Comparison of covalently and noncovalently functionalized carbon nanotubes in epoxy. Academic Article

abstract

• Carbon nanotubes typically require the use of a dispersing or stabilizing agent to prevent significant aggregation during incorporation into a polymer matrix. These additives must be strongly associated, either covalently or physically, to achieve their purpose. In this study, multi-walled carbon nanotubes (MWNTs) were dispersed into an epoxy matrix using polyethylenimine (PEI) as a dispersant that was either covalently attached to the nanotubes or physically mixed to result in only noncovalent interaction. Epoxy composites containing covalently modified MWNTs exhibited greater storage modulus and reduced electrical conductivity.

authors

• Bergbreiter, David
• Grunlan, Jaime

published proceedings

• Macromol Rapid Commun

author list (cited authors)

• Liu, L., Etika, K. C., Liao, K., Hess, L. A., Bergbreiter, D. E., & Grunlan, J. C.

citation count

• 63

complete list of authors

• Liu, Lei||Etika, Krishna C||Liao, Kang-Shyang||Hess, Lance A||Bergbreiter, David E||Grunlan, Jaime C

publication date

• April 2009

publisher

• Wiley  Publisher

published in

• Macromolecular Rapid Communications  Journal

keywords

• Composites
• Conductivity
• Epoxy
• Nanocomposites
• Nanotubes

PubMed Central ID

• 21706651

Digital Object Identifier (DOI)

• 10.1002/marc.200800778

start page

• 627

end page

• 632

volume

• 30

issue

• 8

URL

• http://dx.doi.org/10.1002/marc.200800778