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

  • Identification data

    Identifier: PC:1914
    Authors:
    Àngels SerraAli Osman KonurayXavier Fernández-FrancosXavier Ramis
    Abstract:
    Filiació URV: SI
  • Others:

    Author, as appears in the article.: Àngels Serra; Ali Osman Konuray; Xavier Fernández-Francos; Xavier Ramis
    Department: Química Analítica i Química Orgànica
    URV's Author/s: SERRA ALBET, MARIA ANGELS; Ali Osman Konuray; Xavier Fernández-Francos; Xavier Ramis
    Keywords: aza-Michael reaction Photopolymerization
    Abstract: 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.
    Research group: Polimers
    Thematic Areas: Química Química Chemistry
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0014-3057
    Author identifier: 0000-0003-1387-0358; n/a; 0000-0002-3492-2922; 0000-0003-2550-7185
    Record's date: 2016-10-10
    Last page: 267
    Journal volume: 84
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0014305716306863?via%3Dihub
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Article's DOI: 10.1016/j.eurpolymj.2016.09.025
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    First page: 256
    Publication Type: Article Artículo Article
  • Keywords:

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

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