Dopamine-nanosilver composite coating and preparation method thereof

A technology of composite coating and dopamine, which is applied in the direction of coating, metal material coating process, superimposed layer plating, etc., can solve problems such as failure of implanted materials

Inactive Publication Date: 2012-10-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, in implant surgery, bacterial infection is also another important reason for the failure of implant materials.

Method used

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  • Dopamine-nanosilver composite coating and preparation method thereof
  • Dopamine-nanosilver composite coating and preparation method thereof
  • Dopamine-nanosilver composite coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Nano-silver antibacterial coating is prepared with pure titanium as the substrate, and nano-silver particles are prepared by using the chelating and reducing properties of dopamine. The said pure titanium as the substrate is a pure titanium plate with a size of 10*10*6mm. The Ti sheet is cleaned with deionized water, and dried with absolute ethanol for 5 minutes before being used.

[0025] Said nano-silver particles are prepared by dopamine reduction method, the Ti sheet is placed in the dopamine Tris solution for 24 hours, and then placed in silver nitrate (AgNO 3 ) solution by light reaction, the sample was taken out and ultrasonically cleaned with absolute ethanol to obtain evenly distributed nano-silver particles on the Ti surface.

[0026] The process parameters for preparing nano-silver are:

[0027] Tris concentration: 0.3mg / ml

[0028] Dopamine concentration: 0.1mg / ml

[0029] Silver nitrate solution concentration: 0.01mol / L

[0030] Lighting time: 10min

Embodiment 2

[0032] Nano-silver antibacterial coating is prepared with pure titanium as the substrate, and nano-silver particles are prepared by using the chelating and reducing properties of dopamine. The said pure titanium as the substrate is a pure titanium plate with a size of 10*10*6mm. The Ti sheet is cleaned with deionized water, and dried with absolute ethanol for 5 minutes before being used.

[0033] Said nano-silver particles are prepared by dopamine reduction method, the Ti sheet is placed in the dopamine Tris solution for 24 hours, and then placed in silver nitrate (AgNO 3 ) solution by light reaction, the sample was taken out and ultrasonically cleaned with absolute ethanol to obtain evenly distributed nano-silver particles on the Ti surface.

[0034] The process parameters for preparing nano-silver are:

[0035] Tris concentration: 0.3mg / ml

[0036] Dopamine concentration: 0.2mg / ml

[0037] Silver nitrate solution concentration: 0.01mol / L

[0038] Lighting time: 10min

Embodiment 3

[0040] Nano-silver antibacterial coating is prepared with pure titanium as the substrate, and nano-silver particles are prepared by using the chelating and reducing properties of dopamine. The said pure titanium as the substrate is a pure titanium plate with a size of 10*10*6mm. The Ti sheet is cleaned with deionized water, and dried with absolute ethanol for 5 minutes before being used.

[0041] Said nano-silver particles are prepared by dopamine reduction method, the Ti sheet is placed in the dopamine Tris solution for 24 hours, and then placed in silver nitrate (AgNO 3 ) solution by light reaction, the sample was taken out and ultrasonically cleaned with absolute ethanol to obtain evenly distributed nano-silver particles on the Ti surface.

[0042] The process parameters for preparing nano-silver are:

[0043] Tris concentration: 0.3mg / ml

[0044] Dopamine concentration: 0.3mg / ml

[0045] Silver nitrate solution concentration: 0.01mol / L

[0046] Lighting time: 10min

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Abstract

The invention discloses a dopamine-nanosilver composite coating and a preparation method thereof. Firstly, pure titanium or a titanium alloy with titanium dioxide nanotube arrays grown on the surface of the titanium alloy is put in a dopamine buffer solution, then the pure titanium loaded with the dopamine or the titanium alloy with the titanium dioxide nanotube arrays grown on the surface of the titanium alloy is put in a silver nitrate solution, and nanosilver particles are obtained by photoreduction. According to the dopamine-nanosilver composite coating and the preparation method thereof, the chelating property of the dopamine and metal ions and the reducibility in an auto polymerization process are utilized, and the antibacterial performance of material is improved by preparing the nanosilver coating on the surface of the titanium alloy, which has important application value and guiding significance for developing novel functional metal implant material.

Description

technical field [0001] The invention relates to the field of surface modification of metal materials, and more specifically relates to the composite of metal titanium (Ti) and titanium alloy surface with metal silver and a preparation method thereof. Background technique [0002] As we all know, silver (Ag) has been widely used in antibacterial materials since ancient times. Nano-silver has excellent antibacterial properties, and the specific surface area of ​​nano-silver particles is large. + )related. Titanium (Ti) and titanium alloys have become the most widely used tissue repair and replacement materials due to their excellent physical and chemical properties and good biocompatibility. Treatment, such as growing titanium dioxide (TiO 2 ) nanotube films to enhance their biological activity. At the same time, in implant surgery, bacterial infection is also another important reason for the failure of implant materials. Contents of the invention [0003] The purpose of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00A61L27/28
Inventor 李朝阳梁砚琴杨贤金原续波崔振铎
Owner TIANJIN UNIV
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