Park, Hye Jin Noh, Hanna Park, Min Park, Kihong Chang, Ji Young Lee, Hyunjung 2024-01-20T22:34:10Z 2024-01-20T22:34:10Z 2021-09-03 2008-10 1533-4880 https://pubs.kist.re.kr/handle/201004/133115 Multi-walled carbon nanotubes (MWCNT) should be treated via cutting process for engineering applications because almost as-prepared MWCNT are highly entangled and aggregated. Especially, the size distribution of MWCNT after cutting process is very important factor to determine the final properties of polymer-MWCNT composite. In this study, we take a novel method for CNT characterization, a capillary hydrodynamic fractionation (CHDF), which is a traditional chromatographic method for colloid particles. The length distributions of pre-treated MWCNT by two different methods were investigated by CHDF. One is a high-power ultrasonication directly and the other is an acid treatment followed by a high-power ultrasonication. For MWCNT, retention volume apparently depends on a combination of the length, diameter and rigidity of CNTs. We found that a high-power ultrasonication renders MWCNT short into segments of a few micrometers and the additional treatment by acid solution made those much shorter and more flexible. English AMER SCIENTIFIC PUBLISHERS FIELD-FLOW FRACTIONATION MULTIWALLED CARBON NANOTUBES SEPARATION PURIFICATION ELECTROPHORESIS CHROMATOGRAPHY WATER Length Characterization of Multi-Walled CNT by Capillary Hydrodynamic Fractionation (CHDF) Article 10.1166/jnn.2008.1367 1 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.8, no.10, pp.5220 - 5223 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 8 10 5220 5223 scie scopus 000261390500065 2-s2.0-58149260482 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article; Proceedings Paper FIELD-FLOW FRACTIONATION MULTIWALLED CARBON NANOTUBES SEPARATION PURIFICATION ELECTROPHORESIS CHROMATOGRAPHY WATER Multiwalled Carbon Nanotube Size Distribution CHDF