Abstract: The CaCO3 hollow microspheres were successfully synthesized by facile precipitation reaction of aqueous solutions CaCl2 and Na2CO3 in the presence of polyvinylpyrrolidone (PVP) and sodium dodecyl sulfonate (SDS). Introducing the surfactant/polymer composite into reaction system is in order to not only understand the effects of the surfactant/polymer composite on the crystallization and aggregation of calcium carbonate, but also explore a possible realized and simple preparation method. The products were characterized by FESEM, TEM and XRD. At the same time, the experimental conditions were investigated to explore the crystallization and aggregation of calcium carbonate. The reaction mechanism was discussed in this work.

Key words: CaCO3, hollow microspheres, preparation, mechanism

摘要： 采用沉淀反应方法，利用聚乙烯吡咯烷酮(PVP)和十二烷基磺酸钠(SDS)复合添加剂作为有机模板，制备了中空球状方解石型碳酸钙，同时考察了不同温度、SDS和PVP浓度对碳酸钙结晶和聚集行为的影响，进而对其反应机理进行了初步探讨。

关键词: 碳酸钙, 中空微球, 制备, 机理