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Journal of Nanomaterials
Volume 2008, Article ID 642036, 5 pages
Research Article

Mechanical and Thermal Properties of Polymethyl Methacrylate-BN Nanotube Composites

1International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
2Innovation Research Institute, Teijin Ltd., 2-1, Hinode-cho, Iwakuni, Yamaguchi 740-8511, Japan

Received 23 July 2008; Revised 18 October 2008; Accepted 6 November 2008

Academic Editor: Gong-Ru Lin

Copyright © 2008 C. Y. Zhi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Polymethyl methacrylate (PMMA)-BN nanotube (BNNT) composites were fabricated and their mechanical and thermal properties were analyzed. Using a 1 wt.% BNNTs fraction in a polymer, the elastic modulus of PMMA was increased up to 19%. In addition, thermal stability and glass transition temperature of PMMA were also positively affected. The thermal conductivity of PMMA with BNNT additions increased three times. The resultant BNNT-PMMA composites possess the high electrical breakover voltages. Thus our studies clearly indicate that BNNTs are promising nanofillers for improvement of mechanical and thermal conductivity of dielectric polymers under preservation of their electrical insulation.