Spectroscopic detection of carbon nanotube interaction with amphiphilic molecules in epoxy resin composites

被引：21

作者：

Bassil, A ^{[1
]}

Puech, P

Landa, G

Bacsa, W

Barrau, S

Demont, P

Lacabanne, C

Perez, E

Bacsa, R

Flahaut, E

Peigney, A

Laurent, C

机构：

[1] Univ Toulouse 3, LPST, IRSAMC, UMR 5477, F-31062 Toulouse 4, France

[2] Univ Toulouse 3, LPP, CIRIMAT, CNRS,UMR 5085, F-31062 Toulouse 4, France

[3] Univ Toulouse 3, IMRCP, CNRS, UMR 5623, F-31062 Toulouse 4, France

[4] Univ Toulouse 3, LCMIE, CIRIMAT, CNRS,UMR 5085, F-31062 Toulouse 4, France

来源：

JOURNAL OF APPLIED PHYSICS | 2005年 / 97卷 / 03期

关键词：

D O I：

10.1063/1.1846136

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Incorporation of carbon nanotubes into epoxy resin composites has the effect of increasing electrical conductivity at low percolation levels. An amphiphilic molecule such as palmitic acid has been used to increase the surface contact area and to improve the dispersion of the carbon nanotube bundles in the prepolymer. The chemical environment of the dispersed nanotubes has been probed using vibrational Raman spectroscopy. Spectroscopic Raman maps on sample surfaces (60x60 mum(2)) with ratios of nanotubes to palmitic acid varying from 1:2 to 2:1 by weight, have been recorded to test the uniformity of the dispersion. Substantial spatial inhomogeneities have been observed in the G-band shift and an additional spectral band at 1450 cm(-1). The 1450 cm(-1) band has been attributed to the CH3 group of the amphiphilic molecules adsorbed onto the nanotube surface. The maps are correlated with the measured electrical conductivity values. The highest conductivity has been observed for the best dispersed nanotubes and nanotubes with the highest degree of interaction. (C) 2005 American Institute of Physics.

引用

页数：4

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