Get access

Kinetic study by FTIR, TMA, and DSC of the curing of a mixture of DGEBA resin and γ-butyrolactone catalyzed by ytterbium triflate

Authors

  • Xavier Ramis,

    1. Departament de Màquines i Motors Tèrmics, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain
    Search for more papers by this author
  • Josep Maria Salla,

    Corresponding author
    1. Departament de Màquines i Motors Tèrmics, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain
    • Departament de Màquines i Motors Tèrmics, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain
    Search for more papers by this author
  • Cristina Mas,

    1. Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Plaça Imperial Tárraco 1, 43005 Tarragona, Spain
    Search for more papers by this author
  • Ana Mantecón,

    1. Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Plaça Imperial Tárraco 1, 43005 Tarragona, Spain
    Search for more papers by this author
  • Angels Serra

    1. Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Plaça Imperial Tárraco 1, 43005 Tarragona, Spain
    Search for more papers by this author

Abstract

A mixture of diglycidylether of bisphenol A (DGEBA) and γ-butyrolactone (γ-BL) was cured in the presence of ytterbium triflate as a catalyst. The kinetics of the various elemental processes that occur in the curing process were studied by means of isothermal curing in the FTIR spectrometer. The kinetics of the contraction during the curing was also evaluated by TMA. In both cases, the kinetics was analyzed by means of isoconversional procedure and the kinetic model was determined with the so-called compensation effect (isokinetic relationship). The isothermal kinetic analysis was compared with that obtained by dynamic curing in DSC. We found that all the reactive processes and the contraction follow a surface-controlled reaction type of kinetic mechanism, R3. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 381–393, 2004

Ancillary