Method for quickly coating polysaccharide polymer on metal material surface

A polysaccharide polymer and metal material technology, applied in electrolytic organic material coating, etc., can solve the problems of easy peeling off, unfavorable application modification, etc., and achieve the effect of uniform coating, shortening coating time and strong adhesion

Inactive Publication Date: 2013-08-21
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Generally, a large amount of self-polymer with loose structure will be adsorbed on the surface of th

Method used

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  • Method for quickly coating polysaccharide polymer on metal material surface
  • Method for quickly coating polysaccharide polymer on metal material surface

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Experimental program
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Effect test

Embodiment 1

[0023] Such as figure 1 As shown, a method for quickly coating polysaccharide polymers on the surface of metal materials, the water-soluble dopamine derivatives modified polysaccharide polymers are used to electrochemically modify the metal surface in an electrolytic cell. The specific process is:

[0024] 1) Weigh 100mg of sodium hyaluronate at room temperature and dissolve in 10ml of 2-(N-morpholino)ethanesulfonic acid buffer solution with pH=5.5;

[0025] 2) Then add 200mg 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 100mg N-hydroxysuccinimide, mix the three and stir at room temperature for 1~2h;

[0026] 3) Add 100mg of dopamine after 1~2h, water is the solvent, dopamine is the modification medium, the concentration is 10mg / ml, and the reaction time is 7h;

[0027] 4) The reaction product was extracted with acetone, and the dopamine-hyaluronic acid polymer was freeze-dried;

[0028] 5) Dissolve an appropriate amount of dopamine-hyaluronic acid polymer ...

Embodiment 2

[0031] 1) Weigh 200mg of sodium hyaluronate at room temperature and dissolve in 20ml of 2-(N-morpholino)ethanesulfonic acid buffer solution with pH=5.5;

[0032] 2) Then add 400mg 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 300mg N-hydroxysuccinimide, mix the three and stir at room temperature for 1~2h;

[0033] 3) Add 300mg of dopamine after 1~2h, water is the solvent, dopamine is the modification medium, the concentration is 15mg / ml, and the reaction time is 8h;

[0034] 4) The reaction product was extracted with acetone, and the dopamine-hyaluronic acid polymer was freeze-dried;

[0035] 5) Dissolve an appropriate amount of dopamine-hyaluronic acid polymer in 40ml of PBS buffer solution with pH=8.0, adopt a three-electrode system, use the 316L stainless steel to be modified as the working electrode, and the platinum column electrode as the counter electrode. The mercury electrode is the reference electrode, and the electrochemical reaction occurs at the...

Embodiment 3

[0038] 1) Weigh 300mg of sodium hyaluronate at room temperature and dissolve in 30ml of 2-(N-morpholino)ethanesulfonic acid buffer solution with pH=5.5;

[0039] 2) Then add 500mg 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 400mg N-hydroxysuccinimide, mix the three and stir at room temperature for 1~2h;

[0040] 3) Add 150mg of dopamine after 1~2h, water is the solvent, dopamine is the modification medium, the concentration is 5mg / ml, and the reaction time is 8h. ;

[0041] 4) The reaction product was extracted with acetone, and the dopamine-hyaluronic acid polymer was freeze-dried;

[0042] 5) Dissolve an appropriate amount of dopamine-hyaluronic acid polymer in 50ml of PBS buffer solution with pH = 8.0, adopt a three-electrode system, use the 316L stainless steel to be modified as the working electrode, and the platinum column electrode as the counter electrode. The mercury electrode is the reference electrode, and the electrochemical reaction occurs at...

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Abstract

The invention aims to provide a method for quickly coating a polysaccharide polymer on a metal material surface. The method comprises the following steps of: preparing a dopamine derivative modified polysaccharide polymer; soaking a material to be modified into a prepared alkaline buffer solution; and adopting a three-electrode system to carry out the electrochemical reaction of anodes in an electrolytic tank, and electrochemically modifying the material through a medium in the solution so as to obtain a metal material with excellent biocompatibility. Compared with the defects such as long modification time, poor coating adhesive force and uneven surface of a conventional coating modification technology, the method can be used for greatly shortening the coating time, and an obtained coating is uniform and dense and has strong adhesive force.

Description

technical field [0001] The invention relates to a method for quickly coating polysaccharide polymers on the surface of metal materials. Background technique [0002] The electrochemical method uses the electrode potential as the initiation and driving force of the polymerization reaction, so that the monomer is directly polymerized on the electrode surface to form a film. The electrochemical method is relatively simple, and it has some unique advantages: 1) Polymerization and doping are carried out simultaneously; 2) A self-supporting conductive film can be formed on the electrode in one step; 3) The oxidation of the film can be conveniently controlled separately by changing the polymerization potential. Reduced state; 4) The thickness of the film can be controlled by electricity; 5) The product does not require a separation step; 6) The process of forming a polymer on the electrode or the generated polymer can be easily studied by electrochemical or spectroscopic methods, w...

Claims

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Application Information

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IPC IPC(8): C25D9/02
Inventor 阎玉陈斌陈捷孟庆阳彭光佳杨伟杨黎明金万芹
Owner SHANGHAI UNIV
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