碳酸钙的吸附和表面有机化改性

Adsorption and Surface Organic Modiflcation of Calcium Carbonate

本文通过阴离子表面活性剂十二烷基磺酸钠(SDS)在CaCO_3/水界面上的吸附,研究了有机化碳酸钙的制备。文中测定了样品的吸附等温线、比表面、真密度、接触角、红外光谱、差热分析、和X-射线衍射。另外,还研究了CaCO_3的表面改性对聚合物力学和流变性质的影响。结果表明上述表面改性方法是有效的、有实用价值的。

In this paper , the preparation of organic calcium carbonate by using the adsorption of anionic surfactant SDSon CaCO3/ Water interface was studied. The adsorption isotherm, specific surface area, true density, contact angle, IR, DTA, TG and X-ray diffraction for samples were determined. On the other hand, the effect of surface modification of CaCO3 on the mechanical and rheological properties of polymers was also examined.The results show the method of surface modification metioned above is effective and valuable.