羟基磷灰石/壳聚糖复合层的制备及其结合力、润湿性研究  

Study on the preparation,bonding strength and wettability of HA/CS composites

作　　者：王晓琳 刘世敏[2] 李宝娥[1] 马建威 张贤琳 李海鹏[1] 梁春永[1] 王洪水[1] WANG Xiaolin;LIU Shimin;LI Baoe;ZHANG Xianlin;MA Jianwei;LI Haipeng;LIANG Chunyong;WANG Hongshui(School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300330,China;Department of Gem and Material Technology,Tianjin University of Commerce,Tianjin 300334,China)

机构地区：[1]河北工业大学材料科学与工程学院,天津300130 [2]天津商业大学宝石及材料工艺学系,天津300134

出　　处：《功能材料》2018年第8期8119-8123,8130,共6页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51401146);留学归国人员资助项目(C2015003038);河北省自然科学基金资助项目(E2017202032)

摘　　要：通过微弧氧化处理,在Ti植入体表面制备了兼具花瓣和多孔形貌的羟基磷灰石(HA)涂层,而后通过浸渍-提拉法又在HA表面成功装载了不同浓度的壳聚糖(CS)。对所得复合层进行SEM、EDS、XRD检测,探究负载CS前后复合层的的形貌、组成及物相变化;通过FT-IR分析复合层所含官能团及HA/CS界面的相互作用;并对不同HA/CS样品进行接触角测试,探究不同CS浓度对样品表面润湿性的影响;通过划痕法测试CS与HA的界面结合强度。结果表明,随着CS浓度增大,可逐渐遮盖HA层的花瓣、多孔形貌特征,使得钛表面形成光滑、连续的CS膜层;HA和CS之间有一定的键合作用,界面结合力可达8.3N;CS的负载可有效降低HA层的表面润湿性,且随着CS浓度增大,表面润湿性不断降低。In this work,porous hydroxyapatite（HA）coating with flower-shaped morphology was prepared on the surface of Ti implants by micro-arc oxidation treatment,and then different concentrations of chitosan（CS）were successfully loaded on the HA surface through dip-coating method.SEM,EDS and XRD tests were performed to investigate the morphology,elemental composition and physical phase of the coatings before and after CS loading.FT-IR was used to detect the functional groups and their interaction within the coatings.The wettability of the different HA/CS samples was evaluated by measuring the contact angles with deionized water.And the interface bonding strength between CS and HA was tested by scratch method.The results showed that,with the increase of CS concentration,the flower-shaped HA coatings were gradually covered,finally forming a smooth and continuous CS layer on Ti surface.The interface bonding strength could be up to 8.3 Ndue to the interactions between HA and CS.The load of CS could effectively reduce the surface wettability of the HA layer,and the surface wettability decreased with the increase of CS concentration.

关 键 词：微弧氧化 羟基磷灰石 壳聚糖 结合力 接触角 

分 类 号：TB33[一般工业技术—材料科学与工程]