文献类型：期刊文献

英文题名：Grafting modification and structural degradation of multi-walled carbon nanotubes under the effect of ultrasonics sonochemistry

作者：Li, Qiuying[1,2];Ma, Yulu[2];Mao, Chuang[1];Wu, Chifei[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Polymer Alloy Lab, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Safety Sci Pressurized Syst, Shanghai 200237, Peoples R China

年份：2009

卷号：16

期号：6

起止页码：752

外文期刊名：ULTRASONICS SONOCHEMISTRY

收录：;EI(收录号：20092212100235);WOS:【SCI-EXPANDED(收录号:WOS:000267160100011)】；

基金：This work was supported by Shanghai Leading Academic Discipline Project (B503), Science Foundation of China Postdoctor (20080430632) and Science Foundation of Shanghai Postdoctor.

语种：英文

外文关键词：MWCNTs; Ultrasonics sonochemistry; Grafting

摘要：Polyvinyl pyrrolidone (PVP) grafted multi-walled carbon nanotubes (MWCNTs) were prepared by the degradation effect of ultrasonics sonochemistry. PVP macroradicals formed by sonochemical degradation of a PVP solution were trapped by MWCNTs and grafted onto the surface of MWCNTs. It was confirmed by Fourier transform infrared spectroscopy and thermogravimetric analysis that the PVP was covalently bonded on the MWCNTs. Transmission electron microscopy showed nanotubes in the grafted samples were shorter than the original MWCNTs due to the crushing effect of ultrasonics sonochemistry. Both the decrease in length of the MWCNTs and the PVP grafted onto them are beneficial for their dispersion in solvents. (C) 2009 Elsevier B.V. All rights reserved.