Journal of Materials Science

, Volume 37, Issue 20, pp 4273–4277 | Cite as

FTIR investigation of structural modifications during low-temperature ageing of polycarbonate

Article

Abstract

Conformational changes are sought during low-temperature ageing of solution-cast films of BPA-polycarbonate, by observing the conformationally sensitive IR aromatic breathing band at 1600 cm−1. Preliminary results using the carbonyl band at 1775 cm−1 had shown some indication of ageing-induced changes in the distribution of conformations. The present results obtained on the 1600 cm−1 band show no indication whatever of conformational rearrangements. This result, at variance with observations of conformational rearrangements accompanying sub-Tg annealing, lends support to the concept that sub-Tg annealing and low temperature ageing are two distinct processes.

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References

  1. 1.
    N. Heymans, Polymer 38 (1997) 3435.Google Scholar
  2. 2.
    N. Heymans and B. Dequenne, ibid. 42 (2001) 5337.Google Scholar
  3. 3.
    C. Bauwens-Crowet and J.-C. Bauwens, ibid. 27 (1986) 709.Google Scholar
  4. 4.
    Idem., ibid. 31 (1990) 248.Google Scholar
  5. 5.
    Idem., ibid. 31 (1990) 646.Google Scholar
  6. 6.
    C. Bauwens-Crowet, J. Mater. Sci. 34 (1999) 1701.Google Scholar
  7. 7.
    P. Schmidt J. Dybal E. Turska and A. Kulczycki, Polymer 32 (1991) 1862.Google Scholar
  8. 8.
    J. Dybal P. Schmidt J. Baldrian and J. KratochvÍl, Macromolecules 31 (1998) 6611.Google Scholar
  9. 9.
    P. Tekely and E. Turska, Polymer 24 (1983) 667.Google Scholar
  10. 10.
    J. Othmezouri-Decerf, J. Mater. Sci. 34 (1999) 2351.Google Scholar
  11. 11.
    J.-C. Bauwens, Plastics and Rubber Processing and Applications 7 (1987) 143.Google Scholar
  12. 12.
    P. Lani Lee T. Kowalewski M. D. Poliks and J. Schaefer, Macromolecules 28 (1995) 2476.Google Scholar
  13. 13.
    R. Pixa B. Grisoni T. Gay and D. Froelich, Polymer Bulletin 16 (1986) 381.Google Scholar
  14. 14.
    R. Wimberger-Friedl and J. G. de Bruin, Macromolecules 29 (1996) 4992.Google Scholar
  15. 15.
    A. D. Drozdov, Computational Materials Science 15 (1999) 422.Google Scholar

Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  1. 1.Physique des Matériaux de Synthèse 259Université Libre de BruxellesBelgium

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