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The use of lanthanide triflates in the preparation of poly(thiourethane) covalent adaptable networks

  • Identification data

    Identifier: imarina:9327220
  • Authors:

    Guerrero, F
    Gamardella, F
    Ramis, X
    de la Flor, S
    Serra, A
  • Others:

    Author, as appears in the article.: Guerrero, F; Gamardella, F; Ramis, X; de la Flor, S; Serra, A
    Department: Enginyeria Mecànica Química Analítica i Química Orgànica
    URV's Author/s: De la Flor Lopez, Silvia / Gamardella, Francesco / Guerrero Ruiz, Federico / Serra Albet, Maria Angels
    Keywords: Ring-opening polymerization Reshapability Recyclability Poly(thiourethanes) Lanthanide triflates Covalent adaptable networks thermosets resins reshapability recyclability lanthanide triflates lactones isocyanate facile dgeba curing initiators covalent adaptable networks cationic copolymerization catalysts
    Abstract: Covalent adaptable networks (CANs) are new polymeric materials with the mechanical properties of thermosets and the possibility of being recycled like thermoplastics. Poly(thiourethane) networks have demonstrated vitrimeric-like behavior at high temperatures due to the trans-thiocarbamoylation process, which Lewis acids and bases can accelerate. In this study, we report the use of lanthanide triflates (La, Sm, Dy, Er, and Yb) as Lewis acid catalysts, a greener alternative to other metallic catalysts as dibutyltin dilaurate (DBTDL) widely used in poly(urethane) and poly(thiourethane) networks. Moreover, they are not as reactive as DBTDL, and the curing mixture can be manipulated for a longer time at room temperature. As monomers, trimethylolpropane tris(3-mercapto propionate) (S3), hexamethylene diisocyanate (HDI), and isophorone diisocyanate (IPDI) have been used. We have demonstrated that the materials prepared with lanthanum triflate present the lowest relaxation times than those prepared with other lanthanide triflates or DBTDL. Calorimetry (DSC) and infrared spectroscopy (FTIR) were applied to study the curing process. The materials obtained were fully characterized by thermogravimetric analysis (TGA) and thermomechanical tests (DMA).
    Thematic Areas: Química Polymers and plastics Polymer science Organic chemistry Medicina ii Materials chemistry Materiais Interdisciplinar Farmacia Engenharias iv Engenharias iii Engenharias ii Ciências biológicas ii Ciências biológicas i Ciências agrárias i Biotecnología Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: federico.guerrero@estudiants.urv.cat federico.guerrero@estudiants.urv.cat angels.serra@urv.cat silvia.delaflor@urv.cat
    Author identifier: 0000-0001-7163-4068 0000-0001-7163-4068 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/S003238612300592X?via%3Dihub
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Polymer. 283
    APA: Guerrero, F; Gamardella, F; Ramis, X; de la Flor, S; Serra, A (2023). The use of lanthanide triflates in the preparation of poly(thiourethane) covalent adaptable networks. Polymer, 283(), -. DOI: 10.1016/j.polymer.2023.126262
    Article's DOI: 10.1016/j.polymer.2023.126262
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2023
    Publication Type: Journal Publications
  • Keywords:

    Materials Chemistry,Organic Chemistry,Polymer Science,Polymers and Plastics
    Ring-opening polymerization
    Reshapability
    Recyclability
    Poly(thiourethanes)
    Lanthanide triflates
    Covalent adaptable networks
    thermosets
    resins
    reshapability
    recyclability
    lanthanide triflates
    lactones
    isocyanate
    facile
    dgeba
    curing initiators
    covalent adaptable networks
    cationic copolymerization
    catalysts
    Química
    Polymers and plastics
    Polymer science
    Organic chemistry
    Medicina ii
    Materials chemistry
    Materiais
    Interdisciplinar
    Farmacia
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências agrárias i
    Biotecnología
    Astronomia / física
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