| 以壳聚糖为添加剂制备单分散碳酸钙微粒 |
| |
| 引用本文： | 唐海雄,郭亚平,周玉,贾德昌.以壳聚糖为添加剂制备单分散碳酸钙微粒[J].稀有金属材料与工程,2009,38(Z2). |
| |
| 作者姓名： | 唐海雄 郭亚平 周玉 贾德昌 |
| |
| 作者单位： | 哈尔滨工业大学,黑龙江,哈尔滨,150080 |
| |
| 基金项目： | 新世纪优秀人才计划，哈尔滨工业大学优秀团队支持计划 |
| |
| 摘 要： | 以壳聚糖为添加剂,采用无水碳酸钠与氯化钙共沉淀反应制备单分散碳酸钙微粒.利用扫描电镜(SEM),X射线粉末衍射(XRD),傅里叶变换红外吸收光谱(FTIR),热重差热分析(TG-DSC)等方法研究添加剂壳聚糖对碳酸钙的形貌、结构的影响及其形成机制.结果表明,壳聚糖添加剂能有效控制碳酸钙的晶型与形貌.当无添加剂时,所得产物为球霰石与方解石的混合物,形貌为球形与不规则六面体团;当添加少量壳聚糖时,所得的产物主要为层叠结构的斜六面体方解石,并利用周期键链(PBC)理论模型解释了层叠结构.壳聚糖浓度对碳酸钙的晶型与形貌影响不大.碳酸钙微粒表面黏附了部分壳聚糖,其含量随着反应体系中壳聚糖浓度的提高而增大.
|
| 关 键 词： | 生物矿化 碳酸钙 壳聚糖 添加剂 |
Synthesis of Monodisperse CaCO_3 Particles Using Chitosan as an Additive |
| |
| Tang Haixiong,Guo Yaping,Zhou Yu,Jia Dechang.Synthesis of Monodisperse CaCO_3 Particles Using Chitosan as an Additive[J].Rare Metal Materials and Engineering,2009,38(Z2). |
| |
| Authors: | Tang Haixiong Guo Yaping Zhou Yu Jia Dechang |
| |
| Affiliation: | Tang Haixiong,Guo Yaping,Zhou Yu,Jia Dechang (Harbin Institute of Technology,Harbin 150080,China) |
| |
| Abstract: | Monodisperse CaCO3 particles were synthesized by a precipitation reaction in Na2CO3/CaCl2 solution using chitosan as an additive. The as-prepared products were characterized with Scanning electron microscopy (SEM),X-ray diffraction (XRD),Fourier transform infrared spectroscopy (FTIR) and Thermogravimetry-differential scanning calorimeter (TG-DTA). The effect of chitosan on the morphologies and polymorphs of CaCO3 particles was also discussed. The products were a mixture of calcite and vaterite in the absenc... |
| |
| Keywords: | biomineralization CaCO_3 chitosan additive |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
