Regensburg 2013 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 15: Poster Session

MM 15.62: Poster

Montag, 11. März 2013, 18:00–20:00, Poster E

Investigation of ionic surfactants capability in dispersion of multi-walled carbon nanotubes in an aqueous solution — •Maryam Khazaee^1,2, Anindya Majumder³, Larysa Baraban¹, Joerg Opitz^1,3, and Gianaurelio Cuniberti⁴ — ¹Institute for materials science and max bergmann center of biomaterials, TU dresden, 01062 dresden, germany — ²Leibniz institute for crystal growth,12489 berlin, germany — ³Fraunhofer institute IZFP dresden, 01109 dresden, germany — ⁴Division of IT convergence engineering, POSTECH, pohang, korea

We present a comparative investigation of a dispersion of multi-walled carbon nanotubes (MWCNTs) in various ionic surfactants including three anionic and two cationic ones. The optimum sonication conditions for the dispersion of MWCNTs have been determined. Among these surfactants- Sodium dodecyl sulfate (SDS), Sodium dodecylbenzenesulfonate (SDDBS), Sodium cholate (SC), Dodecyltrimethylammonium bromide (DTAB) and Decyltrimethylammonium bromide (CTAB)- SDDBS and DTAB provided maximum and minimum dispersion susceptibility, respectively, which has a good agreement with their chemical structure properties. Dispersion efficiency of CNTs was quantified via determining extinction coefficients of these MWCNTs, derived from UV-Vis spectra. The dispersion efficiency of MWCNTs was characterized by transmission electron microscopy (TEM), UV-Vis spectroscopy and atomic force microscopy. These results serve as future guide for utilization of MWCNTs in their different applications such as nanocomposits, nanoelectronics, biosensor, etc.