Effective amino-functionalization of carbon nanotubes for reinforcing epoxy polymer composites
Wang, Shiren; Liang, Zhiyong; Liu, Tina; Wang, Ben; Zhang, Chuck; Wang, Shiren; Florida Advanced Center for Composite Technologies, Department of Industrial and Manufacturing Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL32310, USA; Liang, Zhiyong; Florida Advanced Center for Composite Technologies, Department of Industrial and Manufacturing Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL32310, USA; Liu, Tina; Department of Chemical Engineering, University of British Columbia, Vancouver, Canada; Wang, Ben; Florida Advanced Center for Composite Technologies, Department of Industrial and Manufacturing Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL32310, USA; Zhang, Chuck; Florida Advanced Center for Composite Technologies, Department of Industrial and Manufacturing Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL32310, USA
Журнал:
Nanotechnology
Дата:
2006-03-28
Аннотация:
An effective functionalization method was investigated to take full advantage of the exceptional performance of both carbon nanotubes and epoxy polymer for composite application. Epoxy polymer curing agent, EPI-W, was grafted to the single-walled carbon nanotubes through diazotization. Fourier transformed infrared spectroscopy, Raman spectroscopy, differential scanning calorimetry, dynamical mechanical analysis and thermo-gravimetric analysis were performed to characterize the functionalization effect. The degree of functionalization was estimated to be 1 in 50 carbons in the nanotube framework. The elastic modulus of the nanocomposite was enhanced 24.6% with only 0.5 wt% loading of functionalized carbon nanotubes, in contrast to the 3.2% increase of un-functionalized carbon nanotube reinforced composite. This significant improvement suggested an effective way to realize an industrial application of nanotubes reinforcing epoxy composite.
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