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

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

Experimental program
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Example Embodiment

[0030] Example 1:

[0031] A preparation method of a polylactic acid / nano silver / zinc oxide nanorod long-acting antibacterial composite coating on the surface of a titanium implant is characterized by comprising the following steps:

[0032] step one,

[0033] After the titanium metal discs with a diameter of 6 mm and a thickness of 2.5 mm are polished step by step with sandpaper, they are ultrasonically cleaned in acetone, deionized water, and absolute ethanol in turn, and dried for later use.

[0034] Step two,

[0035] 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 on the surface of the polished titanium sheet. The spin coater is controlled at 600rpm for 15 seconds, 5000rpm for 30 seconds, this process is repeated five times; put the spin-coated titanium sheet in a muffle furnace at 500°C for 60 minutes, and cool at room temperature...

Example Embodiment

[0040] Example 2:

[0041] A preparation method of a polylactic acid / nano silver / zinc oxide nanorod long-acting antibacterial composite coating on the surface of a titanium implant is characterized by comprising the following steps:

[0042] step one,

[0043] After the titanium metal discs with a diameter of 6 mm and a thickness of 2.5 mm are polished step by step with sandpaper, they are ultrasonically cleaned in acetone, deionized water, and absolute ethanol in turn, and dried for later use.

[0044] Step two,

[0045] Mix 3.8g of zinc acetate and 0.9g of ethanolamine in 50mL of absolute ethanol, stir at room temperature for 4h to obtain a mixture, then spin-coat 30μl of the mixture 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 is repeated five times; put the spin-coated titanium sheet into a muffle furnace at 500°C for 60 minutes, and cool at room temperature; add the processed titan...

Example Embodiment

[0050] Example 3:

[0051] A preparation method of a polylactic acid / nano silver / zinc oxide nanorod long-acting antibacterial composite coating on the surface of a titanium implant is characterized by comprising the following steps:

[0052] step one,

[0053] After the titanium metal discs with a diameter of 6 mm and a thickness of 2.5 mm are polished step by step with sandpaper, they are ultrasonically cleaned in acetone, deionized water, and absolute ethanol in turn, and dried for later use.

[0054] Step two,

[0055] 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 on the surface of the polished titanium sheet. The spin coater is controlled at 600rpm for 15 seconds, 5000rpm for 30 seconds, this process is repeated five times; put the spin-coated titanium sheet into a muffle furnace at 500°C for 60 minutes, and cool at room temperatur...

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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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