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A facile gemini surfactant-improved dispersion of carbon nanotubes in polystyrene |
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| Authors: | Guoxing Sun Guangming Chen Jun Liu Jiping Yang Zhengping Liu Ru Li |
| Affiliation: | a Beijing National Laboratory for Molecular Sciences (BNLMS), Laboratory of New Materials and State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, PR China b Institute of Polymer Chemistry and Physics of College of Chemistry, BNU Key Lab of Environmentally Friendly and Functional Polymer Materials, Beijing Normal University, Beijing 100875, PR China c Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191, PR China d Beijing Key Laboratory of Clothing Materials R D and Assessment, Beijing Institute of Clothing Technology, Beijing 100029, PR China |
| Abstract: | 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. |
| Keywords: | Carbon nanotubes Polystyrene (PS) Gemini surfactant |
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