Cargando…
Synthesis of TiO(2) nanogel composite for highly efficient self-healing epoxy coating
INTRODUCTION: Organic coatings are the most effective and facile methods of protecting steel against corrosion, which shields it from direct contact with oxygen and moisture. However, they are inherently defective and susceptible to damage, which allows the penetration of the corrosive media into th...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9811329/ https://www.ncbi.nlm.nih.gov/pubmed/36585104 http://dx.doi.org/10.1016/j.jare.2022.02.008 |
_version_ | 1784863510581215232 |
---|---|
author | Rezvani Ghomi, Erfan Nouri Khorasani, Saied Koochaki, Mohammad Sadegh Dinari, Mohammad Ataei, Shahla Enayati, Mohammad Hossein Das, Oisik Esmaeely Neisiany, Rasoul |
author_facet | Rezvani Ghomi, Erfan Nouri Khorasani, Saied Koochaki, Mohammad Sadegh Dinari, Mohammad Ataei, Shahla Enayati, Mohammad Hossein Das, Oisik Esmaeely Neisiany, Rasoul |
author_sort | Rezvani Ghomi, Erfan |
collection | PubMed |
description | INTRODUCTION: Organic coatings are the most effective and facile methods of protecting steel against corrosion, which shields it from direct contact with oxygen and moisture. However, they are inherently defective and susceptible to damage, which allows the penetration of the corrosive media into the underlying substrates. Self-healing coatings were developed to address this shortcoming. OBJECTIVE: The current research aims to develop a coating with superior self-healing ability via embedment of titanium dioxide (TiO(2)) nanogel composite (NC) in a commercial epoxy. METHODS: The TiO(2) NC was prepared by efficient dispersion of TiO(2) nanoparticles in copolymer gel of acrylamide (AAm) and 2-acrylamido-2-methyl propane sulfonic acid (AMPS) with the help of 3-(trimethoxysilyl) propyl methacrylate (MPS). The chemical structure, morphology, and thermal properties of the modified and functionalized nanoparticles were assessed by infrared spectroscopy, electron microscopy, X-ray diffraction, and thermogravimetric analysis, respectively. In addition, TiO(2) nanoparticles, nano-TiO(2) functionalized monomer (NTFM), and NTFM/AAm/AMPS in different weight percentages were incorporated into epoxy resin to prepare a self-healing coating. RESULTS: The results confirmed the successful fabrication of the NC. In addition, the incorporation of 1 wt% NTFM/AAm/AMPS led to homogenous dispersion, enhanced anti-corrosive and self-healing performance with the healing efficiencies of 100% and 98%, which were determined by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization methods, respectively. CONCLUSION: The prepared NC was sensitive towards salt concentration, pH, which aids the quick reaction of the TiO(2) NC to corrosive ions, once the cracks occur. In addition, this is a unique feature compared to the other self-healing mechanisms, especially, the encapsulation of healing agents, which can be effective as long as the healing agent is present. |
format | Online Article Text |
id | pubmed-9811329 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-98113292023-01-05 Synthesis of TiO(2) nanogel composite for highly efficient self-healing epoxy coating Rezvani Ghomi, Erfan Nouri Khorasani, Saied Koochaki, Mohammad Sadegh Dinari, Mohammad Ataei, Shahla Enayati, Mohammad Hossein Das, Oisik Esmaeely Neisiany, Rasoul J Adv Res Original Article INTRODUCTION: Organic coatings are the most effective and facile methods of protecting steel against corrosion, which shields it from direct contact with oxygen and moisture. However, they are inherently defective and susceptible to damage, which allows the penetration of the corrosive media into the underlying substrates. Self-healing coatings were developed to address this shortcoming. OBJECTIVE: The current research aims to develop a coating with superior self-healing ability via embedment of titanium dioxide (TiO(2)) nanogel composite (NC) in a commercial epoxy. METHODS: The TiO(2) NC was prepared by efficient dispersion of TiO(2) nanoparticles in copolymer gel of acrylamide (AAm) and 2-acrylamido-2-methyl propane sulfonic acid (AMPS) with the help of 3-(trimethoxysilyl) propyl methacrylate (MPS). The chemical structure, morphology, and thermal properties of the modified and functionalized nanoparticles were assessed by infrared spectroscopy, electron microscopy, X-ray diffraction, and thermogravimetric analysis, respectively. In addition, TiO(2) nanoparticles, nano-TiO(2) functionalized monomer (NTFM), and NTFM/AAm/AMPS in different weight percentages were incorporated into epoxy resin to prepare a self-healing coating. RESULTS: The results confirmed the successful fabrication of the NC. In addition, the incorporation of 1 wt% NTFM/AAm/AMPS led to homogenous dispersion, enhanced anti-corrosive and self-healing performance with the healing efficiencies of 100% and 98%, which were determined by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization methods, respectively. CONCLUSION: The prepared NC was sensitive towards salt concentration, pH, which aids the quick reaction of the TiO(2) NC to corrosive ions, once the cracks occur. In addition, this is a unique feature compared to the other self-healing mechanisms, especially, the encapsulation of healing agents, which can be effective as long as the healing agent is present. Elsevier 2022-02-19 /pmc/articles/PMC9811329/ /pubmed/36585104 http://dx.doi.org/10.1016/j.jare.2022.02.008 Text en © 2022 The Authors. Published by Elsevier B.V. on behalf of Cairo University. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Original Article Rezvani Ghomi, Erfan Nouri Khorasani, Saied Koochaki, Mohammad Sadegh Dinari, Mohammad Ataei, Shahla Enayati, Mohammad Hossein Das, Oisik Esmaeely Neisiany, Rasoul Synthesis of TiO(2) nanogel composite for highly efficient self-healing epoxy coating |
title | Synthesis of TiO(2) nanogel composite for highly efficient self-healing epoxy coating |
title_full | Synthesis of TiO(2) nanogel composite for highly efficient self-healing epoxy coating |
title_fullStr | Synthesis of TiO(2) nanogel composite for highly efficient self-healing epoxy coating |
title_full_unstemmed | Synthesis of TiO(2) nanogel composite for highly efficient self-healing epoxy coating |
title_short | Synthesis of TiO(2) nanogel composite for highly efficient self-healing epoxy coating |
title_sort | synthesis of tio(2) nanogel composite for highly efficient self-healing epoxy coating |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9811329/ https://www.ncbi.nlm.nih.gov/pubmed/36585104 http://dx.doi.org/10.1016/j.jare.2022.02.008 |
work_keys_str_mv | AT rezvanighomierfan synthesisoftio2nanogelcompositeforhighlyefficientselfhealingepoxycoating AT nourikhorasanisaied synthesisoftio2nanogelcompositeforhighlyefficientselfhealingepoxycoating AT koochakimohammadsadegh synthesisoftio2nanogelcompositeforhighlyefficientselfhealingepoxycoating AT dinarimohammad synthesisoftio2nanogelcompositeforhighlyefficientselfhealingepoxycoating AT ataeishahla synthesisoftio2nanogelcompositeforhighlyefficientselfhealingepoxycoating AT enayatimohammadhossein synthesisoftio2nanogelcompositeforhighlyefficientselfhealingepoxycoating AT dasoisik synthesisoftio2nanogelcompositeforhighlyefficientselfhealingepoxycoating AT esmaeelyneisianyrasoul synthesisoftio2nanogelcompositeforhighlyefficientselfhealingepoxycoating |