期刊
POLYMER
卷 50, 期 24, 页码 5787-5793出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2009.10.007
关键词
Carbon nanotubes; Polystyrene (PS); Gemini surfactant
资金
- National Natural Science Foundation of China [50873103]
- K. C. Wong Education Foundation
- Hong Kong and Beijing Nova Program [2007AO87]
Debundling and dispersion of carbon nanotubes (CNTs) are very important for preparation of polymer/CNT nanocomposites. In the present study, a self-prepared gemini surfactant, 6,6'-(butane-1 4-diylbis(oxy))bis(3-nonylbenzenesulfonic acid), is employed to achieve homogeneous and stable dispersion of multi-walled carbon nanotubes (MWNTs) in organic solvent and subsequent polystyrene (PS)/MWNT nanocomposite. Sedimentation, optical microscopy and transmission electron microscopy studies demonstrate that the gemini surfactant can greatly improve the dispersion and stabilization of MWNTs in toluene. Scanning electron microscopic images clearly confirm the homogenous dispersion of individual MWNTs in PS. In addition, desired enhanced electrical conductivity and thermal stability of the nanocomposite relative to those of the neat PS are obtained. (C) 2009 Elsevier Ltd. All rights reserved.
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