Modification method for improving corrosion resistance and surface functionalization of biomedical magnesium-based metal material
A surface functionalization, magnesium-based metal technology, applied in the field of biomedical engineering functional materials, can solve problems such as excessive degradation, achieve high research and application value, hinder electron transfer, and excellent corrosion resistance
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[0029] Example 1
[0030] A modification method for improving the corrosion resistance and surface functionalization of biomedical magnesium-based metal materials is obtained by the following steps:
[0031] A. Polish, clean and dry the pure magnesium material that needs to be modified;
[0032] B. Place the sample obtained in step A in a buffer system with pH=7, and then add epigallocatechin gallate EGCG at a concentration of 0.5 mg / ml to the system, and react for 1 hour at 10°C;
[0033] C. For the sample obtained in step B, immerse in deionized water, and ultrasonically clean 3 times, each time for 5 minutes, and then in N 2 Under dry conditions, the target material is obtained.
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[0034] Example 2
[0035] A modification method for improving the corrosion resistance and surface functionalization of biomedical magnesium-based metal materials is obtained by the following steps:
[0036] A. Polish, clean and dry the magnesium-zinc-manganese alloy material that needs to be modified;
[0037] B. Place the sample obtained in step A in a buffer system with pH=12, and then add epigallocatechin gallate (EGCG) at a concentration of 10mg / ml and selenocystamine at a concentration of 10mg / ml to the system. React for 6h at 30°C;
[0038] C. For the sample obtained in step B, immerse in deionized water, and ultrasonically clean 3 times, each time for 5 minutes, and then in N 2 Under dry conditions, the target material is obtained.
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[0039] Example 3
[0040] A modification method for improving the corrosion resistance and surface functionalization of biomedical magnesium-based metal materials is obtained by the following steps:
[0041] A. Polish, clean and dry the WE43 magnesium alloy that needs to be modified;
[0042] B. Place the sample obtained in step A in a Tris-buffer buffer system with pH=7, and then add 0.1 mg / ml tannic acid with ortho-phenolic hydroxyl structure to the system, and add 1 mg / ml hexane Diamine, react for 1h at 10°C;
[0043] C. For the sample obtained in step B, immerse in deionized water, and ultrasonically clean 3 times, each time for 5 minutes, and then in N 2 Under dry conditions, the target material is obtained.
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