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Polymers

Efficient Corrosion Inhibition Strategies for Metal Infrastructure

Strategic Insights

— 1 min read

A new study published in the Journal of Engineering evaluates the efficacy of synthetic and natural polymers as corrosion inhibitors for metal infrastructure in acidic environments. The research, conducted by a team of scientists from Ibn Tofail University, Morocco, concludes that both polymers exhibit exceptional inhibition efficiencies, surpassing conventional inhibitors by up to 10%. The findings have significant implications for industries relying on metal infrastructure, such as construction, energy, and manufacturing.

Key Takeaways:

  • The study finds that synthetic polymer P1 and natural polymer P2 exhibit inhibition efficiencies of 96.0% and 97.2%, respectively, at a concentration of 250 ppm.
  • Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) results confirm the excellent inhibition performance of both polymers.
  • The adsorption of inhibitors on the metal surface follows the Langmuir isotherm, suggesting monolayer formation and strong interaction between the inhibitor molecules and the steel surface.
  • Scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) analyses further support the formation of a uniform, adherent protective film.
  • Compared to conventional inhibitors, which often reach only 80-90% efficiency, the new polymers show superior performance and strong potential as cost-effective, eco-friendly corrosion inhibitors.
  • The research highlights the need for efficient and sustainable protection strategies to mitigate corrosion threats to metal infrastructure.

Statistics:

  • 96.0% inhibition efficiency for synthetic polymer P1 at 250 ppm concentration
  • 97.2% inhibition efficiency for natural polymer P2 at 250 ppm concentration
  • Charge transfer resistance increased by 881.1 Omega.cm2 and 1229 Omega.cm2 for P1 and P2, respectively
  • Corrosion current density decreased by 36.2 and 24.9 mu A. cm-2 for P1 and P2, respectively
  • Corrosion potential shift remained below 85 mV for both polymers

Sources:

  • Comparative Study of Natural and Synthetic Polymers As Corrosion Inhibitors for Mild Steel In 1.0 M Hcl Solution. Colloids and Surfaces A-physicochemical and Engineering Aspects, 2025;723.
  • Ibn Tofail University, Faculty of Sciences, Lab Organ Chem Catalysis & Environm, Pob 133, Kenitra 14000, Morocco.

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