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Preparation and characterization emulsion of PANI-TiO2 nanocomposite and its application as anticorrosive coating

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Published/Copyright: January 24, 2015
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Journal of Polymer Engineering
From the journal Journal of Polymer Engineering Volume 35 Issue 6

Abstract

Emulsion nanoparticles of polyaniline (PANI) were synthesized in the aqueous media by using hydroxylpropylcellulose (HPC) as a stabilizer and ammonium persulfate as an oxidant in the presence of TiO2 with nanometer size. New poly(vinyl acetate) (PVAc) coating over carbon steel was prepared by addition of emulsion nanoparticles in different concentrations (1%, 2% and 1.5%) in PVAc as the major matrix. The Tafel plot records were used for the definition of potential and corrosion current (Icorr). Nanoparticles were characterized and compared by X-ray diffraction (XRD), thermal gravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). By adding TiO2, the thermal stability of the nanocomposite increased. A small size of colloidal particles prevented the precipitation of conducting polymer particles and led to better dispersion of nanocomposites in the matrix of the PVAc binder; therefore, the paint was homogeneous and anticorrosion properties of the coating increased. According to the results, 1.5% of PANI-TiO2 nanocomposite in PVAc has a much lower Icorr in NaCl aqueous solution and 2% of PANI-TiO2 nanocomposite in PVAc has the best corrosion protection in HCl.

Keywords: corrosion; emulsion; polyaniline; stabilizer
Corresponding author: Hossein Eisazadeh, Department of Chemical Engineering, Babol University of Technology, P.O. Box 484, Babol, Iran, e-mail:

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Received: 2014-9-20
Accepted: 2014-12-16
Published Online: 2015-1-24
Published in Print: 2015-8-1

©2015 by De Gruyter

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https://doi.org/10.1515/polyeng-2014-0272
Keywords for this article
corrosion; emulsion; polyaniline; stabilizer

Articles in the same Issue

  1. Frontmatter
  2. Original articles
  3. Preparation and application of fluorinated-siloxane protective surface coating material for stone inscriptions
  4. The effect of the preparation process on the swelling behavior of silk fibroin-polyurethane composite hydrogels using a full factorial experimental design
  5. Synthesis of cashew Mannich polyol via a three step continuous route and development of PU rigid foams with mechanical, thermal and fire studies
  6. Effect of chemical treatment on the mechanical and water absorption properties of bagasse fiber-reinforced epoxy composites
  7. Environmentally degradable sago starch filled low-density polyethylene
  8. The effect of hybrid nanoparticle with silica sol as the supporter on the crystallization behavior and mechanical properties of isotactic polypropylene
  9. Towards novel wound dressings: antibacterial properties of zinc oxide nanoparticles and electrospun fiber mats of zinc oxide nanoparticle/poly(vinyl alcohol) hybrids
  10. Nanofiber formation in the presence of an external magnetic field in electrospinning
  11. Preparation and characterization emulsion of PANI-TiO2 nanocomposite and its application as anticorrosive coating
  12. The effect of the geometry of extrusion head flow channels on the adiabatic extrusion of low density polyethylene
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