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Process for preparing nano-class hydroxyphosphorite/alumina bioceramics

A technology of nano-hydroxyapatite and composite bioceramics, which is applied in the fields of phosphorus compounds, chemical instruments and methods, and inorganic chemistry. The effect of simple method

Inactive Publication Date: 2003-02-19
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure hydroxyapatite or alumina has its own disadvantages as an alternative bioinorganic material
At present, the synthesis of hydroxyapatite mostly stays in the synthesis of its nano-scale powder, which has various shapes, such as spherical, rod-shaped, linear, etc., and its shape and scale are difficult to control. In order to obtain a better shape , organic dispersants are widely used, and high-temperature burning is required, and the preparation conditions are relatively complicated
Although there are literature reports with relatively simple morphology, hydroxyapatite does not have the same orientation, which greatly limits its application in alternative bio-inorganic materials and natural bone repair.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 0.001mol of Ca(OH) 2 Place in a beaker containing 1000ml of water, heat in a water bath at 20°C, stir vigorously, and at the same time add a stoichiometric ratio of 0.001mol / L phosphoric acid solution dropwise, when the phosphoric acid solution is added dropwise, continue heating in a water bath, stir vigorously for 1min, and then Aging at room temperature, filtering the obtained product, and vacuum drying to obtain a white powdery solid, which is the nano-hydroxyapatite precursor;

[0022] After immersing the aluminum sheet in 0.5mol / L sodium hydroxide solution for 10 minutes, the aluminum sheet is the anode and the platinum sheet is the counter electrode, the two are parallel and opposite, and the immersed area is about 1×1cm 2 , the electrolyte is a perchloric acid / ethanol polishing solution with a volume ratio of 1:4, apply a voltage of 10V to oxidize for several minutes until the surface is bright; after washing, immerse it in 0.5mol / L sodium hydroxide solution for...

Embodiment 2

[0026] 0.01mol of Ca(OH) 2 Place in a beaker containing 1000ml of water, heat in a water bath at 60°C, stir vigorously, and at the same time add a stoichiometric ratio of 0.5mol / L phosphoric acid solution dropwise, when the phosphoric acid solution is added dropwise, continue heating in a water bath, stir vigorously for 60min, Aging at room temperature, the obtained product was filtered, and after vacuum drying, a white powdery solid was obtained, which was the nano-hydroxyapatite precursor;

[0027] After immersing the aluminum sheet in 0.5mol / L sodium hydroxide solution for 10 minutes, the aluminum sheet is the anode and the platinum sheet is the counter electrode, the two are parallel and opposite, and the immersed area is about 1×1cm 2 , the electrolyte is a perchloric acid / ethanol polishing solution with a volume ratio of 1:4, apply a voltage of 10V to oxidize for several minutes until the surface is bright; after washing, immerse it in 0.5mol / L sodium hydroxide solution ...

Embodiment 3

[0031] 0.1mol of Ca(OH) 2 Place in a beaker containing 1000ml of water, heat in a water bath at 80°C, stir vigorously, and at the same time add dropwise a stoichiometric ratio of 1mol / L phosphoric acid solution, when the phosphoric acid solution is added dropwise, continue heating in a water bath, stir vigorously for 90min, and then Under aging, the obtained product was filtered, and after vacuum drying, a white powdery solid was obtained, which was the nano-hydroxyapatite precursor;

[0032] After immersing the aluminum sheet in 0.5mol / L sodium hydroxide solution for 10 minutes, the aluminum sheet is the anode and the platinum sheet is the counter electrode, the two are parallel and opposite, and the immersed area is about 1×1cm 2 , the electrolyte is a perchloric acid / ethanol polishing solution with a volume ratio of 1:4, apply a voltage of 10V to oxidize for several minutes until the surface is bright; after washing, immerse it in 0.5mol / L sodium hydroxide solution for 10 m...

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Abstract

A nano hydroxyphosphorite / alumina bioceramics is prepared through physically depositing hydroxyphosphorite, preparing precursor by template technique, stirring while heating to obtain nano-class precursor by calcium hydroxide suspension and phosphoric acid, ultrasonic treating to obtain suspension, and immersing alumina in it to obtain product.

Description

technical field [0001] The invention relates to a preparation method of nano-hydroxyapatite / alumina composite bioceramics Background technique [0002] As reported by Service RF in Science, Volume 294, pp. 1635-1637, 2001, natural bone is an inorganic-bioorganic composite, mainly containing collagen protein and hydroxyapatite. Collagen spontaneously forms fibrils, small hydroxyapatite crystals, that line the collagen helices. The size and orientation of the crystals are constrained by the collagen template, the crystals have the same orientation, and have the same orientation as the collagen template, and the precise structure between collagen and hydroxyapatite strictly determines the stress and strength of natural bone. Therefore, the use of template technology to synthesize hydroxyapatite with consistent orientation will be very meaningful for the study of synthesizing alternative bio-inorganic materials, studying the mineralization process of bio-inorganic materials, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/12C01B25/32C04B41/85
Inventor 李景虹张袁健周立恒薛乃存李迪
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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