Dispersing nanotubes with surfactants: A microscopic statistical mechanical analysis

被引：42

作者：

Patel, N ^{[1
]}

Egorov, SA ^{[1
]}

机构：

[1] Univ Virginia, Dept Chem, Charlottesville, VA 22901 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 41期

关键词：

D O I：

10.1021/ja0530570

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A first theoretical study of surfactant-stabilized carbon nanotube dispersions is presented. Density functional theory is used to compute potential of mean force between nanotubes in an aqueous solution of cationic surfactant ndecyltrimethylammonium chloride. In agreement with experimental results, it is found that stable dispersions can be prepared for surfactant bulk concentrations below the critical micelle concentration. Computed density profiles of head and tail segments indicate that surfactants adsorb on nanotube surfaces in a random fashion rather than form cylindrical micelles, which is also in agreement with recent small-angle neutron scattering measurements. Copyright © 2005 American Chemical Society.

引用

页码：14124 / 14125

页数：2

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