Articles producció científica> Química Analítica i Química Orgànica

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

  • Datos identificativos

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

    Autor según el artículo: A. Serra; O. Korychenska; C. Acebo; M. Bezuglyi; J.V. Grazulevicius
    Departamento: Química Analítica i Química Orgànica
    Autor/es de la URV: SERRA ALBET, MARIA ANGELS; O. Korychenska; C. Acebo; M. Bezuglyi; J.V. Grazulevicius
    Palabras clave: epoxy resins hyperbranched polymers Thermosets
    Resumen: 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.
    Grupo de investigación: Polimers
    Áreas temáticas: Química Química Chemistry
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 1381-5148
    Identificador del autor: n/a; n/a; n/a; n/a; n/a
    Fecha de alta del registro: 2016-09-13
    Página final: 92
    Volumen de revista: 106
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/abs/pii/S1381514816301432?via%3Dihub
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI del artículo: 10.1016/j.reactfunctpolym.2016.07.012
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2016
    Página inicial: 86
    Tipo de publicación: Article Artículo Article
  • Palabras clave:

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

  • Cerca a google

    Search to google scholar