多孔超细碳酸钙微球的制备  

The preparation of porous superfine calcium carbonate microspheres

作　　者：杨辉[1] 李欢[1] 

机构地区：[1]陕西科技大学生命科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2013年第5期111-115,共5页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅重大科技创新项目(2011ZKC11-2);科技部成果转化项目(2013GB2G000473);陕西科技大学博士科研启动基金项目(BJ09-14)

摘　　要：采用乳状液膜与共沉淀结合法制备多孔超细碳酸钙微球，考察了不同反应条件对碳酸钙微球形貌的影响．通过X射线衍射、扫描电子显微镜及激光粒度仪对所得的碳酸钙微球的晶体组成、形貌以及粒度进行了表征．结果表明，超细碳酸钙微球生成的最佳工艺条件为：CaCl2溶液浓度0．1mol／L、吐温-80加量4mL、超声乳化5min、搅拌反应3h，此工艺条件下获得多孔碳酸钙微球粒径在2～10μm，球形圆整，且组成为球霰石与方解石的共混体．The porous superfine calcium carbonate microspheres was prepared by using a e- mulsion liquid membrane method combining with a precipitation method in this paper. Effects of different reaction conditions on the calcium carbonate microspheres morphology were investigated, and finally the crystal composition, morphology and particle size of the obtained calcium carbonate were characterized through X-ray diffraction （XRD）, scanning e- lectron microscope（SEM） and laser particle size instrument. The results showed that the op- timal conditions for porous superfine calcium carbonate microspheres are as follows, the so- lution concentration of CaCl2 was 0.15mol/L, the amount of Tween-80 used in preparation was 4 mL, the time of ultrasonic emulsification was 5 min, the reaction time with stirring was 3 h. Under these conditions, the particle size of porous superfine calcium carbonate ranged from 2 to 10μm, round, and composed of the vaterite and calcite.

关 键 词：乳状液膜法 共沉淀法 碳酸钙 微球 

分 类 号：R318.08[医药卫生—生物医学工程]