Author(s):
Araújo, R. F. 
; Proença, M. Fernanda R. P. ; Silva, C. J. R. ; Paiva, M. C.
Date: 2011
Persistent ID: http://hdl.handle.net/1822/15646
Origin: RepositóriUM - Universidade do Minho
Document details
The diels-alder cycloaddition reaction of 1,3-butadiene to MWCNTs
Description
In this study the funtionalization of MWCNTs with 1,3-butadiene generated in situ from solfolene was investigated. The reaction was studded at two different temperatures (100ºC and 150ºC), mass ratios (CNTs:Sulfolene of 1:1 and 1:2) and different time reaction (2, 4 and 7 days). Thermogravimetric analysis (TGA) showed high degree of functionalization in a range of 10 % to 23 % in weight loss at 800 ºC. The acid properties of funtionalized materials were recorded by potentiometric titration that suggests some oxidation during the funtionalization process (Figure 1). In Figure 2 are summarized the results of weight loss obtained by TGA and respective acid properties of functionalized carbon nanotubes. The funtionalization was also evaluated by X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM).
In this study the funtionalization of MWCNTs with 1,3-butadiene generated in situ from solfolene was investigated. The reaction was studded at two different temperatures (100ºC and 150ºC), mass ratios (CNTs:Sulfolene of 1:1 and 1:2) and different time reaction (2, 4 and 7 days). Thermogravimetric analysis (TGA) showed high degree of functionalization in a range of 10 % to 23 % in weight loss at 800 ºC. The acid properties of funtionalized materials were recorded by potentiometric titration that suggests some oxidation during the funtionalization process (Figure 1). In Figure 2 are summarized the results of weight loss obtained by TGA and respective acid properties of functionalized carbon nanotubes. The funtionalization was also evaluated by X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM).
Document Type
Conference Object
Language English
Language English
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