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

Cited 93 time in Web of Science Cited 111 time in Scopus
Authors
Jang, Jyongsik; Bae, Joonwon; Yoon, Seong-Ho
Issue Date
2003-02-10
Publisher
The Royal Society of Chemistry
Citation
J. Mater. Chem., 2003, 13, 676–681
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 epoxide–carbon 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.
ISSN
0959-9428
Language
English
URI
https://hdl.handle.net/10371/48980
DOI
https://doi.org/10.1039/b212190e
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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