• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Engineering and Performance >In Vitro Biological Characterization of Natural Hydroxyapatite/Single-Walled Carbon Nanotube Composite Coatings Synthesized by Electrophoretic Deposition on NiTi Shape Memory Alloy
【24h】

In Vitro Biological Characterization of Natural Hydroxyapatite/Single-Walled Carbon Nanotube Composite Coatings Synthesized by Electrophoretic Deposition on NiTi Shape Memory Alloy

机译：通过电泳沉积在Niti形记忆合金上合成的天然羟基磷灰石/单壁碳纳米管复合涂层的体外生物学特征

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the current work, the composite coating of natural hydroxyapatite (nHA)/single-walled carbon nanotubes (SWCNTs) with various contents of SWCNTs (0, 0.5, 1, and 2 wt.%) was applied on NiTi using electrophoretic deposition (EPD). Before the deposition process, the nanotubes were functionalized following the chemical oxidation method and characterized by FTIR. The sintering of samples was conducted at 800 degrees C for 3 h in a tube furnace under an argon atmosphere. The surface and cross-sectional microstructure of coatings was studied using a scanning electron microscope. The x-ray diffraction was utilized to investigate the effect of the SWCNTs secondary phase on the phase composition of the nHA layer after sintering. The incorporation of SWCNTs into the nHA layer resulted in the decomposition of some HA into the beta-tricalcium phosphate phase. The tensile test was applied and displayed the enhancement in adhesion strength of nHA coating from 17.2 to 25 MPa after composing with 2 wt.% SWCNTs. The wettability of surfaces was assessed by measuring DMEM cell culture contact angles. The appraisement of the Ni ions release from the substrate demonstrated that the lowest release of Ni ions into DMEM cell culture after 7 days of incubation is achieved from NiTi coated with nHA-1 wt.% SWCNTs. The in vitro biocompatibility of the samples was pursued by MG63 osteoblast cell culturing and MTT assay. The highest cell attachment and proliferation on nHA-1 wt.% SWCNTs coating were attributed to the least toxic Ni ions release from the substrate of that.
机译：在当前的工作中，使用电泳沉积在NITI上施加具有各种SWCNT（0,0.5,1和2重量％）的天然羟基磷灰石（NHA）/单壁碳纳米管（SWCNT）的复合涂层（0,0.5,1和2重量％）（EPD ）。在沉积过程之前，通过化学氧化方法官能化纳米管，并通过FTIR表征。样品的烧结在氩气氛下在管炉中以800℃进行3小时。使用扫描电子显微镜研究涂层的表面和横截面微观结构。利用X射线衍射来研究SWCNT二次相对烧结后NHA层的相组成的影响。将SWCNT结合到NHA层中导致一些HA的分解成β-三钙相。施用拉伸试验并在用2重量％的SWCNT组成后从17.2-25MPa涂覆NHA涂层的粘合强度的增强。通过测量DMEM细胞培养接触角来评估表面的润湿性。从基材中释放的Ni离子释放的评价证明，从涂覆7天孵育后，Ni离子的最低释放在孵育7天后是从涂覆的NHA-1wt.％SWCNTS涂覆7天后。通过Mg63成骨细胞培养和MTT测定来追踪样品的体外生物相容性。 NHA-1重量％的最高细胞附着和增殖。％SWCNTs涂层归因于来自基材的最低毒性Ni离子。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号