物理化学学报 >> 2009, Vol. 25 >> Issue (02): 382-388.doi: 10.3866/PKU.WHXB20090232

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两亲分子对碳纳米管的分散稳定作用

窦文龄; 辛霞; 徐桂英   

  1. 山东大学胶体与界面化学教育部重点实验室, 济南 250100
  • 收稿日期:2008-09-28 修回日期:2008-10-17 发布日期:2009-01-16
  • 通讯作者: 徐桂英 E-mail:xuguiying@sdu.edu.cn

Dispersion of Carbon Nanotubes by Amphiphilic Molecules

DOU Wen-Ling; XIN Xia; XU Gui-Ying   

  1. Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, P. R. China
  • Received:2008-09-28 Revised:2008-10-17 Published:2009-01-16
  • Contact: XU Gui-Ying E-mail:xuguiying@sdu.edu.cn

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摘要： 综述了近年来国内外对碳纳米管在两亲分子水溶液中的分散作用研究, 从表面活性剂、聚合物和生物大分子三方面, 分别阐述了用非成键法对碳纳米管进行分散的不同机理. 离子型表面活性剂或聚电解质主要靠亲水基团之间的静电斥力阻止碳纳米管之间的聚集, 而非离子型表面活性剂或大分子则主要靠亲水基团所产生的空间位阻使分散体系保持稳定.

关键词: 碳纳米管, 分散性, 表面活性剂, 聚合物, 生物大分子

Abstract: Recently, plenty of attention has been paid to the dispersion of carbon nanotubes by amphiphilic molecules. In this paper, different mechanisms for a non-covalent dispersion of carbon nanotubes are summarized from the three fields of surfactants, polymers, and biomacromolecules. Ionic surfactants or polyelectrolytes mainly depend on an electrostatic repulsion between hydrophilic groups to prevent carbon nanotube aggregation while non-ionic surfactants or polymers mainly rely on a steric stabilization of hydrophilic groups to disperse the carbon nanotubes.

Key words: Carbon nanotube, Dispersion, Surfactant, Polymer, Biomacromolecule