多壁碳纳米管的表面修饰及其在溶剂中的分散性  

Surface modification of multiwalled carbon nanotubes and their dispersion in solvents

作　　者：周小平[1] 余腊妹[1] 郭乔辉[1] 周政平[1] 侯豪情[1] 

机构地区：[1]江西师范大学化学化工学院,南昌330022

出　　处：《化工新型材料》2009年第6期61-62,92,共3页New Chemical Materials

基　　金：江西省自然科学基金(24064001);江西省教育厅科技重点项目(20072126)资助

摘　　要：利用高温催化裂解生长多壁碳纳米管,用硝酸氧化使其表面羧酸化,并经酰氯化后与十二烷基胺反应形成表面酰胺化,通过红外、核磁、微量热天平等方法进行表征。结果表明:硝酸氧化后的碳纳米管在水等强极性溶剂中有良好的分散性;酰胺化后,十二烷基脂肪链使碳纳米管表面极性大为降低,因此在氯仿等弱极性溶剂中有良好的分散性。Muhiwalled carbon nanotubes, formed by catalysis pyrolysis, were dealt with concentrated nitric acid to produce the surface-carboxylated carbon nanotubes. The later was treated with thionyl chloride and dodecyl amine to form the surface-amidated carbon nanotubes. Characterized using IR, NMR, TGA. The carbon nanotubes, treated with nitric acid had a good dispersion in strong-polar solvent i. e. water due to the strong polarity on their surface; The surface-amidated, had a low polarity, which made them a good dispersion in low-polar solvent i.e. chloroform.

关 键 词：碳纳米管 表面修饰 分散性 十二烷基酰胺 

分 类 号：TB383.1[一般工业技术—材料科学与工程]