Title : ( Microwave-induced high surface functionalization of multi-walled carbon nanotubes for long-term dispersion in water )
Authors: Morteza Davarpanah , Morteza Maghrebi , Ebrahim Hosseinipour ,
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Abstract
Multi-walled carbon nanotubes (MWCNTs) were functionalized by monoethanolamine (MEA), diethanolamine (DEA) and triethanolamine (TEA) by a rapid microwave-assisted method. Surface functional groups and morphology of MWCNTs were analyzed by ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, Raman spectroscopy and transmission electron microscopy. The water dispersibility of samples was also measured over time and compared with that of MWCNT functionalized by ethylenediamine (EDA). Accordingly, the dispersibility was in the sequence MEAMWCNTs > DEA-MWCNTs > TEA-MWCNTs > EDAMWCNTs > pristine MWCNTs. The significant long-term dispersibility of MEA-MWCNTs was related to its exceptionally high surface functionalization (89.3 %) and lack of chemical bridging between adjacent MWCNTs. This strategy, along with the low-cost functionalizing agents, could pave the way for large-scale dispersion of CNTs in the polar solvents.
Keywords
, carbon nanotubes, functionalization, amines, dispersion in water, surface coverage
@article{paperid:1040777,
author = {Davarpanah, Morteza and Maghrebi, Morteza and Hosseinipour, Ebrahim},
title = {Microwave-induced high surface functionalization of multi-walled carbon nanotubes for long-term dispersion in water},
journal = {Applied Physics A: Materials Science and Processing},
year = {2014},
volume = {115},
number = {1},
month = {April},
issn = {0947-8396},
pages = {167--175},
numpages = {8},
keywords = {carbon nanotubes; functionalization; amines; dispersion in water; surface coverage},
}
%0 Journal Article
%T Microwave-induced high surface functionalization of multi-walled carbon nanotubes for long-term dispersion in water
%A Davarpanah, Morteza
%A Maghrebi, Morteza
%A Hosseinipour, Ebrahim
%J Applied Physics A: Materials Science and Processing
%@ 0947-8396
%D 2014
