We report a 40% improvement of the thermal conductivity of graphite nanoplatelets–epoxy composites by chemical functionalization of graphite nanoplatelets utilizing nitric acid treatment, which also serves to enhance the spreadability of the material. FTIR and Raman spectroscopy confirmed the presence of a variety of oxygen functional groups at the edges and basal plane of the functionalized graphite nanoplatelets, which contributed to improved interaction with the polymer matrix. A comparative statistical analysis of the particle size distributions in pristine and functionalized graphite nanoplatelets based on scanning electron microscopy showed an increasing degree of exfoliation of the functionalized material. We compare the performance of the functionalized graphite nanoplatelets and carbon nanotubes as fillers in the polymer matrix and discuss the prospects for utilization of graphite nanoplatelets-based thermal interface materials in electronic packaging.
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June 2011
Carbon Nanotubes
Oxidized Graphite Nanoplatelets as an Improved Filler for Thermally Conducting Epoxy-Matrix Composites
Xiaobo Sun,
Xiaobo Sun
Center for Nanoscale Science and Engineering, Departments of Chemistry and Chemical and Environmental Engineering,
University of California-Riverside
, Riverside, CA 92521
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Aiping Yu,
Aiping Yu
Department of Chemical Engineering,
University of Waterloo
, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada
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Palanisamy Ramesh,
Palanisamy Ramesh
Center for Nanoscale Science and Engineering, Departments of Chemistry and Chemical and Environmental Engineering,
University of California-Riverside
, Riverside, CA 92521
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Elena Bekyarova,
Elena Bekyarova
Center for Nanoscale Science and Engineering, Departments of Chemistry and Chemical and Environmental Engineering,
University of California-Riverside
, Riverside, CA 92521
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Mikhail E. Itkis,
Mikhail E. Itkis
Center for Nanoscale Science and Engineering, Departments of Chemistry and Chemical and Environmental Engineering,
University of California-Riverside
, Riverside, CA 92521
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Robert C. Haddon
Robert C. Haddon
Center for Nanoscale Science and Engineering, Departments of Chemistry and Chemical and Environmental Engineering,
e-mail: haddon@ucr.edu
University of California-Riverside
, Riverside, CA 92521
Search for other works by this author on:
Xiaobo Sun
Center for Nanoscale Science and Engineering, Departments of Chemistry and Chemical and Environmental Engineering,
University of California-Riverside
, Riverside, CA 92521
Aiping Yu
Department of Chemical Engineering,
University of Waterloo
, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada
Palanisamy Ramesh
Center for Nanoscale Science and Engineering, Departments of Chemistry and Chemical and Environmental Engineering,
University of California-Riverside
, Riverside, CA 92521
Elena Bekyarova
Center for Nanoscale Science and Engineering, Departments of Chemistry and Chemical and Environmental Engineering,
University of California-Riverside
, Riverside, CA 92521
Mikhail E. Itkis
Center for Nanoscale Science and Engineering, Departments of Chemistry and Chemical and Environmental Engineering,
University of California-Riverside
, Riverside, CA 92521
Robert C. Haddon
Center for Nanoscale Science and Engineering, Departments of Chemistry and Chemical and Environmental Engineering,
University of California-Riverside
, Riverside, CA 92521e-mail: haddon@ucr.edu
J. Electron. Packag. Jun 2011, 133(2): 020905 (6 pages)
Published Online: June 7, 2011
Article history
Received:
April 4, 2010
Revised:
March 23, 2011
Online:
June 7, 2011
Published:
June 7, 2011
Citation
Sun, X., Yu, A., Ramesh, P., Bekyarova, E., Itkis, M. E., and Haddon, R. C. (June 7, 2011). "Oxidized Graphite Nanoplatelets as an Improved Filler for Thermally Conducting Epoxy-Matrix Composites." ASME. J. Electron. Packag. June 2011; 133(2): 020905. https://doi.org/10.1115/1.4003988
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