Advanced synthesis and multifaceted characterization of a 4,4-diaminodiphenylmethane-melamine-formaldehyde terpolymer: anti-corrosion performance and antimicrobial potential in 1 M hydrochloric acid
Herein, a 4,4-diaminodiphenylmethane-melamine-formaldehyde (DMF) terpolymer was synthesized and characterized to investigate its anti-corrosion properties for mild steel in a 1 M hydrochloric acid electrolyte. The DMF terpolymer produced through condensation polymerization was characterized using FTIR, <sup>1</sup>H NMR, <sup>13</sup>C NMR, and gel permeation chromatography. Electrochemical tests showed that it achieved 94% inhibition efficiency at 100 ppm, functioning as a mixed-kind inhibitory agent. The adsorption phenomenon conformed to the paradigms delineated by the Langmuir adsorption isotherm, indicating strong binding through physical and chemical interactions. AFM confirmed the creation of a protective barrier on the steel substrate, while DFT studies supported its molecular adhesion. Additionally, the terpolymer exhibited antimicrobial activity against <i>Staphylococcus aureus</i>, <i>Pseudomonas aeruginosa</i>, and <i>Bacillus subtilis</i>.
Authors
- Anjaneyulu Bendi (ORCID: https://orcid.org/0000-0002-2538-507X)
- Neera Raghav
- N. Mujafarkani
- Bindu Mangla (ORCID: https://orcid.org/0000-0002-1060-7514)
- Priya Vashishth (ORCID: https://orcid.org/0000-0003-3551-3925)
- Rashmi Sehrawat
- A. Jafar Ahamed (ORCID: https://orcid.org/0000-0003-1048-8292)
Institutions
- Presidency University (IN)
- Kurukshetra University (IN)
- Bharathidasan University (IN)
- J.C. Bose University of Science & Technology, YMCA (IN)
Publication Details
- Journal
- RSC Advances
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5ra01095k
- Citations
- 2
- Primary Topic
- Corrosion Behavior and Inhibition
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- Council of Scientific and Industrial Research, India