Laboratoire Charles Coulomb UMR 5221 CNRS/UM2 (L2C)


Accueil > La Recherche > Axes & Equipes > Nanostructures & Spectroscopies > Equipe : Nanomatériaux > Thème : Elaboration et étude de réseaux, films et composites à base de nanotubes

Anisotropic nanotube-based composites

par Sébastien LAYSSAC - publié le , mis à jour le

Involved researchers : C. Zamora-Ledezma (PhD), J. Stein (PhD), E. Anglaret,
collaboration with C. Blanc and M. Nobili from the Soft Matter Group of LCVN and N. Puech, M. Maugey, C. Zakri, P. Poulin in CRPP/CNRS Bordeaux

In order to take advantage of the individual properties of CNTs at the macroscopic scale, the two main challenges are the dispersion and the orientation of the nanotubes in composites. We prepare and study various kinds of nanotube-based composites (thin films, suspensions, liquid crystals, gels). The three most original systems are nematic lyotropic aqueous suspensions [1], silica gels [2] and hot-stretched polymer films [3]. Dispersion and anisotropy of the composites are studied by Raman and photoluminescence (PL) spectroscopies. The evolution of the order parameter in the films can be well described by a simple analytical model assuming individual nanotubes and deformation at constant volume.

© L2C

© L2C

[1] C. Zamora-Ledezma et al, Nanolett. 8, 4103 (2008)
[2] C. Zamora-Ledezma et al, Carbon 46, 1256 (2008)
[3] C. Zamora-Ledezma et al, Phys. Rev. B 80, 113407 (2009)