Articles producció científica> Química Analítica i Química Orgànica

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

  • Identification data

    Identifier: PC:1819
    Authors:
    A. SerraO. KorychenskaC. AceboM. BezuglyiJ.V. Grazulevicius
    Abstract:
    DOI: 10.1016/j.reactfunctpolym.2016.07.012 Link: http://www.sciencedirect.com/science/article/pii/S1381514816301432 Filiació URV: SI
  • Others:

    Author, as appears in the article.: A. Serra; O. Korychenska; C. Acebo; M. Bezuglyi; J.V. Grazulevicius
    Department: Química Analítica i Química Orgànica
    URV's Author/s: SERRA ALBET, MARIA ANGELS; O. Korychenska; C. Acebo; M. Bezuglyi; J.V. Grazulevicius
    Keywords: epoxy resins hyperbranched polymers Thermosets
    Abstract: 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.
    Research group: Polimers
    Thematic Areas: Química Química Chemistry
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 1381-5148
    Author identifier: n/a; n/a; n/a; n/a; n/a
    Record's date: 2016-09-13
    Last page: 92
    Journal volume: 106
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S1381514816301432?via%3Dihub
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Article's DOI: 10.1016/j.reactfunctpolym.2016.07.012
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    First page: 86
    Publication Type: Article Artículo Article
  • Keywords:

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

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