| 摘要: |
| 等离子体氧化方法能够在纯钛种植体表面产生梯度变化的 TiO2- x层,使其显著提高表面的亲水性和生物相容性,但是在空气中长期存放由于吸附的污染物,种植体表面很容易失去这些特性。 因此,需要一些存储方法来防止表面失效。 利用辉光等离子体放电技术在喷砂酸蚀(SLA)的纯钛表面进行等离子体氧化,然后对氧化后的样品进行 NaOH 溶液存储。 分析了 NaOH 溶液存储前后的表面特性,观察了 NaOH 溶液存储不同时间后表面亲水性的时效性,以及比较了 NaOH 溶液和生理盐水长期存储对表面亲水性的影响。 结果表明,NaOH 溶液处理后等离子体氧化表面形貌和化学成分无太大变化;NaOH 溶液存储时间对于亲水性的时效性无影响;NaOH 溶液是否残留不影响亲水性;将氧化后的样品直接储存在 NaOH 溶液或生理盐水中,可以长期保持表面的超亲水性。 对于纯钛表面超亲水性的长期稳定性,NaOH 溶液优于生理盐水。 |
| 关键词: 等离子体氧化 NaOH 溶液存储 TiO2- x 超亲水性 种植体 |
| DOI：10.11933/j.issn.1007-9289.20200824001 |
| 分类号:TG146;O484;R783 |
| 文章编号:1007-9289(2020)03-0071-07 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(5175096)；中央高校基本科研业务费(N2003009) |
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| Effects of NaOH Solution Storage on Long-term Stability of Superhydrophilic TiO2- x Layer on Surface of Pure Titanium |
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Sun Fei1, Cheng Wei1, Lin Zeng1,2
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1.School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819 , China;2.Liaoning Key La- boratory of Implantable Devices and Interface Science, Northeastern University, Shenyang 110819 , China
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| Abstract: |
| The plasma oxidation method can produce a gradient TiO2- x layer on the surface of pure titanium implants, which significantly improves the hydrophilicity and biocompatibility of the surface. However, due to the adsorption of pollutants in the air for a long time, the surface of the implants easily loses these characteristics. Therefore, some storage methods are needed to prevent surface failure. In this study, the glow plasma discharge technology was used to perform plasma oxidation on the surface of pure titanium by sandblasting acid-etching (SLA), and then the oxidized samples were stored in NaOH solution. The surface characteristics before and after storage of NaOH solution were analyzed. The timeliness of hydrophilicity after storing NaOH solu- tion in different time period was observed, and the effects of long-term storage of NaOH solution and normal saline on surface hy- drophilicity were compared. The results show that the plasma oxidation surface morphology and chemical composition after NaOH solution treatment do not change much; The storage time of NaOH solution has no effect on the timeliness of hydrophilicity;Whether the NaOH solution remains do not affect the hydrophilicity; The oxidized samples are directly stored in NaOH solution orsaline, which can maintain the superhydrophilic surface for a long time. NaOH solution is better than normal saline as for the long-term stability of superhydrophilicity on pure titanium surface. |
| Key words: plasma oxidation NaOH solution TiO2- x superhydrophilicity dental implant |
