Journal of Materials Science

, Volume 44, Issue 13, pp 3476–3482 | Cite as

Multiwalled carbon nanotubes functionalized with 7-octenyltrichlorosilane and n-octyltrichlorosilane: dispersion in Sylgard®184 silicone and Young’s modulus

  • Laurence Vast
  • Luc Carpentier
  • Fabrice Lallemand
  • Jean-François Colomer
  • Gustaaf Van Tendeloo
  • Antonio Fonseca
  • János B. Nagy
  • Zineb Mekhalif
  • Joseph DelhalleEmail author


Sylgard®184/multiwalled carbon nanotube (MWNT) composites have been prepared by in situ polymerization using purified and functionalized multiwalled carbon nanotubes (f-MWNTs) as fillers. Surface modification of the MWNTs has been carried out by silanization with 7-octenyltrichlorosilane (7OTCS) and n-octyltrichlorosilane (nOTCS). The modification and dispersion of the carbon nanotubes in composites were characterized by X-ray photoelectron spectroscopy (XPS), transmission electron spectroscopy (TEM), and high-resolution transmission electron spectroscopy (HRTEM). Young’s modulus results were derived from indentation testing. It is shown that the terminal-vinyl group of 7OTCS molecules plays an essential role for both the dispersion of the f-MWNTs in the composite and its mechanical properties. At loading as low as 0.2 wt%, the Young’s modulus is shown to increase up to 50%. This is interpreted as resulting from a combination of the good compatibility in the forming silicone matrix of the MWNTs coated with a siloxane network, on the one hand, and the covalent links created between the terminal-vinyl groups and the host matrix in formation, on the other hand.


HRTEM PDMS Silicone Rubber Host Matrix Trichlorosilanes 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This study was supported through BINANOCO project (02/1/5221) of the Walloon Region and the “Belgian National Interuniversity Research Program on quantum size effects in nanostructure materials” (IUAP P5/01). J.-F.·C. is supported by the Belgian FNRS in his capacity as a postdoctoral researcher. The authors are grateful to Dr. F. De Buyl (Dow Corning, Belgium) for supplying Sylgard®184 and to Drs A. Destrée and N. Moreau for providing the raw CNTs used in this study.


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Laurence Vast
    • 1
  • Luc Carpentier
    • 2
  • Fabrice Lallemand
    • 3
  • Jean-François Colomer
    • 4
  • Gustaaf Van Tendeloo
    • 4
  • Antonio Fonseca
    • 1
  • János B. Nagy
    • 1
  • Zineb Mekhalif
    • 1
  • Joseph Delhalle
    • 1
    Email author
  1. 1.Laboratoire de Chimie et d’Electrochimie des SurfacesFacultés Universitaires Notre-Dame de la PaixNamurBelgium
  2. 2.Microanalyse des Surfaces (MAS), DMAFemto STBesançon CedexFrance
  3. 3.Institut UTINAM UMR-Université de Franche Comté/CNRS-6213BesançonFrance
  4. 4.EMAUniversity of AntwerpAntwerpBelgium

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