摘要
在水-十二烷基硫酸钠（SDS）-α-甲基丙烯酸（MAA）-聚乙二醇400（PEG400）-盐五组分溶液体系中制备了碳酸钙微球（中空），其粒径在0．5～1．5μm之间。并且对无表面活性剂SDS以及SDS浓度为0．2mmol·L^-1情况下制备的碳酸钙微结构进行了考察，得到了由片状粒子堆积而成的花球，直径约在0．8～3μm之间。考察了后处理条件对碳酸钙粒子的影响，后处理温度为140℃时，原来粒径小的碳酸钙微粒聚集成粒径较大的多面体稳定结构。用XRD、SEM等手段对样品进行了表征，对其形成机理进行了分析和探讨。
The calcium carbonate microsphere （hollow sphere）, with a size distribution of 0. 5～1.5μm, has been synthesized in a solution system of water-sodium dodecyl sulfate （SDS）-α-methacrylic acid （MAA）-polyethylene glycol400 （ PEG400）-salt solute. The microstructures of calcium carbonates obtained at [SDS] =0 and [SDS] =0.2 mmol · L^-1 were investigated. The flower spheres composed of sheet-like particles, with the diameter of about 0. 8 ～3μm, were obtained. The effects of final treatment conditions on the restuting CaCO3 particles were examined. When the final treatment temperature was 140 ℃, the particles became steady polyhedron with a bigger size. The samples were characterized by XRD and SEM. The mechanism was analyzed and discussed.
出处
《青岛科技大学学报（自然科学版）》
CAS
2006年第4期320-323,共4页
Journal of Qingdao University of Science and Technology:Natural Science Edition
关键词
碳酸钙
微球
制备
表面活性剂
calcium carbonate
microsphere
synthesis
surfactant
