Articles producció científica> Química Analítica i Química Orgànica

Recyclable and Reprocessable Epoxy Vitrimer Adhesives

  • Dades identificatives

    Identificador: imarina:9291927
    Autors:
    Santiago, DavidGuzman, DailynVerdugo, PereDe la Flor, SilviaSerra, Angels
    Resum:
    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.
  • Altres:

    Autor segons l'article: Santiago, David; Guzman, Dailyn; Verdugo, Pere; De la Flor, Silvia; Serra, Angels
    Departament: Química Analítica i Química Orgànica Enginyeria Mecànica
    Autor/s de la URV: De la Flor Lopez, Silvia / Serra Albet, Maria Angels / Verdugo Fernandez, Pedro Manuel
    Paraules clau: Vitrimers Thermosets Recycling Lightweight Glass-transition Epoxy Adhesion vitrimers transesterification thermosets temperature silica recycling lightweight fracture composite catalyst bonded joints adhesion
    Resum: 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.
    Àrees temàtiques: Process chemistry and technology Polymers and plastics Polymer science Organic chemistry Materials science, multidisciplinary
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: angels.serra@urv.cat silvia.delaflor@urv.cat
    Identificador de l'autor: 0000-0003-1387-0358 0000-0002-6851-1371
    Data d'alta del registre: 2024-11-02
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://pubs.acs.org/doi/10.1021/acsapm.2c02063
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Acs Applied Polymer Materials. 5 (3): 2006-2015
    Referència 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 de l'article: 10.1021/acsapm.2c02063
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2023
    Tipus de publicació: Journal Publications
  • Paraules clau:

    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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