AZ91D基CaP-CS-CNTs复合锌膜层制备及性能

Preparation and performance of AZ91D-Mg alloy based Zn^(2+) doped calcium phosphate/chitosan/CNTs compound coatings

以AZ91D镁合金为基体,采用电泳沉积结合磷酸盐缓冲溶液浸渍的方法制备复合Zn^(2+)的AZ91D镁合金基钙磷(Calcium Phosphate,Ca P)/壳聚糖(Chitosans,CSs)/碳纳米管(Carbon Nano Tubes,CNTs)复合膜层,利用单因素的实验方法,对Zn^(2+)载入量进行优化,选择一种最佳的剂量,并对AZ91D镁合金基复合膜层的生物活性进行研究.结果表明,AZ91D镁合金基Ca P-CS-CNTs-Zn复合膜层(CCZ膜层)的最佳制备工艺为Zn(NO_3)_2的加入量为0.05 g,材料具有良好的生物活性,材料的抗菌性可以在植入材料后的14 d左右,持续发挥作用.

AZ91D- Mg alloy based Zn（2＋）doped calcium phosphate/chitosan/CNTs compound coatings was prepared with the electrophoresis deposit combined with buffered solution of phosphate impregnation in which Zn（2＋）was loaded in the Ca P- CS- CNTs compound coatings. Single factor experimental method was used to optimize the loading quantity of Zn（2＋）in order to choose the optimal dosage. Bioactivity of AZ91 D magnesium alloy matrix compound coatings was also studied. The result showed that the optimal dosage of Zn（ NO_3）2was 0. 05 g for the best preparation technology for AZ91 D magnesium alloy matrix Ca P- CS- CNTs compound coatings. The materials possess good bioactivity and its antibacterial property was still active 14 days after it was implanted.