Synthesis method of graphene-hydroxyapatite composite material

Abstract

The invention relates to the technical field of inorganic nonmetallic materials, in particular to a synthesis method of graphene-hydroxyapatite composite material. The synthesis method of the graphene-hydroxyapatite composite material comprises the steps of preparing tris (hydroxymethyl) aminomethane buffer solution, preparing dopamine solution, reducing and modifying graphene oxide, preparing simulated body fluid and mineralizing hydroxyapatite. According to the synthesis method, the graphene-hydroxyapatite composite material is synthesized in the environment of simulating human body fluid; the obtained composite material has good stability and biocompatibility, and can be applied to the field of biological medicines.

Description

technical field [0001] The invention relates to the technical field of inorganic non-metallic materials, in particular to a synthesis method of a graphene-hydroxyapatite composite material. Background technique [0002] The development of biocompatible materials has become one of the important research directions in the field of new materials today. Hydroxyapatite (HA) is the main component of biological hard tissues. It has good biocompatibility and is widely used in bone Repair and bone shaping. However, synthetic hydroxyapatite has disadvantages such as low swelling strength and poor fracture toughness, which limit its role in bone repair. In order to solve this problem, polymers, silicon materials, titanium alloys and many other materials are used to compound with hydroxyapatite to improve its mechanical properties, but there is an added second phase, which cannot effectively realize the mechanical capabilities of composite biomaterials The purpose of both improving an...

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Problems solved by technology

[0004] The patent of CN102569749A discloses a graphene-hydroxyapatite nanocomposite material and its preparation method. The graphene-hydroxyapatite nanocomposite material is prepared by amino acid hydrothermal method. The preparation conditions of this invention patent are harsh and require high equipment , the energy consumption is also high

CN104415399A discloses a method for preparing hydroxyapatite-graphene nanocomposite powder by a wet chemical method, adopting ammonia water to adjust the mixed solution to obtain hydroxyapatite-graphene precursor slurry under alkaline conditions, and then making the precursor slurry After the material is matured, a composite material is formed. Although the preparation conditions of the invention are simple, they are formed under alkaline conditions, and the pH of the body fluid of the human body is about 7.5, so it is difficult to ensure the mechanical properties and biocompatibility of the composite material in the human body.

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