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Preparation method of hydroxyapatite/polylactic acid composite material

A technology of hydroxyapatite and composite materials, which is applied in the field of preparation of hydroxyapatite/polylactic acid composite materials, can solve the problems of insufficient mechanical properties, poor fatigue resistance, and small flexural modulus of hydroxyapatite, and achieve Short cycle time, excellent performance, and the effect of increasing dispersion

Inactive Publication Date: 2013-05-08
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the lack of mechanical properties of hydroxyapatite, such as: small flexural modulus, low tensile modulus, poor fatigue resistance, poor plasticity, etc., limits its application in many fields

Method used

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  • Preparation method of hydroxyapatite/polylactic acid composite material
  • Preparation method of hydroxyapatite/polylactic acid composite material
  • Preparation method of hydroxyapatite/polylactic acid composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First, solution configuration, 14 g of calcium nitrate tetrahydrate, 9 g of dipotassium hydrogen phosphate trihydrate, and 4 g of sodium hydroxide were respectively dissolved in 10 ml of primary water to prepare solutions for use. Take 10 ml of dipotassium hydrogen phosphate solution and add it to a 50 ml beaker, then add 3 ml of sodium hydroxide solution into the beaker, mix well and seal it for later use. Add 50 g of polylactic acid, 25 g of dioctyl sodium sulfosuccinate and 5 g of n-propanol to 500 ml of dichloromethane to form a polylactic acid solution, and seal it for later use.

[0020] Secondly, the preparation of calcium nitrate emulsion (referred to as emulsion 1) and the mixed emulsion of dipotassium hydrogen phosphate and sodium hydroxide (referred to as emulsion 2), and the process of preparing hydroxyapatite. Take 6.65 ml of calcium nitrate solution and add it to 75 ml of the previously prepared polylactic acid solution at a uniform rate, and mix evenly to...

Embodiment 2

[0024] First, solution configuration, 14 g of calcium nitrate tetrahydrate, 9 g of dipotassium hydrogen phosphate trihydrate, and 4 g of sodium hydroxide were respectively dissolved in 10 ml of primary water to prepare solutions for use. Take 10 ml of dipotassium hydrogen phosphate solution and add it to a 50 ml beaker, then add 3 ml of sodium hydroxide solution into the beaker, mix well and seal it for later use. Take 100 g of polylactic acid, 20 g of Tween 80 and 1 g of n-butanol and add them to 1000 ml of chloroform respectively to make a polylactic acid solution, and seal it for later use.

[0025] Secondly, the preparation of calcium nitrate emulsion (referred to as emulsion 1) and the mixed emulsion of dipotassium hydrogen phosphate and sodium hydroxide (referred to as emulsion 2), and the process of preparing hydroxyapatite. Take 6.65 ml of calcium nitrate solution and add it to 75 ml of the previously prepared polylactic acid solution at a uniform rate, and mix evenly ...

Embodiment 3

[0028] First, solution configuration, 14 g of calcium nitrate tetrahydrate, 9 g of dipotassium hydrogen phosphate trihydrate, and 4 g of sodium hydroxide were respectively dissolved in 10 ml of primary water to prepare solutions for use. Take 10 ml of dipotassium hydrogen phosphate solution and add it to a 50 ml beaker, then add 3 ml of sodium hydroxide solution into the beaker, mix well and seal it for later use. Take 55.2 g of polylactic acid, 10.6 g of sorbitan monostearate and 1 g of n-heptanol and add them to 552 ml of tetrahydrofuran respectively to make a polylactic acid solution, seal it for later use.

[0029] Secondly, the preparation of calcium nitrate emulsion (referred to as emulsion 1) and the mixed emulsion of dipotassium hydrogen phosphate and sodium hydroxide (referred to as emulsion 2), and the process of preparing hydroxyapatite. Take 6.65 ml of calcium nitrate solution and add it to 75 ml of the previously prepared polylactic acid solution at a uniform rate...

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Abstract

The invention discloses a preparation method of a hydroxyapatite / polylactic acid composite material. The technical key point of the invention is that the preparation method of the hydroxyapatite / polylactic acid composite material is characterized by comprising the following steps of: (1) dissolving polylactic acid, a surfactant and a cosurfactant into an organic liquor to prepare an oil phase liquor of polylactic acid; (2) respectively adding a calcium ion liquid and a phosphate anion liquid to the oil phase liquor prepared by the step (1) to prepare a calcium ion emulsion and a phosphate anion emulsion; (3) mixing the calcium ion emulsion and the phosphate anion emulsion to react to form a mixed emulsion of hydroxyapatite / polylactic acid; and (4) volatilizing the organic solvent in the mixed emulsion and removing the surfactant and the cosurfactant to obtain the hydroxyapatite / polylactic acid composite material. The preparation method provided by the invention is characterized in that the composite material is prepared by an emulsion mixing method, and the composite material prepared can be selectively adjusted in proportion to meet different demands.

Description

technical field [0001] The invention relates to a preparation method of a composite material, in particular to a preparation method of a hydroxyapatite / polylactic acid composite material. Background technique [0002] Polylactic acid is a new type of polymer material. Due to its advantages of light weight, strong plasticity and good fatigue resistance, it has broad market prospects, such as extrusion, injection molding, automobiles, biomedicine and other fields. . However, there are many deficiencies in the mechanical properties of polylactic acid, such as: small compressive modulus, low softening point, long degradation time, etc. These deficiencies limit its application in many aspects. So how to improve the performance of polylactic acid has become a hot spot and difficulty in current research. [0003] Hydroxyapatite is a high-strength mineralized substance. It has good bioabsorbability, good compression resistance, high temperature resistance, and no stimulation to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K3/32
Inventor 杨林刘涛崔倩张晓婷严辉影王魁
Owner HENAN NORMAL UNIV
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