Surface Modification of Multi-walled Carbon Nanotubes and Synthesis of Nanotubes-graft-polyacrylonitrile
Multi-walled carbon nanotubes (MWNTs) were oxidized with concentrated HNO<,3> and H<,2>SO<,4> to introduce carboxylic groups on the surface, then transferred into carbonyl chloride group by reacted with thionyl chloride, and finally reacted with glycol to produce hydroxyl-functionalized MWNTs (MWNT-OH). Then Ce<,4+>/hydroxyl system, which was used as a redox system, initiated acrylonitrile (AN) to prepare MWNT-g-polyacrylonitrile (MWNT-g-PAN) under the acidic condition. The TEM images indicated that the oxidized MWNTs were cut off and less twisted. As-prepared kinds of functionalized MWNTs were characterized with FTIR. The dispersion experiments showed that the dispersion of the MWNT- COOH and MWNT-OH had been improved greatly in water and the MWNT-g-PAN had very good solubility in DMF.
MWNTs acrylonitrile ceric grafting reaction
YANG Chunjia SUI Kunyan SUN Ning CHEN Xiaoting XIA Yanzhi
State Key Laboratory training base for new fibre materials and modern textile, Qingdao University, Qingdao 266071, P. R. China
国际会议
上海
英文
998-1000
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）