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

  • Datos identificativos

    Identificador: PC:1914
    Autores:
    Àngels SerraAli Osman KonurayXavier Fernández-FrancosXavier Ramis
    Resumen:
    Filiació URV: SI
  • Otros:

    Autor según el artículo: Àngels Serra; Ali Osman Konuray; Xavier Fernández-Francos; Xavier Ramis
    Departamento: Química Analítica i Química Orgànica
    Autor/es de la URV: SERRA ALBET, MARIA ANGELS; Ali Osman Konuray; Xavier Fernández-Francos; Xavier Ramis
    Palabras clave: aza-Michael reaction Photopolymerization
    Resumen: 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.
    Grupo de investigación: Polimers
    Áreas temáticas: Química Química Chemistry
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0014-3057
    Identificador del autor: 0000-0003-1387-0358; n/a; 0000-0002-3492-2922; 0000-0003-2550-7185
    Fecha de alta del registro: 2016-10-10
    Página final: 267
    Volumen de revista: 84
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/abs/pii/S0014305716306863?via%3Dihub
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI del artículo: 10.1016/j.eurpolymj.2016.09.025
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2016
    Página inicial: 256
    Tipo de publicación: Article Artículo Article
  • Palabras clave:

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

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