Articles producció científica> Química Analítica i Química Orgànica

Structural reversible adhesives based on thiol-epoxy vitrimers

  • Identification data

    Identifier: imarina:9330078
  • Authors:

    Roig, A
    Molina, L
    Serra, A
    Santiago, D
    De la Flor, S
    Polymer Testing
    10.1016/j.polymertesting.2023.108205
    Polymer Testing. 128
  • Others:

    Author, as appears in the article.: Roig, A; Molina, L; Serra, A; Santiago, D; De la Flor, S
    Department: Enginyeria Mecànica Química Analítica i Química Orgànica
    URV's Author/s: De la Flor Lopez, Silvia / Roig De Arespacochaga, Anna / Serra Albet, Maria Angels
    Keywords: Vitrimers Thiol-epoxy Shape-memory Reversible adhesives Functional adhesives Covalent adaptable networks vitrimers thermosets temperature robust reversible adhesives functional adhesives ester dgeba covalent adaptable networks
    Abstract: This work presents a family of functional adhesives based on covalent adaptable networks (CANs). Low-cost and commercially available monomers, including diglycidyl ether of bisphenol A, pentaerythritol tetrakis (3-mercapto propionate) and dipentaerythritol hexakis (3-mercapto propionate), were cured using a base catalyst to produce highly cross-linked materials. The catalyst selection and the study of the curing reaction were performed using differential scanning calorimetry (DSC) and Fourier-transform infrared spectroscopy (FTIR). The catalyst was chosen for better feasibility of industrial production, characterized by short curing times and relatively low temperatures. Thermal stability and thermomechanical properties of the final materials were evaluated through thermogravimetry (TGA) and dynamic mechanical thermal analysis (DMTA), respectively, revealing glass transition temperatures (Tg) higher than 50 °C. Stress relaxation tests were conducted to investigate the vitrimeric behaviour of the polymers, which exhibited an Arrhenius-type dependence of relaxation times on temperature. Importantly, both materials demonstrated impressive creep resistance up to 70 °C, indicating their suitability for use at elevated service temperatures. Tensile and lap-shear tests were also performed, revealing high lap-shear strength values (up to 16 MPa) comparable to those of commercial adhesives. Furthermore, these vitrimers displayed remarkable properties such as shape memory, shape reconfiguration, and self-welding capabilities, underscoring their excellent potential for a wide range of highly demanding applications in industrial production.
    Thematic Areas: Química Polymers and plastics Polymer science Organic chemistry Odontología Medicina ii Medicina i Materials science, characterization & testing Materiais Interdisciplinar Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas iii Ciências ambientais Ciências agrárias i Ciência de alimentos Biotecnología Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: angels.serra@urv.cat silvia.delaflor@urv.cat
    Author identifier: 0000-0003-1387-0358 0000-0002-6851-1371
    Record's date: 2024-07-20
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/pii/S0142941823002854?via%3Dihub
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Polymer Testing. 128
    APA: Roig, A; Molina, L; Serra, A; Santiago, D; De la Flor, S (2023). Structural reversible adhesives based on thiol-epoxy vitrimers. Polymer Testing, 128(), -. DOI: 10.1016/j.polymertesting.2023.108205
    Article's DOI: 10.1016/j.polymertesting.2023.108205
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2023
    Publication Type: Journal Publications
  • Keywords:

    Materials Science, Characterization & Testing,Organic Chemistry,Polymer Science,Polymers and Plastics
    Vitrimers
    Thiol-epoxy
    Shape-memory
    Reversible adhesives
    Functional adhesives
    Covalent adaptable networks
    vitrimers
    thermosets
    temperature
    robust
    reversible adhesives
    functional adhesives
    ester
    dgeba
    covalent adaptable networks
    Química
    Polymers and plastics
    Polymer science
    Organic chemistry
    Odontología
    Medicina ii
    Medicina i
    Materials science, characterization & testing
    Materiais
    Interdisciplinar
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Ciências biológicas iii
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Biotecnología
    Astronomia / física
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