Exploring lignin potential on polyurethane-silica hybrid coatings tribological, anticorrosive and bactericidal properties

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversity of Central Florida-
Autor(es): dc.contributorMaterials Performance-
Autor(es): dc.creatorBraz, Álvaro G.-
Autor(es): dc.creatorHarb, Samarah V.-
Autor(es): dc.creatorTrentin, Andressa-
Autor(es): dc.creatorKolanthai, Elayaraja-
Autor(es): dc.creatorNurmela, Asta-
Autor(es): dc.creatorPulcinelli, Sandra H.-
Autor(es): dc.creatorPakarinen, Janne-
Autor(es): dc.creatorSeal, Sudipta-
Autor(es): dc.creatorSantilli, Celso V.-
Data de aceite: dc.date.accessioned2025-08-21T16:25:28Z-
Data de disponibilização: dc.date.available2025-08-21T16:25:28Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.porgcoat.2024.108882-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/299356-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/299356-
Descrição: dc.descriptionThis study investigates the potential of lignin as a sustainable alternative to petroleum-based polyols in the production of polyurethane-silica (PU-Si) coatings with improved tribological, anticorrosive and bactericidal properties. To achieve this goal, hybrid PU-Si coatings were developed and modified by incorporating varying amounts of lignin into the PU macromer chain, which were then applied to carbon steel substrates. Analysis through Fourier-transform infrared spectroscopy (FTIR) and solid state nuclear magnetic resonance (13C NMR) analyses confirmed complete integration of the lignin into the PU chains. Additionally, 29Si NMR revealed that lignin incorporation acted to increase the condensation degree of the silica. Lignin had a smoothing effect in the hybrid coatings, leading to reduced roughness. Mechanical tests showed that the presence of lignin decreased the friction coefficients of the coatings, while enhancing their wear resistance and critical delamination loads, compared to the coating without lignin. The best PU-Si-lignin coating presented outstanding anticorrosive performance, achieving low-frequency impedance values up to 100 GΩ cm2, without failure for over 100 days. Furthermore, the incorporation of lignin inhibited E. coli biofilm formation. These multifunctional properties suggest that these coatings have promising applications across various industries, from infrastructure to healthcare.-
Descrição: dc.descriptionTeknologian Tutkimuskeskus VTT-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, SP-
Descrição: dc.descriptionDepartment of Materials Engineering (DEMa) Federal University of São Carlos (UFSCar), SP-
Descrição: dc.descriptionAdvanced Materials Processing and Analysis Center Department of Materials Science and Engineering University of Central Florida-
Descrição: dc.descriptionVTT Technical Research Center of Finland Ltd. Materials Performance, Kemistintie 3-
Descrição: dc.descriptionBiionix Cluster College of Medicine University of Central Florida-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, SP-
Descrição: dc.descriptionCAPES: 001-
Descrição: dc.descriptionCNPq: 151213/2023-2-
Descrição: dc.descriptionFAPESP: 2018/26060-3-
Descrição: dc.descriptionFAPESP: 2021/11538-8-
Descrição: dc.descriptionFAPESP: 2023/01616-7-
Descrição: dc.descriptionFAPESP: 2023/09958-4-
Descrição: dc.descriptionCNPq: 304592/2019-6-
Descrição: dc.descriptionCNPq: 309419/2020-4-
Idioma: dc.languageen-
Relação: dc.relationProgress in Organic Coatings-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAnticorrosive coating-
Palavras-chave: dc.subjectBactericidal coating-
Palavras-chave: dc.subjectLignin-
Palavras-chave: dc.subjectPolyurethane-
Palavras-chave: dc.subjectSilica-
Título: dc.titleExploring lignin potential on polyurethane-silica hybrid coatings tribological, anticorrosive and bactericidal properties-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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