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Park, Young-Bin
Functional Intelligent Materials Lab (FIMLab)
Research Interests
  • Composites

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Single-walled carbon nanotube buckypaper and mesophase pitch carbon/carbon composites

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Title
Single-walled carbon nanotube buckypaper and mesophase pitch carbon/carbon composites
Author
Park, Jin GyuYun, Nam GyunPark, Young BinLiang, RichardLumata, LloydBrooks, James S.Zhang, ChuckWang, Ben
Keywords
Buckypaper; Carbonization process; Contact barrier; Electrical conductivity; matrix; Mechanical strain; Mesophase pitch; Process cycles; Raman shift; Temperature dependence
Issue Date
201012
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CARBON, v.48, no.15, pp.4276 - 4282
Abstract
Carbon/carbon composites consisting of single-walled carbon nanotube (SWCNT) buckypaper (BP) and mesophase pitch resin have been produced through impregnation of BP with pitch using toluene as a solvent. Drying, stabilization and carbonization processes were performed sequentially, and repeated to increase the pitch content. Voids in the carbon/carbon composite samples decreased with increasing impregnation process cycles. Electrical conductivity and density of the composites increased with carbonization by two to three times that of pristine BP. These results indicate that discontinuity and intertube contact barriers of SWCNTs in the BP are partially overcome by the carbonization process of pitch. The temperature dependence of the Raman shift shows that mechanical strain is increased since carbonized pitch matrix surrounds the nanotubes.
URI
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DOI
http://dx.doi.org/10.1016/j.carbon.2010.07.037
ISSN
0008-6223
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