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Functionalized graphene modified porous polyether-ether-ketone material and preparation method thereof

A technology of polyether ether ketone and fossils, applied in medical science, prosthesis, etc., can solve problems such as difficult porous structures

Pending Publication Date: 2019-11-01
王征
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Problems solved by technology

However, due to the good chemical resistance of the PEEK surface, it is still difficult to form a porous structure on its surface

Method used

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  • Functionalized graphene modified porous polyether-ether-ketone material and preparation method thereof
  • Functionalized graphene modified porous polyether-ether-ketone material and preparation method thereof

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Embodiment Construction

[0021] The present invention is further described by examples below. This example is only used to further illustrate the present invention. Belong to the protection scope of the present invention.

[0022] In the present invention, the preparation of functionalized graphene-modified porous polyetheretherketone comprises the following steps:

[0023] Put 100g of PEEK, sodium chloride and sodium phosphate at a weight ratio of 1:0.4:0.6 in a drying oven at 100°C for drying, put the dried sodium chloride and PEEK particles in a twin-screw extruder, set the working temperature to 340 -380°C. First run at 100-120 rpm for 40-60 minutes, and then at 180-250 rpm for 20-30 minutes. Wash the above melt-processed mixture in distilled water at 100°C to remove soluble salt fillers

[0024] Get 10g (100 order) natural flake graphite and 500ml mass concentration be 98% sulfuric acid after mixing uniformly, add 10.0g potassium nitrate, add 60g potassium permanganate rapidly in the water bat...

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Abstract

The invention relates to functionalized graphene modified porous polyether-ether-ketone (PEEK) and a preparation method thereof. The porous PEEK is subjected to surface modification through the graphene oxide, so that the biological inertness of the PEEK is enhanced, and the bone conductivity and the antibacterial activity are improved. The method mainly comprises the following three steps: (1) preparing porous PEEK with soluble salt or soluble acid salt as filling particles; (2) preparing high-dispersion graphene oxide with controllable concentration throguh cross-flow membrane filtration; and (3) assembling the functionalized graphene on the porous PEEK. Through implantation of graphene oxide, a large number of active sites can be provided; the interaction with protein is improved through hydrophobic and electrostatic effects, so that the osteogenesis difference of cells is favorably enhanced.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials and the field of biomedical materials. Background technique [0002] Traditional medical femoral nails are made of metal materials such as stainless steel, Co-Cr alloy or titanium alloy, which have high strength and modulus. However, the compatibility of these materials with bones is not easy to cause rejection, and the modulus of metal materials (100-200GPa) is much higher than that of human bones (12-20GPa). Cause long-term stress shielding and stress stimulation, resulting in resorption of bone tissue around the implant and loosening of the implant. Therefore, it is an urgent problem to seek bioimplantation materials with low elastic modulus and high bioactivity. [0003] Polyetheretherketone (PEEK) is a semi-crystalline thermoplastic polymer with excellent stability and mechanical properties, and is non-toxic and harmless to the human body. The elastic modulus of PEEK is...

Claims

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Application Information

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IPC IPC(8): C08J9/40C08J9/36C08J9/26A61L27/56A61L27/44C08L61/16
CPCA61L27/443A61L27/56C08J9/26C08J9/36C08J9/40C08J2201/0446C08J2361/16C08K3/042C08L61/16
Inventor 王征暴宁钟许小波沈丽明丁玉婕
Owner 王征
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