色散(光学)
分散剂
吸附
泥浆
纳米-
碱度
粘度
化学工程
化学
钠
电位滴定法
盐(化学)
材料科学
复合材料
有机化学
离子
工程类
物理
光学
作者
Jian‐Feng Chen,Taobo He,Wei Wu,Dapeng Cao,Jimmy Yun,Chee King Tan
标识
DOI:10.1016/j.colsurfa.2003.10.013
摘要
Adsorption of sodium salt of poly(acrylic) acid (PAANa) on nano-sized CaCO3 surface was studied by using potentiometric titration. The dispersion of nano-sized CaCO3 in water was also studied, and the viscosity of nano-sized CaCO3 slurry was measured. The results indicate that the adsorption of PAANa on nano-sized CaCO3 is significantly affected by the pH of the slurry, and the saturation adsorption amount decreases as pH value increases. The dispersion of nano-sized CaCO3 in water depends on the amount of added PAANa and also on slurry pH value. In the range of the pH values studied, the stronger the alkalinity of nano-sized CaCO3 slurry, the better is the dispersion of nano-sized CaCO3 modified with PAANa. Moreover, there exists an optimum amount of the added PAANa corresponding to the lowest viscosity of the dispersion. In short, PAANa is an effective dispersant to improve the dispersion of nano-sized CaCO3 particles in water.
科研通智能强力驱动
Strongly Powered by AbleSci AI