Corrosion behavior of PANI/Epoxy/nano SnO2 polymeric nanocomposite coated stainless steel in 3.5 wt% NaCl


ZOR S. , Ilmieva N.

POLYMER COMPOSITES, cilt.39, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 39
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1002/pc.24729
  • Dergi Adı: POLYMER COMPOSITES

Özet

In this study, polyaniline (PANI) nanocomposites containing metal oxide nanoparticles such as SnO2 with different ratios (0.1, 0.25, 0.5, and 1.0 g) were successfully synthesized by in-situ polymerization for improving the corrosion efficiency of PANI. The synthesized polymeric nanocomposites have been characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), thermal gravimetric analysis, and differential scanning calorimetry analysis techniques. Furthermore in order to, enhance the mechanical and barrier properties of PANI matrix, PANI nanocomposites in the presence of metal oxide nanoparticles were mixed with epoxy resin such as polyvinyl butyral and applied as additives in the PANI matrix. PANI/epoxy/metal oxide polymeric nanocomposites were prepared as a thin layer coating and applied on polished AISI 304 stainless steel substrates. The corrosion protection efficiency of the freshly prepared SnO2 containing PANI nanocomposites were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy in 3.5 wt%. NaCl solution. The surface morphology and the structure of the film were evaluated by SEM. Finally, the obtained results revealed that PANI/epoxy/SnO2 metal oxide nanocomposites coatings provided a significant protection against corrosive environment. POLYM. COMPOS., 39:E2415-E2425, 2018. (c) 2018 Society of Plastics Engineers