Effecs of amine molecular structure on carbon nanotubes functionalization

JIMENO, A; GOYANES, SILVIA; EZEIZA, A; KORTABERRIA, G; MONDRAGON IÑAKI,; CORCUERA, M A,

Journal of Nanoscience and Nanotechnology

ASP American Scientific Publishers

Año: 2009 vol. 9 p. 6222 - 6227

1533-4880

Three amines with different molecular structure, triethylenetetramine (TETA) and two polyetheramines (Jeffamine D-230 and Jeffamine T-403) were employed to functionalize multi-walled carbon nanotubes (MWCNT) previously oxidized by acid treatment. The functionalized MWCNT were characterized by Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, UV-vis spectroscopy and the surface modification was investigated by field emission scanning electron microscopy (FE-SEM). Thermogravimetric analysis (TGA) was employed to quantify the amount of amine groups anchored to MWCNTs. The results have shown that the effectiveness of amine functionalization is in the order TETA > D-230 > T-403, thus showing that amine molecular weight is an important parameter on functionalization of carbon nanotubes.