|
个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 建筑材料研究所所长、土木水利国家级实验教学中心常务副主任
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：建设工程学院
学科：材料学. 结构工程. 市政工程
办公地点：大连理工大学3号实验楼
联系方式：0411-84707101
电子邮箱：wangbm@dlut.edu.cn
The Use of Anionic Gum Arabic as a Dispersant for Multi-Walled Carbon Nanotubes in an Aqueous Solution
点击次数：
论文类型：期刊论文
发表时间：2012-06-01
发表刊物：5th International Conference on Surfaces, Coatings and Nanostructured Materials (NANOSMAT)
收录刊物：SCIE、EI、CPCI-S、PubMed、Scopus
卷号：12
期号：6
页面范围：4664-4669
ISSN号：1533-4880
关键字：Carbon Nanotubes; Gum Arabic; Dispersion
摘要：Stable homogeneous suspensions of multi-walled carbon nanotubes (MWCNTs) were prepared using gum arabic (GA) as a dispersant. By measuring adsorption isotherm, the surface chemical properties of the MWCNTs were investigated. The dispersion of MWCNTs in aqueous solution was examined with transmission electron microscopy and ultraviolet visible spectroscopy. The stabilization mechanism of the MWCNTs in aqueous solution using the GA surfactant was discussed. The isotherm of GA adsorption on MWCNTs indicates a typical two-step mechanism of adsorption (namely "SL"), and the adsorption isotherm reaches the saturation plateau at a GA concentration of 0.45 g.L-1. The concentration measurement of MWCNTs shows that the optimum concentration of GA is 0.45 g.L-1.