EDTA自组装单分子层仿生诱导生长羟基磷灰石涂层  

Biomimetic Deposition Hydroxyapatite Coating by EDTA Self-assemly Monolayer

作　　者：林岚云[1] 刘榕芳[1] 肖秀峰[1] 

机构地区：[1]福建师范大学化学与材料学院,福建福州350007

出　　处：《福建师范大学学报（自然科学版）》2005年第1期57-61,共5页Journal of Fujian Normal University：Natural Science Edition

基　　金：福建省自然科学重大基金资助项目(2000F003)

摘　　要：在钛基体表面自组装EDTA单分子层,经过CaCl2和Na2HPO4的预钙化处理,1.5倍模拟体液浸泡,仿生沉积得到羟基磷灰石涂层,并对其表面形貌、结构、组分和沉积机理进行分析.实验结果表明:模拟体液浸泡6d后即在钛基体表面得到均匀致密、球状的羟基磷灰石涂层.EDTA自组装、预钙化处理和1.5倍模拟体液提高了羟基磷灰石沉积的过饱和度,降低了形核能垒,促进了羟基磷灰石的生长.HA coatings were biomimetic deposited by functionalizing the titanium by the adsorption of EDTA self-assembly monolayer firstly, then pre-deposit treating with CaCl_2 and Na_2HPO_4 and immersing in 1.5 SBF. And the morphology,microstructure,phase constitutes and deposition mechanism of HA coatings were analyzed. The experiment results indicated: the uniform,dense and spherical HA coatings were deposited on titanium only after immersion in 1.5 SBF for 6 days. EDTA self-assemble,pre-deposit treatment and 1.5 SBF immersion increased the supersaturation of HA deposition, reduced the energy of nucleus formation, accelerated the HA growth.

关 键 词：羟基磷灰石 仿生 EDTA 自组装 

分 类 号：O613.62[理学—无机化学]