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Issue 4, 2003
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A study on the effect of surface treatment of carbon nanotubes for liquid crystalline epoxidecarbon nanotube composites

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Abstract

Chemical surface oxidation of carbon nanotubes was employed to modify the interfaces between liquid crystalline epoxide (LCE) molecules and carbon nanotubes (CNs). Polar functional groups are formed on the surfaces of the carbon nanotubes as a result of the treatment. The thermotropic behavior of the nematic liquid crystalline (LC) phase in liquid crystalline epoxidecarbon nanotube (LCE–CN) composites has been examined using polarized optical microscopy. The LC phase in the LCE–surface oxidized CN composite evolves at a lower temperature compared to that for LCE–CN, due to polar interactions. The mechanical properties of LCE–CN composites tend to increase with increasing CN content. The electrical conductivity of LCE–CN composites was found to increases dramatically compared to that of pristine LCE resin, up to 5 wt% CN loading, and then increase linearly with increasing CN content at high CN loadings. An investigation of the thermal properties of LCE–CNs in relation to the surface treatment of CNs was also undertaken. Surface oxidation of CNs was found to improve the mechanical durability and thermal stability of LCE–CN composites.

Graphical abstract: A study on the effect of surface treatment of carbon nanotubes for liquid crystalline epoxide–carbon nanotube composites

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Publication details

The article was received on 12 Dec 2002, accepted on 16 Jan 2003 and first published on 10 Feb 2003


Article type: Paper
DOI: 10.1039/B212190E
Citation: J. Mater. Chem., 2003,13, 676-681
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    A study on the effect of surface treatment of carbon nanotubes for liquid crystalline epoxidecarbon nanotube composites

    J. Jang, J. Bae and S. Yoon, J. Mater. Chem., 2003, 13, 676
    DOI: 10.1039/B212190E

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