Synthesis, characterization and superior corrosion prevention ability of novel polyaniline-gum rosin composites.

Damage caused by corrosion triggered metallic constructs to be malfunction and collapse, which resulted in financial loss. For this reason corrosion preventing coatings is applied to preserve the worth of industrial assets. Polyaniline (PANI) is one of the members of conducting polymers to use as protective coatings. However, certain co -additives like natural compounds have significantly uplifts the effectiveness of polyaniline (PANI). Herein, the incredible properties of gum rosin (GR) that boost the inhibitory performance of PANI are presented. The PANI patched with GR was synthesized by inverse emulsion polymerization. The UV–Visible and FTIR analysis confirms the synthesis of PANI-gum rosin (PANI-GR) composite, whereas, the thermogram of synthesized composite shows outstanding thermal stability to 533 ° C. SEM analysis reveals a bi-layered morphology with porous PANI layer which is superimposed by fibrous layer of gum rosin. PANI-GR was soluble in numerous common organic solvents, including chloroform, methanol, n-heptane, toluene, DMSO, NMP, and acetone the maximum solubility potential was observed to be 7.8 % (w / v). The corrosion preventing ability of the PANI-GR composite was evaluated through OCP, EIS and Tafel analysis. A significant uplift was found in the OCP potential (E OCP) to −0.38 V which might be due to the existence of a PANI-GR layer with prominent anticorrosive properties. The synthesized PANI-GR composite layer reveals a significant reduction in the corrosion of mild steel surfaces with corrosion efficacy up to 92 % in a diprotic acidic medium. In a nut shell, the potential of PANI-GR composite is demonstrated here in order to resolve problems of PANI, leading to significantly save the country assets. • Ecologically friendly and Novel PANI-GR composite • Superior solubility in common organic solvents • Significant uplift in the OCP potential (E OCP) • Extraordinary corrosion prevention ability up to 92 % [ABSTRACT FROM AUTHOR]