摘要
目的研究不同浓度盐存储液对纯钛表面碳累积效应的影响。方法采用SiC砂纸逐级打磨、抛光制备光滑纯钛试件,清洗干燥后分别保存于空气、双蒸水、0.45%氯化钠溶液、0.9%氯化钠溶液、10%氯化钠溶液中两周。通过扫描电镜、光学接触角仪、X射线光电子能谱(XPS)比较分析不同存储条件下钛表面的微形貌、接触角、表面能和化学元素组成。结果扫描电镜观察显示,对照组(空气、双蒸水)钛表面相对洁净,三种盐存储液实验组钛表面见散在氯化钠晶体,但各组钛表面的微形貌无明显差异;经盐溶液存储后,钛表面接触角减小,表面能增加,表明亲水性增强;XPS分析显示,与对照组相比,盐存储液实验组钛表面的碳含量显著减少,且存储液浓度越高,碳含量越少。结论盐存储液能减少钛表面的碳累积,保持其亲水性,具有抗老化效应。
Objective To study the effect of saline storage solution with different concentrations on carbon accumulation of pure titanium surface.Methods The pure titanium samples were prepared through grinding and polishing step by step using SiC sandpapers.After cleaning and drying,samples were respectively stored in air,double distilled water,0.45%NaCl,0.9%NaCl and 10%NaCl solutions for two weeks.Scanning electron microscopy(SEM),optical contact angle instrument and X-ray photoelectron spectroscopy(XPS)were used to compare and analyze surface micro-morphology,contact angle,surface energy and chemical element composition of titanium samples under different storage conditions.Results SEM observation showed that the titanium surfaces in the control groups(air,double distilled water)were relatively clean,whereas sodium chloride crystals scattered on the titanium surfaces in three saline storage solution experimental groups.However,no obvious differences in the micro-morphology of titanium surfaces were observed among different groups.After titanium samples were stored with salt solutions,their surface contact angle decreased while surface energy increased,indicating that the hydrophilicity enhanced.XPS analysis demonstrated that the carbon content on titanium surfaces of the saline storage solution experimental groups decreased significantly compared with the control group,and the higher the concentration of the saline storage solution was,the less the carbon content was.Conclusion Saline storage solution can reduce carbon accumulation on the titanium surface,maintain its hydrophilicity,and have superior anti-aging effect.
作者
唐恺洺
邱憬
TANG Kaiming;QIU Jing(Department of Oral Implantology,Affiliated Hospital of Stomatology,Jiangsu Key Laboratory of Oral Diseases,Nanjing Medical University,Nanjing 210029,China)
出处
《口腔医学》
CAS
2020年第3期193-197,203,共6页
Stomatology
基金
国家自然科学基金面上项目(81870799)
江苏省重点研发计划(社会发展)项目(BE2019728)
江苏省青年医学人才项目(QNRC2016850)
南京医科大学-苏盐智创新研发基金项目(NMU-SY201806)
江苏高校优势学科建设工程(2018-87)。
关键词
盐存储液
钛
碳累积
抗老化
saline storage solution
titanium
carbon accumulation
anti-aging
