Articles producció científica> Química Analítica i Química Orgànica

Epoxy-thiol thermosets modified by carbazole decorated hyperbranched poly(ethyleneimine) for optical applications

  • Dades identificatives

    Identificador: PC:1819
    Autors:
    A. SerraO. KorychenskaC. AceboM. BezuglyiJ.V. Grazulevicius
    Resum:
    DOI: 10.1016/j.reactfunctpolym.2016.07.012 Link: http://www.sciencedirect.com/science/article/pii/S1381514816301432 Filiació URV: SI
  • Altres:

    Autor segons l'article: A. Serra; O. Korychenska; C. Acebo; M. Bezuglyi; J.V. Grazulevicius
    Departament: Química Analítica i Química Orgànica
    Autor/s de la URV: SERRA ALBET, MARIA ANGELS; O. Korychenska; C. Acebo; M. Bezuglyi; J.V. Grazulevicius
    Paraules clau: epoxy resins hyperbranched polymers Thermosets
    Resum: New epoxy-thiol thermosets containing carbazolyl moieties were prepared by adding different proportions of a hyperbranched poly(ethyleneimine) with carbazolyl terminated units to diglycidylether of bisphenol A/trimethylolpropane tris(3-mercaptopropionate) stoichiometric formulations. This carbazolyl decorated hyperbranched polymer was synthesized from commercially available hyperbranched poly(ethyleneimine) and N-glycidyl carbazole and was characterized by standard procedures. The influence of adding different proportions of the modifier to the formulation on the curing process was determined by calorimetry after the selection of the most adequate latent initiator, which was a urethane compound, named PDU-250. Its decomposition at a well-defined temperature liberates the amine that initiates the thiol-epoxy curing process. The materials obtained with different proportions of modifier were characterized by means of thermomechanical analysis. On increasing the proportion of modifier, the glass transition temperature and the damping characteristics increased, but the thermal stability and the homogeneity were reduced. The films obtained by curing the different formulations exhibited fluorescence maxima at 370–374 nm. The fluorescence quantum yields were in the range of 17–32% and they decreased with the increase of the amount of the modifier in the materials.
    Grup de recerca: Polimers
    Àrees temàtiques: Química Química Chemistry
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 1381-5148
    Identificador de l'autor: n/a; n/a; n/a; n/a; n/a
    Data d'alta del registre: 2016-09-13
    Pàgina final: 92
    Volum de revista: 106
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2016
    Pàgina inicial: 86
    Tipus de publicació: Article Artículo Article
  • Paraules clau:

    Resines epoxídiques
    epoxy resins
    hyperbranched polymers
    Thermosets
    Química
    Química
    Chemistry
    1381-5148
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