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Journal of Materials
Volume 2017 (2017), Article ID 4387391, 7 pages
https://doi.org/10.1155/2017/4387391
Research Article

Utilizing Fullerenols as Surfactant for Carbon Nanotubes Dispersions Preparation

1Micro Nano System Research Center, Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, College of Information Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2Advanced Coal Mine Machinery and Equipment Collaborative Innovation Center of Shanxi Province, College of Information Engineering, Taiyuan University of Technology, Taiyuan 030024, China
3MEMS Laboratory, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China
4College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Correspondence should be addressed to Shengbo Sang and Ying Liu

Received 30 September 2016; Accepted 10 January 2017; Published 23 February 2017

Academic Editor: Te-Hua Fang

Copyright © 2017 Jianlong Ji et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Dispersions of individual carbon nanotubes (CNTs) are crucial for nanodevices and polymer/CNTs nanocomposites. In this paper, stable and homogenous dispersions of individual multiwalled carbon nanotubes (MWCNTs) have been synthesized. The factors influencing the dispersibility mechanism, including the surfactant concentration and the pH value, have been investigated. SEM images display the impurities sticking on MWCNTs which have been removed. The oxygen-containing groups on the surface of MWCNTs sample have been detected through FT-IR and Raman spectra. All experimental results illustrate that using fullerenols as surfactant can greatly improve the dispersibility of MWCNTs. Moreover, the prepared dispersions exhibit good stability that the sediment percentage of fullerenols-MWCNTs is only 5.2% after 5 days.