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.
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.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2009年第2期382-388,共7页
Acta Physico-Chimica Sinica
基金
国家自然科学基金(20573067
20873077)资助项目
