Grafting modification and structural degradation of multi-walled carbon nanotubes under the effect of ultrasonics sonochemistry
| Autor: | Yulu Ma, Qiuying Li, Chifei Wu, Chuang Mao |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Thermogravimetric analysis
Materials science Acoustics and Ultrasonics Organic Chemistry technology industry and agriculture Analytical chemistry Infrared spectroscopy macromolecular substances Carbon nanotube Grafting law.invention Sonochemistry Inorganic Chemistry Thermogravimetry surgical procedures operative Chemical engineering law Transmission electron microscopy Chemical Engineering (miscellaneous) Environmental Chemistry Radiology Nuclear Medicine and imaging Fourier transform infrared spectroscopy |
| Zdroj: | Ultrasonics sonochemistry. 16(6) |
| ISSN: | 1873-2828 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect