I&EC 190 |
| Dong Jae Bae, Ji Yeong Lee, Jin Soo Kim, and Young Hee Lee. Center for Nanotubes and Nanostructured Composites, Sungkyunkwan University, Gang An Gu, Suwon, 440-746, South Korea |
| We have tried to nanodisperse for two kinds of singlewall carbon nanotubes (Hipco sample by CNI and arc discharge by us) in 1,2 dichloroethane (DCE) with several treatment conditions. The raw Hipco singlewall carbon nanotubes (SWNTs) and purified arc SWNTs pretreated with the tetra-methyl silane were put in DCE at a concentration of 0.01 mg / ml and sonicated in a bath sonicator for various times and centrifuged at a 32000 g for 4 hours. We have analyzed our DCE suspensions using the atomic force microscopy (AFM) and dynamic light scattering. Especially, the height distributions of the Hipco SWNTs suspended on the SiO2 substrate showed two separated peaks at 1.7 nm due to isolated nanotubes and at 3.2 nm from small sizes of bundles. The peak was merged to a single peak at 1.7 nm with the elapsed times of suspension after centrifugation. |
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Industrial and Engineering Chemistry Posters
5:00 PM-7:00 PM, Tuesday, March 30, 2004 Anaheim Convention Center -- Hall A, Poster
Division of Industrial and Engineering Chemistry |