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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...

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Autores principales: Rezvani Ghomi, Erfan, Nouri Khorasani, Saied, Koochaki, Mohammad Sadegh, Dinari, Mohammad, Ataei, Shahla, Enayati, Mohammad Hossein, Das, Oisik, Esmaeely Neisiany, Rasoul
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
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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.
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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
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