Nothing Special   »   [go: up one dir, main page]
Skip to main content
Springer Nature Link
Log in

Separation of components of different molecular mobility by calorimetry, dynamic mechanical and dielectric spectroscopy

  • Polymers
  • Published:
Journal of thermal analysis Aims and scope Submit manuscript

Abstract

The relaxation strength at the glass transition for semi-crystalline polymers observed by different experimental methods shows significant deviations from a simple two-phase model. Introduction of a rigid amorphous fraction, which is non-crystalline but does not participate in the glass transition, allows a description of the relaxation behavior of such systems. The question arises when does this amorphous material vitrify. Our measurements on PET identify no separate glass transition and no devitrification over a broad temperature range. Measurements on a low molecular weight compound which partly crystallizes supports the idea that vitrification of the rigid amorphous material occurs during formation of crystallites. The reason for vitrification is the immobilization of co-operative motions due to the fixation of parts of the molecules in the crystallites. Local movements (Β-relaxation) are only slightly influenced by the crystallites and occur in the whole non-crystalline fraction.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Subscribe and save

Springer+ Basic
$34.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or eBook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Explore related subjects

Discover the latest articles, news and stories from top researchers in related subjects.

References

  1. Y. Ishida, K. Yamafuji, H. Ito and M. Takayanagi, Koll.-Zeitsch. und Zeitsch. Polym., 184 (1962) 97.

    Article  CAS  Google Scholar 

  2. H. Suzuki, J. Grebowicz and B. Wunderlich, Brit. Polym., J., 17 (1985) 1.

    Article  CAS  Google Scholar 

  3. M. Alsleben and C. Schick, Thermochim. Acta, 238 (1994) 203.

    Article  CAS  Google Scholar 

  4. E. Donth, Relaxation and Thermodynamics in Polymers, Glass Transition, Akademie Verlag, Berlin 1993.

    Google Scholar 

  5. J. JÄckle, J. Non-Cryst. Solids, 172 (1994) 104.

    Article  Google Scholar 

  6. J. Dobbertin, A. Hensel and C. Schick, J. Thermal Anal., 47 (1996) 1027.

    Article  CAS  Google Scholar 

  7. C. Schick, F. Fabry, U. Schnell, G. Stoll, L. Deutschbein and W. Mischok, Acta Polym., 39 (1988) 705.

    Article  CAS  Google Scholar 

  8. E. W. Fischer and S. Fakirov, J. Mater. Sci., 11 (1976) 1041.

    Article  CAS  Google Scholar 

  9. G. Groeninckx, H. Berghmans and G. Smets, J. Polym. Sci. Polym. Phys. Ed., 18 (1980) 1311.

    Article  CAS  Google Scholar 

  10. G. Groeninckx and H. Berghmans, J. Polym. Sci. Polym. Phys. Ed., 18 (1980) 1325.

    Article  CAS  Google Scholar 

  11. C. Schick and E. Donth, Physica Scripta, 43 (1991) 423.

    Article  CAS  Google Scholar 

  12. C. Schick, L. KrÄmer und W. Mischock, Acta Polym., 36 (1985) 47.

    Article  CAS  Google Scholar 

  13. M. Pötter, H. Dehne, H. Reinke, J. Dobbertin and C. Schick, Mol. Cryst. Liq. Cryst., submitted.

  14. N. O. Birge and S. R. Nagel, Phys. Rev. Lett., 54 (1985) 2674.

    Article  CAS  Google Scholar 

  15. N. O. Birge and S. R. Nagel, Rev. Sci. Instrum., 58 (1987) 1464.

    Article  Google Scholar 

  16. R. Florian, J. Peilzl, M. Rosenberg, H. Vargas and R. Wernhardt, Phys. Status Solidi (a), 48 (1978) k35.

    Article  CAS  Google Scholar 

  17. M. Nishikawa and Y. Saruyama, Thermochim. Acta, 267 (1995) 75.

    Article  CAS  Google Scholar 

  18. M. Reading, Trends Polym. Sci., 8 (1993) 248.

    Google Scholar 

  19. J. E. K. Schawe, Thermochim. Acta, 261 (1995) 183.

    Article  CAS  Google Scholar 

  20. A. Hensel and C. Schick, Thermochim. Acta, in preparation.

  21. B. Wunderlich, Pure and Applied Chem., 67 (1995) 1919 see on the WWW (Internet), URL: http://funnelweb.utcc.utk.edu/~athas.

    Article  Google Scholar 

  22. A. Hensel, J. Dobbertin, J. E. K. Schawe, A. Boller and C. Schick, J. Thermal Anal., 46 (1996) 935.

    Article  CAS  Google Scholar 

  23. A. Boller, C. Schick and B. Wunderlich, Thermochim. Acta, 266 (1995) 97.

    Article  CAS  Google Scholar 

  24. A. Boller, Y. Jin and B. Wunderlich, J. Thermal Anal., 42 (1994) 307.

    Article  CAS  Google Scholar 

  25. F. Kremer, D. Boese, G. Meier and E. W. Fischer, Prog. Coll. Polym. Sci., 80 (1989) 129.

    Article  CAS  Google Scholar 

  26. S. Havriliak and S. Negami, J. Polym. Sci. C, 14 (1966) 99.

    Google Scholar 

  27. E. Schlosser and A. Schönhals, Coll. Polym. Sci., 267 (1989) 963.

    Article  CAS  Google Scholar 

  28. E. Schlosser, A. Schönhals, H. E. Carius and H. Goering, Macromolecules, 26 (1993) 6027.

    Article  CAS  Google Scholar 

  29. J. C. Coburn and R. H. Boyd, Macromolecules, 19 (1986) 2238.

    Article  CAS  Google Scholar 

  30. J. Dobbertin, Ph D, University of Rostock, 1995.

  31. M. Arndt and F. Kremer, Mat. Res. Soc. Symp. Proc., 366 (1995) 259.

    CAS  Google Scholar 

  32. H. SchÄfer, E. Sternin, R. Stannarius, M. Arndt and F. Kremer, Phys. Rev. Lett., 76 (1996) 2177.

    Article  Google Scholar 

  33. E. Schlosser and A. Schönhals, Coll. Polym. Sci., 267 (1989) 963.

    Article  CAS  Google Scholar 

  34. P. Cebe and P. P. Huo, Thermochim. Acta, 238 (1994) 229.

    Article  CAS  Google Scholar 

  35. P. J. Flory, Trans. Faraday Soc., 51 (1955) 848.

    Article  CAS  Google Scholar 

  36. W. Gerum, G. W. H. Höhne and W. Wilke, Macromol. Chem. Phys., 197 (1996) 1691.

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Physics, University of Rostock, UniversitÄtsplatz 3, 18051, Rostock, Germany

    C. Schick, J. Dobbertin, A. Hensel, A. Wurm & S. Weyer

  2. Department of Chemistry, University of Rostock, Buchbinderstr. 9, 18051, Rostock, Germany

    M. Pötter & H. Dehne

  3. Physics Department, National Research Center, Dokki, Cairo, Egypt

    A. M. Ghoneim

Authors
  1. C. Schick
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. J. Dobbertin
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. M. Pötter
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. H. Dehne
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. A. Hensel
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. A. Wurm
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. A. M. Ghoneim
    View author publications

    You can also search for this author in PubMed Google Scholar

  8. S. Weyer
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

This work has been supported by the DFG and DAAD (A.M.G). The authors express their thanks to G.W.H. Höhne (Ulm) for fruitful discussions on crystallization of alkanes.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Schick, C., Dobbertin, J., Pötter, M. et al. Separation of components of different molecular mobility by calorimetry, dynamic mechanical and dielectric spectroscopy. Journal of Thermal Analysis 49, 499–511 (1997). https://doi.org/10.1007/BF01987477

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01987477

Keywords

Search

Navigation