Corrosion barrier properties of PMMA-silica coatings for protection of reinforcing steel

Detalhes bibliográficos
Autor(a) principal: Uvida, Mayara C. [UNESP]
Data de Publicação: 2021
Outros Autores: Trentin, Andressa [UNESP], Harb, Samarah V., Santilli, Celso V. [UNESP], Hammer, Peter [UNESP]
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/241723
Resumo: Corrosion of steel metal structures is the principal cause of failure of reinforced concrete and the absence of preventive maintenance results in financial, social, and environmental implications. To overcome this problem, research efforts are directed toward eco-friendly coatings based on organic-inorganic hybrids developed for effective protection of metal surfaces. PMMA (methyl polymethacrylate)-silica were prepared by polymerization of methyl methacrylate (MMA) and 3-(Trimethoxysilyl) propyl methacrylate (MPTS), using the thermal initiator benzoyl peroxide (BPO) and the sol-gel hydrolytic condensation of tetraethoxysilane (TEOS) and MPTS. Several micrometer thick coatings were deposited on carbon steel by dip-coating. The results of the structural analysis performed by infrared spectroscopy confirmed the formation of PMMA-silica hybrid. The electrochemical impedance spectroscopy measurements in 0.6 mol L-1 NaCl solution showed excellent corrosion resistance of up to 100 GΩ cm2 (low-frequency impedance modulus), with a durability of more than 250 days, while similar corrosion resistance but somewhat lower lifetime was obtained in simulated carbonated and alkaline concrete pore solution.
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spelling Corrosion barrier properties of PMMA-silica coatings for protection of reinforcing steelAnticorrosion coatingOrganic-inorganic hybridReinforcing steelSol-gel processCorrosion of steel metal structures is the principal cause of failure of reinforced concrete and the absence of preventive maintenance results in financial, social, and environmental implications. To overcome this problem, research efforts are directed toward eco-friendly coatings based on organic-inorganic hybrids developed for effective protection of metal surfaces. PMMA (methyl polymethacrylate)-silica were prepared by polymerization of methyl methacrylate (MMA) and 3-(Trimethoxysilyl) propyl methacrylate (MPTS), using the thermal initiator benzoyl peroxide (BPO) and the sol-gel hydrolytic condensation of tetraethoxysilane (TEOS) and MPTS. Several micrometer thick coatings were deposited on carbon steel by dip-coating. The results of the structural analysis performed by infrared spectroscopy confirmed the formation of PMMA-silica hybrid. The electrochemical impedance spectroscopy measurements in 0.6 mol L-1 NaCl solution showed excellent corrosion resistance of up to 100 GΩ cm2 (low-frequency impedance modulus), with a durability of more than 250 days, while similar corrosion resistance but somewhat lower lifetime was obtained in simulated carbonated and alkaline concrete pore solution.São Paulo State University Institute of Chemistry, SPFederal University of São Carlos Materials Engineering Department, SPSão Paulo State University Institute of Chemistry, SPUniversidade Estadual Paulista (UNESP)Universidade Federal de São Carlos (UFSCar)Uvida, Mayara C. [UNESP]Trentin, Andressa [UNESP]Harb, Samarah V.Santilli, Celso V. [UNESP]Hammer, Peter [UNESP]2023-03-01T21:18:25Z2023-03-01T21:18:25Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject518-52721st International Corrosion Congress, ICC INTERCORR WCO 2021, p. 518-527.http://hdl.handle.net/11449/2417232-s2.0-85128022745Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPeng21st International Corrosion Congress, ICC INTERCORR WCO 2021info:eu-repo/semantics/openAccess2023-03-01T21:18:25Zoai:repositorio.unesp.br:11449/241723Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:08:17.011681Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Corrosion barrier properties of PMMA-silica coatings for protection of reinforcing steel
title Corrosion barrier properties of PMMA-silica coatings for protection of reinforcing steel
spellingShingle Corrosion barrier properties of PMMA-silica coatings for protection of reinforcing steel
Uvida, Mayara C. [UNESP]
Anticorrosion coating
Organic-inorganic hybrid
Reinforcing steel
Sol-gel process
title_short Corrosion barrier properties of PMMA-silica coatings for protection of reinforcing steel
title_full Corrosion barrier properties of PMMA-silica coatings for protection of reinforcing steel
title_fullStr Corrosion barrier properties of PMMA-silica coatings for protection of reinforcing steel
title_full_unstemmed Corrosion barrier properties of PMMA-silica coatings for protection of reinforcing steel
title_sort Corrosion barrier properties of PMMA-silica coatings for protection of reinforcing steel
author Uvida, Mayara C. [UNESP]
author_facet Uvida, Mayara C. [UNESP]
Trentin, Andressa [UNESP]
Harb, Samarah V.
Santilli, Celso V. [UNESP]
Hammer, Peter [UNESP]
author_role author
author2 Trentin, Andressa [UNESP]
Harb, Samarah V.
Santilli, Celso V. [UNESP]
Hammer, Peter [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade Federal de São Carlos (UFSCar)
dc.contributor.author.fl_str_mv Uvida, Mayara C. [UNESP]
Trentin, Andressa [UNESP]
Harb, Samarah V.
Santilli, Celso V. [UNESP]
Hammer, Peter [UNESP]
dc.subject.por.fl_str_mv Anticorrosion coating
Organic-inorganic hybrid
Reinforcing steel
Sol-gel process
topic Anticorrosion coating
Organic-inorganic hybrid
Reinforcing steel
Sol-gel process
description Corrosion of steel metal structures is the principal cause of failure of reinforced concrete and the absence of preventive maintenance results in financial, social, and environmental implications. To overcome this problem, research efforts are directed toward eco-friendly coatings based on organic-inorganic hybrids developed for effective protection of metal surfaces. PMMA (methyl polymethacrylate)-silica were prepared by polymerization of methyl methacrylate (MMA) and 3-(Trimethoxysilyl) propyl methacrylate (MPTS), using the thermal initiator benzoyl peroxide (BPO) and the sol-gel hydrolytic condensation of tetraethoxysilane (TEOS) and MPTS. Several micrometer thick coatings were deposited on carbon steel by dip-coating. The results of the structural analysis performed by infrared spectroscopy confirmed the formation of PMMA-silica hybrid. The electrochemical impedance spectroscopy measurements in 0.6 mol L-1 NaCl solution showed excellent corrosion resistance of up to 100 GΩ cm2 (low-frequency impedance modulus), with a durability of more than 250 days, while similar corrosion resistance but somewhat lower lifetime was obtained in simulated carbonated and alkaline concrete pore solution.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
2023-03-01T21:18:25Z
2023-03-01T21:18:25Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv 21st International Corrosion Congress, ICC INTERCORR WCO 2021, p. 518-527.
http://hdl.handle.net/11449/241723
2-s2.0-85128022745
identifier_str_mv 21st International Corrosion Congress, ICC INTERCORR WCO 2021, p. 518-527.
2-s2.0-85128022745
url http://hdl.handle.net/11449/241723
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 21st International Corrosion Congress, ICC INTERCORR WCO 2021
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 518-527
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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