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| Measurement of Characteristics of PU/MWNT Films Made of Modified MWNT by Dry Heat Treatment |
| Seung-Jin Kim, Jeong-Hyun Kim, Jun-Hyeong Park |
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Abstract This study surveys the electrical conductivity of multi-walled carbon nanotube (MWNT) /polyurethane (PU) nanocomposites film according to the dispersion conditions. For this purpose, various kinds of polyurethane block copolymer (PU)/multi-wall carbon nanotube (MWNT) with different MWNT contents were mixed and dispersed, and their characteristics related to the dispersion were investigated. Multi-walled carbon nanotubes (MWNT) are of interest in many areas of nanotechnology and used in a number of novel applications. However effective dispersion remains a problem and one solution is to functionalize the nanotubes. In this work, MWNTs are functionalized using an oxidative technique, including dry thermal treatment. The dispersion variation of the PU/MWNT nanocomposite films with MWNT content ranging from 0.1~5.0 wt% was examined. The various characteristics of the dispersed PU/MWNT nanocomposite film were characterized using thermo gravimetric analyser (TGA), scanning electron microscope (SEM) and measuring instrument of electrical conductivity. The degree of dispersion of PU/MWNT nanocomposite films according to the dispersion conditions was shown in various situations. The bad dispersion of PU/MWNT film was revealed during the phase separation between PU matrix and MWNT. Also PU/MWNT nanocomposite film shows good electro-conductivity on its surface because MWNT was collected on the surface of composite film due to its low density.
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| Cite this article: |
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Seung-Jin Kim,Jeong-Hyun Kim,Jun-Hyeong Park. Measurement of Characteristics of PU/MWNT Films Made of Modified MWNT by Dry Heat Treatment[J]. Journal of Fiber Bioengineering and Informatics, 2011, 3(4): 216-223.
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2011, Vol. 3 
