Effect of Modification by WTP-08 on Dispersity of Nanosized CalciumCarbonate and Its Mechanism
The dispersity of nanosized calcium carbonate modified by alkyl amine dimethyl phosphonic acid (WTP-08) through mechano-chemical method in different media was investigated. The modification mechanism was investigated by analyzing the surface energy and its thermodynamic effect on dispersity of nanosized calcium carbonate. The results show that the free energies of nanosized calcium carbonate modified by WTP-08 and its interfacial free energies in air and non-polar media decrease significantly, while the interfacial free energy in water increases remarkably. It can be concluded that modification by WTP-08 improves the dispersion tendency of nanosized calcium carbonate in air and non-polar medium, while it decreases in water. Therefore, modification by WTP-08 makes the dispersity of nanosized calcium carbonate increase in air and non-polar medium and decrease in water.
Alkyl amine dimethyl phosphonic acid Nanosized calcium carbonate Modification Surface free energy Dispersity
Hao Ding Baikun Wang Ning Liang Kun Liu
School of Materials Science and Technology, China University of Geosciences (Beijing), No.29 ofXueYuan Road, HaiDian District, Beijing 100083, China
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
51-56
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）