Physical properties of phenol-anchored multiwall carbon nanotube/epoxy nanocomposite |
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Authors: | A M Shanmugharaj Won Seok Choi and Sung Hun Ryu |
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Affiliation: | (1) Department of Chemical Engineering, College of Engineering, Green Energy Center, Kyung Hee University, Kyunggi-Do, Yongin, 499-701, South Korea; |
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Abstract: | Surface functionalization of multiwall carbon nanotubes (MWCNTs) was carried out by introducing a ylide group containing anchored
phenol structures. Epoxy nanocomposites filled with modified and pristine carbon nanotubes were prepared, and their mechanical,
electrical, and thermal properties were evaluated. Mechanical properties such as tensile strengths and Young’s moduli of the
epoxy nanocomposites increased significantly with the addition of the modified MWCNTs compared to the pristine MWCNTs, due
to the strong interaction between the modified MWCNTs and the epoxy matrix. Scanning electron microscopy of the fractured
epoxy systems revealed that the functionalized MWCNTs were finely dispersed in the matrix, as opposed to the pristine carbon
nanotubes. The epoxy/functionalized MWCNT nanocomposite had a lower surface electrical resistance than the epoxy/pristine
MWCNT nanocomposite, confirming the effect of functionalization. |
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