Articles producció científica> Química Analítica i Química Orgànica

Recyclable and Reprocessable Epoxy Vitrimer Adhesives

  • Datos identificativos

    Identificador: imarina:9291927
    Autores:
    Santiago, DavidGuzman, DailynVerdugo, PereDe la Flor, SilviaSerra, Angels
    Resumen:
    Epoxy-based vitrimers represent a promising option toward sustainability and circular economy in automotive structural applications. In this work, a series of vitrimer materials are presented to be used as recyclable and reprocessable adhesives for such applications. These formulations consist of diglycidyl ether of bisphenol A-anhydride systems with glutaric anhydride and glycerol as cocuring agents in several proportions and 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) or 1-methylimidazole (1MI) as catalysts. The materials obtained revealed relatively high Tg s, up to 85 °C, as well as a homogeneous network structure. They also showed complete stress relaxation in times as short as just 3.6 min at 180 °C. The presence of TBD in the vitrimer allows the fastest relaxation. The thermosets were recycled and reprocessed through alcoholysis and mechanical grinding. These formulations were also applied as adhesives for mono- and multimaterial joints showing values of single-lap shear stress as high as those shown by commercial adhesives. Reversible adhesion was also studied after joint failure and after debonding without failure. In summary, the materials and methodology presented here represent a comprehensive study of recyclable and reprocessable epoxy-based vitrimers.
  • Otros:

    Autor según el artículo: Santiago, David; Guzman, Dailyn; Verdugo, Pere; De la Flor, Silvia; Serra, Angels
    Departamento: Química Analítica i Química Orgànica Enginyeria Mecànica
    Autor/es de la URV: De la Flor Lopez, Silvia / Serra Albet, Maria Angels / Verdugo Fernandez, Pedro Manuel
    Palabras clave: Vitrimers Thermosets Recycling Lightweight Glass-transition Epoxy Adhesion vitrimers transesterification thermosets temperature silica recycling lightweight fracture composite catalyst bonded joints adhesion
    Resumen: Epoxy-based vitrimers represent a promising option toward sustainability and circular economy in automotive structural applications. In this work, a series of vitrimer materials are presented to be used as recyclable and reprocessable adhesives for such applications. These formulations consist of diglycidyl ether of bisphenol A-anhydride systems with glutaric anhydride and glycerol as cocuring agents in several proportions and 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) or 1-methylimidazole (1MI) as catalysts. The materials obtained revealed relatively high Tg s, up to 85 °C, as well as a homogeneous network structure. They also showed complete stress relaxation in times as short as just 3.6 min at 180 °C. The presence of TBD in the vitrimer allows the fastest relaxation. The thermosets were recycled and reprocessed through alcoholysis and mechanical grinding. These formulations were also applied as adhesives for mono- and multimaterial joints showing values of single-lap shear stress as high as those shown by commercial adhesives. Reversible adhesion was also studied after joint failure and after debonding without failure. In summary, the materials and methodology presented here represent a comprehensive study of recyclable and reprocessable epoxy-based vitrimers.
    Áreas temáticas: Process chemistry and technology Polymers and plastics Polymer science Organic chemistry Materials science, multidisciplinary
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: angels.serra@urv.cat silvia.delaflor@urv.cat
    Identificador del autor: 0000-0003-1387-0358 0000-0002-6851-1371
    Fecha de alta del registro: 2024-11-02
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://pubs.acs.org/doi/10.1021/acsapm.2c02063
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Acs Applied Polymer Materials. 5 (3): 2006-2015
    Referencia de l'ítem segons les normes APA: Santiago, David; Guzman, Dailyn; Verdugo, Pere; De la Flor, Silvia; Serra, Angels (2023). Recyclable and Reprocessable Epoxy Vitrimer Adhesives. Acs Applied Polymer Materials, 5(3), 2006-2015. DOI: 10.1021/acsapm.2c02063
    DOI del artículo: 10.1021/acsapm.2c02063
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2023
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Materials Science, Multidisciplinary,Organic Chemistry,Polymer Science,Polymers and Plastics,Process Chemistry and Technology
    Vitrimers
    Thermosets
    Recycling
    Lightweight
    Glass-transition
    Epoxy
    Adhesion
    vitrimers
    transesterification
    thermosets
    temperature
    silica
    recycling
    lightweight
    fracture
    composite
    catalyst
    bonded joints
    adhesion
    Process chemistry and technology
    Polymers and plastics
    Polymer science
    Organic chemistry
    Materials science, multidisciplinary
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