Characterization of commercial double-walled carbon nanotube material: composition, structure, and heat capacity

A purified commercial double-walled carbon nanotube (DWCNT) sample was investigated by transmission electron microscopy (TEM), thermogravimetry (TG), and Raman spectroscopy. Moreover, the heat capacity of the DWCNT sample was determined by temperature-modulated differential scanning calorimetry in t...

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Bibliographic Details
Published in:Journal of materials science 2009-07, Vol.44 (13), p.3498-3503
Main Authors: Silva, Glaura G., Musumeci, Anthony W., Gomes, Ana Paula, Liu, Jiang-Wen, Waclawik, Eric R., George, Graeme A., Frost, Ray L., Pimenta, Marcos A.
Format: Article
Language:English
Subjects:
Amorphous materials
Carbon
Carbon nanotubes
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Derivatives
Heat capacity
Materials Science
Nanocomposites
Nanomaterials
Nanostructure
Optimization
Oxidation
Polymer Sciences
Raman spectroscopy
Solid Mechanics
Specific heat
Thermogravimetry
Transmission electron microscopy
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Summary:A purified commercial double-walled carbon nanotube (DWCNT) sample was investigated by transmission electron microscopy (TEM), thermogravimetry (TG), and Raman spectroscopy. Moreover, the heat capacity of the DWCNT sample was determined by temperature-modulated differential scanning calorimetry in the range of temperature between −50 and 290 °C. The main thermo-oxidation characterized by TG occurred at 474 °C with the loss of 90 wt% of the sample. Thermo-oxidation of the sample was also investigated by high-resolution TG, which indicated that a fraction rich in carbon nanotube represents more than 80 wt% of the material. Other carbonaceous fractions rich in amorphous coating and graphitic particles were identified by the deconvolution procedure applied to the derivative of TG curve. Complementary structural data were provided by TEM and Raman studies. The information obtained allows the optimization of composites based on this nanomaterial with reliable characteristics.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-009-3468-x