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Effects of functionalized MWNTs with GMA on the properties of PMMA nanocomposites
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AbstractThe acid modification of multiwall carbon nanotubes (MWNTs) was performed by an HNO3/H2SO4 solution. The glycidyl methacrylate (GMA) undergoing an opening‐ring was grafted onto the surface of acid‐modified MWNTs. The surface properties of MWNTs were investigated by Fourier transform infrared spectrometer (FTIR), Raman spectra, transmission electron microscopy (TEM), X‐ray diffraction, and thermogravimeric analysis. Then the MWNTs/ poly(methyl methacrylate) (PMMA) nanocomposites were prepared by in situ polymerization. The tribological and dielectric properties of nanocomposites were studied. As a result, GMA was grafted on the surface of MWNTs. The tribological and dielectric properties of MWNTs/ PMMA nanocomposites were improved as the content of the surface‐modified MWNT increased. The marked improvement in tribological and dielectric properties were attributed to the good dispersion of MWNTs that were bonded with CC on the surface that participated in the polymerization of MMA. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
Title: Effects of functionalized MWNTs with GMA on the properties of PMMA nanocomposites
Description:
AbstractThe acid modification of multiwall carbon nanotubes (MWNTs) was performed by an HNO3/H2SO4 solution.
The glycidyl methacrylate (GMA) undergoing an opening‐ring was grafted onto the surface of acid‐modified MWNTs.
The surface properties of MWNTs were investigated by Fourier transform infrared spectrometer (FTIR), Raman spectra, transmission electron microscopy (TEM), X‐ray diffraction, and thermogravimeric analysis.
Then the MWNTs/ poly(methyl methacrylate) (PMMA) nanocomposites were prepared by in situ polymerization.
The tribological and dielectric properties of nanocomposites were studied.
As a result, GMA was grafted on the surface of MWNTs.
The tribological and dielectric properties of MWNTs/ PMMA nanocomposites were improved as the content of the surface‐modified MWNT increased.
The marked improvement in tribological and dielectric properties were attributed to the good dispersion of MWNTs that were bonded with CC on the surface that participated in the polymerization of MMA.
© 2009 Wiley Periodicals, Inc.
J Appl Polym Sci, 2009.
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