摘要
采用水溶液恒电流电化学聚合法在纯钛表面制备了PPy涂层(Ti/PPy)。利用傅里叶红外光谱、X射线光电子能谱测定表面化学成分。用扫描电子显微镜观察涂层微观形貌,接触角测量仪检测接触角并计算表面能。搭接剪切法测定涂层与基底间的结合强度。通过对成骨细胞在Ti/PPy表面附着、铺展以及增殖能力的检测,评价Ti/PPy对成骨细胞生长的影响。结果表明,Ti/PPy的表面能(59.5mJ/m2)高于纯钛(47.0mJ/m2),并且具有良好的结合强度(9.16±1.62)MPa。Ti/PPy与Ti一样具有良好的生物相容性,成骨细胞能够在Ti/PPy涂层表面完成附着、铺展以及增殖的生物功能。
PPy coatings have been successfully electrosynthesized on the pure Ti-substrates（Ti/PPy） by constant current method in aqueous media. Though the analysis of FTIR and XPS, the chemical composition of the Ti/PPy was detected. SEM was used to characterize surface morphology, and a goniometer was used to evaluate the contact angle and surface energy of Ti/PPy. The shear bond strength of the PPy coating was measured by Lap shear test. Cells attachment, spreading and proliferation activity experiments were completed to evaluate the osteoblasts behavior on Ti/PPy. In conclusion： surface energy of Ti/PPy （59.5 mJ/m^2） is higher than that of titanium （47.0 m J/m^2）. The PPy coating has an acceptable shear bond strength（9.16±1.62） MPa. Ti/PPy shows good biocompatibility as well as Ti. Osteoblasts could grow on Ti/PPy with good attachment, spreading and proliferation abilities.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第1期91-95,共5页
Rare Metal Materials and Engineering
基金
国家自然科学基金资助项目(30500118)
解放军第四军医大学优秀博士学位论文课题项目(2001006)资助
关键词
钛
聚吡咯
涂层
成骨细胞
titanium
polypyrrole
coating
osteoblast
