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Materials and Structures

, Volume 45, Issue 6, pp 803–816 | Cite as

The significance of carbon nanotubes on styrene butadiene rubber (SBR) and SBR modified mortar

  • Eslam M. Soliman
  • Usama F. Kandil
  • Mahmoud M. Reda TahaEmail author
Original Article

Abstract

A New approach is introduced to incorporate multi-walled carbon nanotubes (MWCNTs) in cementitious materials. The MWCNTs are dispersed in styrene butadiene rubber (SBR) matrix before mixing the matrix with cement. Surfactants have been successfully applied to enhance the dispersion and functionalization of MWCNTs in SBR. The significance of using this MWCNTs–SBR nanocomposite on the mechanical characteristics including compressive and tensile strengths and microstructural features of latex modified mortar (LMM) were examined. Subsequently, the significance of the functionalized MWCNTs on surface chemistry, microstructure and thermal stability of SBR were characterized. MWCNTs were found to be a useful additive for enhancing the mechanical response and thermal stability of SBR. MWCNTs–SBR nanocomposite was observed to be able to bridge micro-cracks in the LMM which helped enhancing its mechanical properties. The ability of MWCNTs to enhance the mechanical response of SBR polymer matrix might be attributed to chemical bond that functionalized MWCNTs can establish with the SBR polymer matrix. The enhanced MWCNTs–SBR nanocomposite gave rise to improved microstructural features of the LMM. Microstructural investigations showed MWCNTs were well dispersed in and bonded to the SBR matrix.

Keywords

Surfactant Carbon nanotubes Latex modified concrete Styrene butadiene rubber Functionalization 

Notes

Acknowledgments

The financial support by Defence Threat Reduction Agency (DTRA) Grant # HDTRA1-07-1-0036 on using carbon nanotubes for blast resistant polymer composites is greatly appreciated. Funding to the second author by Science and Technology Development Fund (STDF) for US-Egypt junior researcher program is greatly appreciated. Recent funding by NSF US-Egypt Cooperative Research program to the authors Award # 1103601 is also acknowledged.

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Copyright information

© RILEM 2011

Authors and Affiliations

  • Eslam M. Soliman
    • 1
  • Usama F. Kandil
    • 2
  • Mahmoud M. Reda Taha
    • 1
    Email author
  1. 1.Department of Civil EngineeringUniversity of New MexicoAlbuquerqueUSA
  2. 2.Egyptian Petroleum Research InstituteCairoEgypt

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