TY - GEN
T1 - Preparation and characterization of amino functionalized graphite nanoplatelet
AU - Geng, Yan
AU - Wang, Shu Jun
AU - Li, Jing
AU - Kim, Jang Kyo
PY - 2008
Y1 - 2008
N2 - Graphite nanoplatelet (GNP) has been widely used as a low-cost filler for conducting polymer nanocomposites. To improve the compatibility and interfacial interactions with polymer matrix, GNPs were treated with amino-functionalization agents, including triethylenetetramine (TETA) and ammonium bicarbonate (NH 4HCO3), using ultrasonication as the dispersion technique to promote functionalization process. Several characterization tools were employed to determine the surface chemistry of GNPs before and after functionalization, as well as to characterize the effects of ultrasonication on the aspect ratio of GNPs. Amine and amide functional groups were identified to be present on the surface of functionalized GNPs. The TETA treated GNPs exhibited a much higher nitrogen content along with more prominent functional groups than the NH4HCO3 treated GNP, which is consistent with the higher relative intensities of D bands in Raman spectra as a reflection of a greater degree of disorder for the former GNPs. The suspension stability of GNP dispersion was significantly improved after functionalization, in particular for the TETA treated GNPs.
AB - Graphite nanoplatelet (GNP) has been widely used as a low-cost filler for conducting polymer nanocomposites. To improve the compatibility and interfacial interactions with polymer matrix, GNPs were treated with amino-functionalization agents, including triethylenetetramine (TETA) and ammonium bicarbonate (NH 4HCO3), using ultrasonication as the dispersion technique to promote functionalization process. Several characterization tools were employed to determine the surface chemistry of GNPs before and after functionalization, as well as to characterize the effects of ultrasonication on the aspect ratio of GNPs. Amine and amide functional groups were identified to be present on the surface of functionalized GNPs. The TETA treated GNPs exhibited a much higher nitrogen content along with more prominent functional groups than the NH4HCO3 treated GNP, which is consistent with the higher relative intensities of D bands in Raman spectra as a reflection of a greater degree of disorder for the former GNPs. The suspension stability of GNP dispersion was significantly improved after functionalization, in particular for the TETA treated GNPs.
KW - Amino functionalization
KW - Graphite nanoplatelet
KW - Suspension stability
KW - Ultrasonication
UR - http://www.scopus.com/inward/record.url?scp=84887556850&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84887556850
SN - 9784901381321
T3 - Progress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008
SP - 52
EP - 55
BT - Progress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008
T2 - 6th Asian-Australasian Conference on Composite Materials: Progress of Composites 2008 in Asia and Australasia, ACCM 2008
Y2 - 23 September 2008 through 26 September 2008
ER -