Articles producció científica> Química Analítica i Química Orgànica

Sequential curing of amine-acrylate-methacrylate mixtures based on selective aza-Michael addition followed by radical photopolymerization

  • Dades identificatives

    Identificador: PC:1914
    Autors:
    Àngels SerraAli Osman KonurayXavier Fernández-FrancosXavier Ramis
    Resum:
    Filiació URV: SI
  • Altres:

    Autor segons l'article: Àngels Serra; Ali Osman Konuray; Xavier Fernández-Francos; Xavier Ramis
    Departament: Química Analítica i Química Orgànica
    Autor/s de la URV: SERRA ALBET, MARIA ANGELS; Ali Osman Konuray; Xavier Fernández-Francos; Xavier Ramis
    Paraules clau: aza-Michael reaction Photopolymerization
    Resum: Dual curing systems find various uses in industry with the process flexibility they provide which allows tailoring properties at different curing stages in accordance with application requirements. A safe and efficient dual curing scheme is proposed here for a set of mixtures containing different proportions of acrylates and methacrylates. The first curing stage is a stoichiometric aza-Michael addition between acrylates and an amine, followed by photo-initiated radical homopolymerization of methacrylates and remaining acrylates. An analysis of aza-Michael reaction kinetics confirmed that amines react selectively with acrylates, leaving methacrylates unreacted after the first curing stage. It was found that acrylate-rich mixtures achieve complete global conversion at the end of the scheme. However, the highest crosslinking density and thermal resistance was observed in a methacrylate-rich formulation. The resulting materials show a wide range of viscoelastic properties at both curing stages that can be tailored to a variety of industrial application needs.
    Grup de recerca: Polimers
    Àrees temàtiques: Química Química Chemistry
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0014-3057
    Identificador de l'autor: 0000-0003-1387-0358; n/a; 0000-0002-3492-2922; 0000-0003-2550-7185
    Data d'alta del registre: 2016-10-10
    Pàgina final: 267
    Volum de revista: 84
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    Enllaç font original: https://www.sciencedirect.com/science/article/abs/pii/S0014305716306863?via%3Dihub
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI de l'article: 10.1016/j.eurpolymj.2016.09.025
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2016
    Pàgina inicial: 256
    Tipus de publicació: Article Artículo Article
  • Paraules clau:

    Polimerització
    Viscoelasticitat
    aza-Michael reaction
    Photopolymerization
    Química
    Química
    Chemistry
    0014-3057
  • Documents:

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