0033] A titanium metal disc with a diameter of 6 mm and a thickness of 2.5 mm was polished step by step with sandpaper, then ultrasonically cleaned in acetone, deionized water, and absolute ethanol in sequence, and dried for use.

[0034] step two,

[0035] Mix and dissolve 4.1 g of zinc acetate and 1.14 g of ethanolamine in 50 mL of absolute ethanol, stir at room temperature for 4 hours to obtain a mixed solution, and then spin-coat 30 μl of the mixed solution onto the surface of the polished titanium sheet, and the spin-coater is controlled at 600rpm for 15 seconds, 5000rpm for 30 seconds, this process was repeated five times; put the spin-coated titanium sheet in a muffle furnace for 60 minutes at 500°C, and cool at room temperature;...

Embodiment 2

[0041] A method for preparing a polylactic acid / nanometer silver / zinc oxide nanorod long-acting antibacterial composite coating on the surface of a titanium implant, characterized in that it comprises the following steps:

[0042] step one,

[0043] A titanium metal disc with a diameter of 6 mm and a thickness of 2.5 mm was polished step by step with sandpaper, then ultrasonically cleaned in acetone, deionized water, and absolute ethanol in sequence, and dried for use.

[0044] step two,

[0045]Mix and dissolve 3.8 g of zinc acetate and 0.9 g of ethanolamine in 50 mL of absolute ethanol, stir at room temperature for 4 hours to obtain a mixed solution, and then spin-coat 30 μl of the mixed solution onto the surface of the polished titanium sheet, and the spin coater is controlled at 600rpm for 15 seconds, 5000rpm for 30 seconds, repeat this process five times; put the spin-coated titanium sheet in a muffle furnace for 60 minutes at 500°C, and cool at room temperature; g hexa...

Embodiment 3

[0051] A method for preparing a polylactic acid / nanometer silver / zinc oxide nanorod long-acting antibacterial composite coating on the surface of a titanium implant, characterized in that it comprises the following steps:

[0052] step one,

[0053] A titanium metal disc with a diameter of 6 mm and a thickness of 2.5 mm was polished step by step with sandpaper, then ultrasonically cleaned in acetone, deionized water, and absolute ethanol in sequence, and dried for use.

[0054] step two,

[0055] Mix and dissolve 4.0 g of zinc acetate and 1.0 g of ethanolamine in 50 mL of absolute ethanol, stir at room temperature for 4 hours to obtain a mixed solution, and then spin-coat 30 μl of the mixed solution onto the surface of the polished titanium sheet, and the spin-coater is controlled at 600rpm for 15 seconds, 5000rpm for 30 seconds, this process was repeated five times; the spin-coated titanium sheet was put into a muffle furnace for 60 minutes at 500°C, and cooled at room tempe...

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Abstract

A surface antibacterial composite coating for a titanium metal and a preparing method thereof are disclosed. The composite coating includes zinc oxide nanorods grew on the surface of the titanium metal and a polylactic acid-nanometer silver mixed coating attached to the zinc oxide nanorods. The method includes growing the zinc oxide nanorods on the surface of the titanium metal by utilizing a hydrothermal reaction after the titanium metal is treated, then mixing polylactic acid and nanometer silver in a solvent, then coating the zinc oxide nanorods grew on the surface of the titanium metal with the mixture, and drying the product to obtain the composite coating. In the composite coating, synergistic effects of zinc oxide and silver greatly improve antibacterial performance of the composite coating, and coverage with the polylactic acid delays release of zinc and silver ions so as to prolong the antibacterial period. The method is simple, feasible, low in resource consumption and free of influences on the environment.

Description

technical field [0001] The invention relates to the field of material science and nanometer material technology, in particular to an antibacterial composite coating on the surface of titanium metal and a preparation method thereof. Background technique [0002] Biomedical material is an important branch of material science; it is a new type of carrier material with high technical content and high economic value for diagnosis, treatment or replacement of human tissue, organ or enhancement of its function; it is a developing field in material science and technology. In the new field, biomedical materials have made and will soon make outstanding contributions to exploring the mysteries of human life and ensuring human health and longevity. Among biomedical metal materials, titanium and its alloys are widely used in artificial joints (hip, knee, shoulder, ankle, elbow, wrist, knuckles, etc.), orthopedic trauma products (intramedullary nails, plates, screws, etc.) etc.), spinal ...

Claims

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Application Information

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IPC IPC(8): A61L27/06A61L27/34A61L27/30A61L27/54A61L27/50
CPCA61L27/06A61L27/306A61L27/34A61L27/50A61L27/54A61L2300/102A61L2300/104A61L2300/404A61L2300/606A61L2420/02A61L2420/06A61L2430/02C08L67/04
Inventor 吴水林向一鸣刘想梅李浚
Owner HUBEI UNIV
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