期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 155, 期 -, 页码 245-251出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2012.01.037
关键词
Hydroxyapatite; Calcium carbonate; Microsphere; Hydrothermal method
类别
资金
- Natural Science Foundation of China [51002095, 50732002]
- National Postdoctor Science Foundation of China [20100470733, 201104293]
- Innovation Foundation of Shanghai Education Committee [11YZ86]
- Special Research Fund for Cultivating Outstanding Young Teachers in Shanghai Universities [ssd10008]
- K.C. Wong Education Foundation of Hong Kong
- Shanghai Normal University [PL927, SK201001]
Mesoporous carbonated hydroxyapatite microspheres (MCHMs) with a particle size of similar to 5 mu m have been fabricated hydrothermally by soaking calcium carbonate microspheres (CCMs) in a disodium hydrogen phosphate solution at 140 degrees C. The transformation mechanism is a dissolution-precipitation reaction. After soaking in the disodium hydrogen phosphate solution, the calcium ions released from the CCMs react with phosphate ions in the solution to form carbonated hydroxyapatite nanoparticles. These nanoparticles aggregate to form mesopores with the pore size of 4.0-14.0 nm. The MCHMs have been tested as vancomycin delivery systems due to the presence of the OH units in the carbonated hydroxyapatite structure, which provide these carriers of great affinity towards host drug molecules. In addition, in vitro tests into a simulated body fluid (SBF) demonstrate that the MCHMs are bioactive, since an apatite layer deposits on their surfaces after 3 days of assay. Such MCHMs could be useful in developing new biomaterials and have potential use in implanting and drug delivery for tissue regeneration. (C) 2012 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据