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Electrochemical method for preparing strontium-doped hydroxyapatite ridge rodlike structure coating on titanium surface

A technology of strontium hydroxyapatite and rod-like structure, which is applied in the field of electrochemical methods, can solve the problems of single coating composition and structure, and achieve the effects of increasing specific surface area, good hydrophilicity, and improved wettability

Inactive Publication Date: 2014-07-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the single composition and structure of the HA coating prepared by the existing electrochemical method, and provide an electrochemical method for preparing a strontium-doped hydroxyapatite ridged rod-shaped coating on the surface of metal titanium.

Method used

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  • Electrochemical method for preparing strontium-doped hydroxyapatite ridge rodlike structure coating on titanium surface
  • Electrochemical method for preparing strontium-doped hydroxyapatite ridge rodlike structure coating on titanium surface
  • Electrochemical method for preparing strontium-doped hydroxyapatite ridge rodlike structure coating on titanium surface

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Experimental program
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Effect test

Embodiment 1

[0020] 1) Preparation containing CaCl 2 The molar concentration is 0.54mmol·L -1 , SrCl 2 The molar concentration is 0.06mmol·L -1 , NH 4 h 2 PO 4 The molar concentration is 0.36 mmol L -1 and NaCl molar concentration of 0.1 mol L -1 low concentration electrolyte, PO 4 3- with (Ca 2+ +Sr 2+ ) with a molar concentration ratio of 0.6:1, the electrolyte was heated to 85°C and then kept at a constant temperature; platinum was used as the anode, metal titanium was used as the cathode electrode, connected to a DC power supply, the control voltage was -3.0V, and the electrodes were immersed in low-concentration electrolytic Electrochemical deposition in liquid for 60min;

[0021] 2) Take out step 1) finish depositing the metal titanium as the cathode, rinse and remove the electrolyte residue on the surface, and place it in the air to dry naturally before use;

[0022] 3) Preparation containing CaCl 2 The molar concentration is 2.16mmol·L -1 , SrCl 2 The molar concentra...

Embodiment 2

[0025] 1) Preparation containing CaCl 2 The molar concentration is 0.81mmol·L -1 , SrCl 2 The molar concentration is 0.09mmol·L -1 , NH 4 h 2 PO 4 The molar concentration is 0.54mmol·L -1 and NaCl molar concentration of 0.1 mol L -1 low concentration electrolyte, PO 4 3- with (Ca 2+ +Sr 2+ ) with a molar concentration ratio of 0.6:1, the electrolyte was heated to 85°C and then kept at a constant temperature; platinum was used as the anode, metal titanium was used as the cathode electrode, connected to a DC power supply, the control voltage was -3.0V, and the electrodes were immersed in low-concentration electrolytic Electrochemical deposition in liquid for 60min;

[0026] 2) Take out step 1) finish depositing the metal titanium as the cathode, rinse and remove the electrolyte residue on the surface, and place it in the air to dry naturally before use;

[0027] 3) Preparation containing CaCl 2 The molar concentration is 4.32mmol L -1 , SrCl 2 The molar concentratio...

Embodiment 3

[0030] 1) Preparation containing CaCl 2 The molar concentration is 1.08mmol·L -1 , SrCl 2 The molar concentration is 0.12mmol·L -1 , NH 4 h 2 PO 4 The molar concentration is 0.72 mmol L -1 and NaCl molar concentration of 0.1 mol L -1 low concentration electrolyte, PO 4 3- with (Ca 2+ +Sr 2+ ) with a molar concentration ratio of 0.6:1, the electrolyte was heated to 85°C and then kept at a constant temperature; platinum was used as the anode, metal titanium was used as the cathode electrode, connected to a DC power supply, the control voltage was -3.0V, and the electrodes were immersed in low-concentration electrolytic Electrochemical deposition in liquid for 60min;

[0031] 2) Take out step 1) finish depositing the metal titanium as the cathode, rinse and remove the electrolyte residue on the surface, and place it in the air to dry naturally before use;

[0032] 3) Preparation containing CaCl 2 The molar concentration is 8.64mmol·L -1 , SrCl 2 The molar concentra...

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Abstract

The invention discloses an electrochemical method for preparing a strontium-doped hydroxyapatite ridge rodlike structure coating on a titanium surface. The method comprises the steps of preparing high and low-concentration electrolyte solutions containing Ca, Sr and P; heating the two electrolyte solutions to a certain temperature and keeping the temperature by using constant-temperature heating equipment; taking a platinum sheet as a positive electrode and pure titanium as a negative electrode base body, and soaking the two electrodes in the electrolyte solutions during depositing; depositing in the high and low-concentration electrolyte solutions for a certain time to finally obtain the strontium-doped hydroxyapatite ridge rodlike structure coating; after the deposition is finished, taking out the base body, cleaning and drying. The strontium-doped hydroxyapatite ridge rodlike structure coating is prepared by adopting the method, the specific surface area of the coating is enlarged, and the coating is relatively good in wetting property; meanwhile, the dissolution characteristic of the coating is changed due to strontium ion doping, and a new direction is opened up for preparation and application of a modified hydroxyapatite bio-coating.

Description

technical field [0001] The invention relates to an electrochemical method for coating strontium-doped hydroxyapatite with a ridged rod structure on the surface of metal titanium, belonging to the field of biomedical materials. Background technique [0002] As a representative bioactive material, hydroxyapatite (HA) is widely used in plastic surgery. It is similar in chemical composition and crystal structure to the inorganic components in human natural bone and other hard tissues, so it can realize osseointegration by spontaneously forming bone-like apatite on the interface in contact with human tissue. Mg exists in the apatite composition of actual human natural bone 2+ ,Sr 2+ and CO 3 2- Anion and cation substitute ions, so its properties are different from those of synthetic HA. In recent years, many studies have attempted to use Sr 2+ Substitution of Ca in synthetic HA 2+ , synthesized strontium-doped HA (SrHA). Experimental studies in vivo and in vitro also con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/08
Inventor 刘茂林王小祥
Owner ZHEJIANG UNIV
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