Evaluation of a rapid and long-effective pickling method for iron rust removal on metallic surfaces using carboxylic acid-based polymers Article uri icon


  • This paper reports an alternative pickling method for rust removal on metallic surfaces using poly(acrylic acid) and poly(acrylic acid-co-itaconic acid). Fourier transform infrared spectroscopy (FTIR), and nuclear magnetic resonance (NMR), thermogravimetry (TGA), static light scattering (SLS), and scanning electron microscopy (SEM) were performed to determine polymer and copolymers formation, thermal properties, molecular weights, and the morphological analysis of polymers, respectively. Through an experimental design, polymers’ response was determined in terms of the synthesis parameters. It was observed that both the initiator and the monomers’ molar ratio significantly affect the value of the polymers’ molecular weight. In contrast, for the rust removal, only the initiator had influence. The rust removal process was carried out by the carboxylic acid groups’ adhesion properties, which interacted with the oxidized plates’ polar hydroxyl groups. This method provides an effective and environmentally friendly way to rust removal on metallic surfaces compared with traditional. © 2021, The Polymer Society, Taipei.

publication date

  • 2021-01-01