摘要：制备纳米硫酸钙（CaSO4）颗粒的关键在于采用适宜的制备工艺条件配制反相微乳液．使CaSO4晶体在理想的环境中生长。采用AOT、OP-10复合表面活性剂／环己烷／正戊醇／水溶液反相微乳液反应体系，在水与表面活性剂的摩尔比（水表比）60=20、反应物浓度n（[Ca^2＋]）／n（SO^2＋]）-0．125mol／L、陈化时间t=10min的条件下，制备出了形貌均一。平均粒径为70nto的球形CaSO4颗粒。用扫描电子显微镜（SEM）对产物形貌和大小进行了表征。实验分析了水表比ω、反应物浓度n（[Ca^2＋]）／n（[SO2/4]）值、陈化时间t等因素对纳米CaSO4颗粒粒径的影响。
A key factor of preparing nano calcium sulfate is to employ a appropriate technology condition for forming reverse micelle microemulsion, which makes CaSO4 crystal grow with an ideal templating effect of reverse mieelle. Homogeneous spherical nano CaSO4 with an average diameter of 70nm were prepared by using reverse micelle microemulsion of AOT, OP-10 compound surfactants/cyclohexane/n-pentanol/water under mole ratio of water to surfactants 20, reactants Concentration n（[Ca^2＋ ]）/n（[SO4/2-]）=0. 125mol/L and aging time 10 min. The influence factors such as the molar ratio of water to surfactants （ω）, reactants concentration, n（[Ca^2＋]）/n（[SO4/2- ]） value, aging time t, etc. were also analyzed.
参考文献
| [1] | 李春梅,罗康碧,李沪萍,陈锐.硫酸钙微米/纳米材料的研究进展[J].化工科技,2009(04):57-60. |
| [2] | Gleiter H .[J].Acta Materialia,2000,48:1-29. |
| [3] | 杨玉芬,陈清如.纳米材料的基本特征与纳米科技的发展[J].中国粉体技术,2002(03):22-27. |
| [4] | 刘忆,刘卫华,訾树燕,王彦芳.纳米材料的特殊性能及其应用[J].沈阳工业大学学报,2000(01):21-24,72. |
| [5] | Li Liang;Zhu Yingjie;Ma Mingguo .[J].Materials Let-ters,2008,62:4552-4554. |
| [6] | Kuang Daibin;Xu Anwu;Fang Yueping et al.[J].Journal of Crystal Growth,2002,244:379-383. |
| [7] | 高远浩,刘锦,牛和林.单晶CaSO4纳米管的制备--非片状结构化合物形成纳米管的新途径[J].高等学校化学学报,2005(09):1594-1597. |
| [8] | 张袖丽,李丽,丁亚平.硫酸钙纳米棒的简易合成与光致发光特性[J].无机材料学报,2006(06):1491-1495. |
| [9] | Barbara S;GianCarlo C;Marcello M et al.[J].Journalof Colloid and Interface Science,2006,298:487-490. |
| [10] | 张巨松,郑万荣,范兆荣,高飞,邓嫔,孙蓬.α半水石膏晶体生长习性的探讨[J].沈阳建筑大学学报（自然科学版）,2008(02):261-264. |
| [11] | 李颖,王光祖.纳米材料的表征与测试技术[J].超硬材料工程,2007(02):38-42. |
| [12] | Hota A;Shinkha J B;Kartic C .[J].Colloids and Sur-faces,2004,232:119-127. |
| [13] | 张克从.近代晶体学基础(下)[M].北京:科学出版社,1987:87-89. |
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