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Journal of Composite Materials
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0021998309345313v1
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3-Aminopropyltriethoxysilane Effect on Thermal and Mechanical Properties of Multi-walled Carbon Nanotubes Reinforced Epoxy Composites

Jeong Tai Kim

Department of Architectural Engineering, Kyung Hee University, Yongin, Republic of Korea 446-701

Hee-Cheul Kim

Department of Architectural Engineering, Kyung Hee University, Yongin, Republic of Korea 446-701

Sun-Kuk Kim

Department of Architectural Engineering, Kyung Hee University, Yongin, Republic of Korea 446-701

John Kathi

Department of Architectural Engineering, Kyung Hee University, Yongin, Republic of Korea 446-701, drjohnkathi{at}yahoo.com

Kyong-Yop Rhee

Department of Mechanical Engineering, Kyung Hee University Yongin, Republic of Korea 446-701

Diglycidyl ether of bisphenol A nanocomposites with unmodified multi-walled carbon nanotubes (u-MWCNTs) and silanized multi-walled carbon nanotubes (si-MWCNTs) were prepared by cast molding method. The effects of 3-aminopropyltriethoxysilane functionalization of MWCNTs on the thermal and mechanical properties of the nanocomposites were examined. The nanocomposites were characterized by thermogravimetric analysis, dynamic mechanical thermal analysis, and flexural testing. The results showed that epoxy composites based on si-MWCNTs showed better thermal stability, glass transition temperature, and flexural properties than the composites based on u-MWCNTs. These results prove the effect of silane functionalization on the interfacial adhesion between epoxy and MWCNTs. This was further confirmed by morphology study of fractured surfaces of nanocomposites by scanning electron microscopy.

Key Words: multi-walled carbon nanotubes • nanocomposites • epoxy • mechanical properties • thermal properties.

This version was published on October 1, 2009

Journal of Composite Materials, Vol. 43, No. 22, 2533-2541 (2009)
DOI: 10.1177/0021998309345313
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