硅烷偶联剂KH-570表面修饰羟基磷灰石的结构与吸附性能研究  

Surface Modification and Characterization of Nanosize Hydroxyapatite with Silane Agent KH-570

作　　者：王晓[1] 杨启鹏[1] 徐龙泉[2] 马春[3] 王娜[1] 

机构地区：[1]大连工业大学纺织与材料工程学院,大连116034 [2]大连工业大学现代教育技术部,大连116034 [3]大连工业大学轻工与化学工程学院,大连116034

出　　处：《材料导报》2012年第6期117-120,共4页Materials Reports

基　　金：辽宁省教育厅重点实验室项目(2008S014);辽宁省自然科学基金(20082151);教育部留学归国人员启动基金(教外司留(2009)1001号)

摘　　要：采用硅烷偶联剂KH-570对羟基磷灰石粉体进行表面修饰,使羟基磷灰石在聚合物介质中有较好的相容性和分散稳定性。采用红外光谱、热重、差热、激光粒度、Zeta电位和X射线衍射等方法对表面修饰前后的羟基磷灰石进行表征分析。结果表明,KH-570硅烷偶联剂结合在羟基磷灰石表面,并未对其晶体产生明显影响;羟基磷灰石经修饰后在水溶液中的Zeta电位绝对值增加,分散稳定性提高,粒子团聚程度降低,纳米级颗粒尺寸从272.8nm减小到166nm,Cd2+吸附性能随增重率的增加而降低。The surface of hydroxyapatite was modified using silane coupling agent KH-570 to introduce organic chains to enhance the dispersity and interface compatibility of hydroxyapatite in polymer substrate. Several characte- rization methods were applied to analyze the hydroxyapatite before and after modification such as FTIR, TG, DSC, la- ser particle sizer, Zeta potential and XRD. The results showed that silane coupling agent KH-570 had been introduced onto the surface of HAp, which had less influence on the crystal of HAp. The absolute value of Zeta potential of mo- dified hydroxyapatite was increased so that the stability of dispersion was enhanced and particle agglomoration was de- creased. The particle size of nano-dispersed hydroxyapatite was reduced from 272. 8nm to 166nm.

关 键 词：偶联剂KH-570羟基磷灰石重金属吸附表征 

分 类 号：TB34[一般工业技术—材料科学与工程]