Effect of modification on thermal stabilities and thermal degradation kinetics of poly(buthylmethacrylate)/multi-walled carbon nanotube nanocomposites
Özet
Modified multi-walled carbon nanotubes (MWCNTs) were prepared from commercially
purchased MWCNTs with different chemical reactions. Nanocomposites were synthesised by
the solvent casting method. The effects of functional groups, filling ratios and surfactants on
thermal properties of nanocomposites were investigated. The structural, thermal and
morphological properties of MWCNT and nanocomposites were investigated using Fourier
transform infrared spectrophotometer, Brunauer–Emmett–Teller surface area measuring
device, thermogravimetric analysis, differential scanning calorimetry and scanning electron
microscopy. The novel increases in the thermal properties of poly(butylmethacrylate) (PBMA)
were observed by adding MWCNT samples into a PBMA matrix. Tg values of
nanocomposites were higher than those of PBMA films. The data obtained from the
thermograms of nanocomposites at different heating rates were analysed with Kissinger,
FWO and Friedman equations. The activation energies of the nanocomposites were higher
than those of PBMA films.
