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Enhancement in the Glass Transition Temperature in Latent Thiol-Epoxy Click Cured Thermosets

  • Dades identificatives

    Identificador: imarina:5133337
    Autors:
    Guzman, DailynRamis, XavierFernandez-Francos, XavierSerra, Angels
    Resum:
    Tri and tetrafunctional thiol were used as curing agent for diglycidyl ether of bisphenol A (DGEBA) catalyzed by a commercially available amine precursor, LC-80. Triglycidyl isocianurate (TGIC) was added in different proportions to the mixture to increase rigidity and glass transition temperature (Tg). The cooperative effect of increasing functionality of thiol and the presence of TGIC in the formulation leads to an increased Tg without affecting thermal stability. The kinetics of the curing of mixtures was studied by calorimetry under isothermal and non-isothermal conditions. The latent characteristics of the formulations containing amine precursors were investigated by rheometry and calorimetry. The increase in the functionality of the thiol produces a slight decrease in the storage lifetime of the mixture. The materials obtained with tetrathiol as curing agent showed the highest values of Young's modulus and Tg.
  • Altres:

    Autor segons l'article: Guzman, Dailyn; Ramis, Xavier; Fernandez-Francos, Xavier; Serra, Angels
    Departament: Enginyeria Mecànica Química Analítica i Química Orgànica
    e-ISSN: 2073-4360
    Autor/s de la URV: Fernández Francos, Xavier / Serra Albet, Maria Angels
    Paraules clau: Triglycidyl isocyanurate Thiol Thermosets Latency Epoxy resin Click reaction
    Resum: Tri and tetrafunctional thiol were used as curing agent for diglycidyl ether of bisphenol A (DGEBA) catalyzed by a commercially available amine precursor, LC-80. Triglycidyl isocianurate (TGIC) was added in different proportions to the mixture to increase rigidity and glass transition temperature (Tg). The cooperative effect of increasing functionality of thiol and the presence of TGIC in the formulation leads to an increased Tg without affecting thermal stability. The kinetics of the curing of mixtures was studied by calorimetry under isothermal and non-isothermal conditions. The latent characteristics of the formulations containing amine precursors were investigated by rheometry and calorimetry. The increase in the functionality of the thiol produces a slight decrease in the storage lifetime of the mixture. The materials obtained with tetrathiol as curing agent showed the highest values of Young's modulus and Tg.
    Àrees temàtiques: Polymers and plastics Polymer science Odontología General chemistry Farmacia Engenharias ii Ciências biológicas ii Chemistry (miscellaneous) Chemistry (all) Biotecnología Astronomia / física
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 20734360
    Adreça de correu electrònic de l'autor: angels.serra@urv.cat xavier.fernandez@urv.cat
    Identificador de l'autor: 0000-0003-1387-0358 0000-0002-3492-2922
    Pàgina final: 694
    Data d'alta del registre: 2024-09-07
    Volum de revista: 7
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://www.mdpi.com/2073-4360/7/4/680
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Polymers. 7 (4): 680-694
    Referència de l'ítem segons les normes APA: Guzman, Dailyn; Ramis, Xavier; Fernandez-Francos, Xavier; Serra, Angels (2015). Enhancement in the Glass Transition Temperature in Latent Thiol-Epoxy Click Cured Thermosets. Polymers, 7(4), 680-694. DOI: 10.3390/polym7040680
    DOI de l'article: 10.3390/polym7040680
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2015
    Pàgina inicial: 680
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Chemistry (Miscellaneous),Polymer Science,Polymers and Plastics
    Triglycidyl isocyanurate
    Thiol
    Thermosets
    Latency
    Epoxy resin
    Click reaction
    Polymers and plastics
    Polymer science
    Odontología
    General chemistry
    Farmacia
    Engenharias ii
    Ciências biológicas ii
    Chemistry (miscellaneous)
    Chemistry (all)
    Biotecnología
    Astronomia / física
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