Effects of functionalized MWNTs with GMA on the properties of PMMA nanocomposites

✍ Scribed by Yaping Zheng; Jiaoxia Zhang; Yang Xiaodong; Weiwei Chen; Rumin Wang

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 243 KB
• Volume: 112
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.29303

✦ Synopsis

Abstract

The acid modification of multiwall carbon nanotubes (MWNTs) was performed by an HNO~3~/H~2~SO~4~ 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 CC on the surface that participated in the polymerization of MMA. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009