Blendas de PC/ABS reforçadas com nanotubos de carbono crescidos por DQV em argila esmectita modificada

Abstract

This study proposes the chemical vapor composition (DQV) as methodology for NTC production using the decomposition of ferrocene in a smectite clay with modified surface. Ferrocene acted as a catalyst and carbon source. The modificaition in clay aims the increasing of the clay surface area. This porous surface, in turn, serves as an active site for the growth of NTCs. To confirm the surface modification, natural and modified clay were evaluated by X-ray diffraction (XRD), infrared with Fourier transform (FTIR) and surface area. The hybrid charge/clay CNTs had morphology available for scanning and transmission electron microscopy and Raman spectroscopy. Subsequently, this hybrid load was incorporated into the PC/ABS blend in 0.01 and 0.5 wt% concentrations. The effect of this addition was evaluated through the mechanical behavior of the nanocomposites in the impact and impact tests. It was possible to observe by DRX and FTIR that the acid change was effective without destroying the selected clay filters. There was an increase in porosity and surface area and a reduction in the average pore size. When Raman spectra was analyzed its were observe signs of the presence of NTCs in 2: 1MMT and 10MMT samples, but the repeat of this assay is necessary. Likewise, in scanning and transmission microscopies it was possible to observe the presence of NTCs in some samples. Considering the evaluation of the load addition, it was observed that the concentration of 0.05 wt% in mass of hybrid filler is more efficient in improvement the impact resistance and the concentration of 0.01 wt% was more effective in improving the properties of traction. Keywords: chemical vapor deposition; polymeric nanocomposite; esmectites; carbon nanotubes; Polycarbonate; Acrylonitrile-butadiene-styren.