Corrosion mitigation of mild steel over thicknesses of graphene oxide/polyaniline nanocomposite coatings
Epoxy is frequently employed as a protective coating to inhibit corrosion. Over the years, researchers have focused on improving the barrier properties of epoxy coatings because prolonged exposure to harsh environments may induce corrosive ion permeation. In this regard, polyaniline functionalized g...
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| Format: | Article |
| Language: | English |
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John Wiley & Sons, Inc.
2025
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| Online Access: | http://umpir.ump.edu.my/id/eprint/43958/ http://umpir.ump.edu.my/id/eprint/43958/2/Corrosion%20Mitigation%20of%20Mild%20Steel%20Over%20Thicknesses%20of%20Graphene%20Oxide_Polyaniline%20Nanocomposite%20Coatings.pdf |
| _version_ | 1848826999007608832 |
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| author | Rihashni, Thivagaran Mohd Radzi, Aridi Nurjannah, Salim Siti Maznah, Kabeb Nurul Huda, Abu Bakar |
| author_facet | Rihashni, Thivagaran Mohd Radzi, Aridi Nurjannah, Salim Siti Maznah, Kabeb Nurul Huda, Abu Bakar |
| author_sort | Rihashni, Thivagaran |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | Epoxy is frequently employed as a protective coating to inhibit corrosion. Over the years, researchers have focused on improving the barrier properties of epoxy coatings because prolonged exposure to harsh environments may induce corrosive ion permeation. In this regard, polyaniline functionalized graphene oxide (GO/PANI) nanocomposite is introduced into the epoxy matrix to enhance the barrier performance. GO is first sonicated at 5 h to yield smaller graphene sheet sizes and to ensure uniform suspension. The research reveals that thicker coating with five layers of the nanocomposites (GO/PANI-5) successfully protects mild steel substrates at a corrosion rate (CR) of 0.0037 mm y−1 compared to pure epoxy coating at an equivalent thickness (≈0.016 mm year−1). Detailed investigation of electrochemical impedance spectroscopy (EIS) shows that the GO/PANI-5 coating exhibits higher impedance with four to five orders of magnitude than the pure epoxy and bare mild steel substrate. The significant findings denote that a thicker layer with a smaller GO sheet allows for more barrier characteristics due to stronger adhesion and slower ion diffusion rate. To conclude, incorporating GO/PANI nanocomposites will add more protective values to pure epoxy and provide multifaceted applications regardless of thickness. |
| first_indexed | 2025-11-15T03:53:44Z |
| format | Article |
| id | ump-43958 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:53:44Z |
| publishDate | 2025 |
| publisher | John Wiley & Sons, Inc. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-439582025-03-03T04:24:44Z http://umpir.ump.edu.my/id/eprint/43958/ Corrosion mitigation of mild steel over thicknesses of graphene oxide/polyaniline nanocomposite coatings Rihashni, Thivagaran Mohd Radzi, Aridi Nurjannah, Salim Siti Maznah, Kabeb Nurul Huda, Abu Bakar Q Science (General) TJ Mechanical engineering and machinery Epoxy is frequently employed as a protective coating to inhibit corrosion. Over the years, researchers have focused on improving the barrier properties of epoxy coatings because prolonged exposure to harsh environments may induce corrosive ion permeation. In this regard, polyaniline functionalized graphene oxide (GO/PANI) nanocomposite is introduced into the epoxy matrix to enhance the barrier performance. GO is first sonicated at 5 h to yield smaller graphene sheet sizes and to ensure uniform suspension. The research reveals that thicker coating with five layers of the nanocomposites (GO/PANI-5) successfully protects mild steel substrates at a corrosion rate (CR) of 0.0037 mm y−1 compared to pure epoxy coating at an equivalent thickness (≈0.016 mm year−1). Detailed investigation of electrochemical impedance spectroscopy (EIS) shows that the GO/PANI-5 coating exhibits higher impedance with four to five orders of magnitude than the pure epoxy and bare mild steel substrate. The significant findings denote that a thicker layer with a smaller GO sheet allows for more barrier characteristics due to stronger adhesion and slower ion diffusion rate. To conclude, incorporating GO/PANI nanocomposites will add more protective values to pure epoxy and provide multifaceted applications regardless of thickness. John Wiley & Sons, Inc. 2025 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/43958/2/Corrosion%20Mitigation%20of%20Mild%20Steel%20Over%20Thicknesses%20of%20Graphene%20Oxide_Polyaniline%20Nanocomposite%20Coatings.pdf Rihashni, Thivagaran and Mohd Radzi, Aridi and Nurjannah, Salim and Siti Maznah, Kabeb and Nurul Huda, Abu Bakar (2025) Corrosion mitigation of mild steel over thicknesses of graphene oxide/polyaniline nanocomposite coatings. Macromolecular Symposia, 414 (2300236). pp. 1-6. ISSN 1521-3900. (Published) https://doi.org/10.1002/masy.202300236 https://doi.org/10.1002/masy.202300236 |
| spellingShingle | Q Science (General) TJ Mechanical engineering and machinery Rihashni, Thivagaran Mohd Radzi, Aridi Nurjannah, Salim Siti Maznah, Kabeb Nurul Huda, Abu Bakar Corrosion mitigation of mild steel over thicknesses of graphene oxide/polyaniline nanocomposite coatings |
| title | Corrosion mitigation of mild steel over thicknesses of graphene oxide/polyaniline nanocomposite coatings |
| title_full | Corrosion mitigation of mild steel over thicknesses of graphene oxide/polyaniline nanocomposite coatings |
| title_fullStr | Corrosion mitigation of mild steel over thicknesses of graphene oxide/polyaniline nanocomposite coatings |
| title_full_unstemmed | Corrosion mitigation of mild steel over thicknesses of graphene oxide/polyaniline nanocomposite coatings |
| title_short | Corrosion mitigation of mild steel over thicknesses of graphene oxide/polyaniline nanocomposite coatings |
| title_sort | corrosion mitigation of mild steel over thicknesses of graphene oxide/polyaniline nanocomposite coatings |
| topic | Q Science (General) TJ Mechanical engineering and machinery |
| url | http://umpir.ump.edu.my/id/eprint/43958/ http://umpir.ump.edu.my/id/eprint/43958/ http://umpir.ump.edu.my/id/eprint/43958/ http://umpir.ump.edu.my/id/eprint/43958/2/Corrosion%20Mitigation%20of%20Mild%20Steel%20Over%20Thicknesses%20of%20Graphene%20Oxide_Polyaniline%20Nanocomposite%20Coatings.pdf |