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Journal of thermal analysis

, Volume 36, Issue 7–8, pp 2441–2454 | Cite as

Thermal behaviour of binary mixtures of high-molecular polyoxyethylene and alkali metal thiocyanates

  • K. Gjurova
  • M. Michailov
  • B. Bogdanov
  • Chr Uzov
Article

Abstract

The thermal behaviour of binary mixtures of sodium or potassium thiocyanate with two high-molecular polyoxyethylenes (POE) of different molecular weights was studied in a broad temperature range by means of a combined thermal analysis technique. Some thermal characteristics of the binary mixtures, which depend on the component content and the preparation method, were determined. It was established that the investigated alkali metal thiocyanates, which form molecular complexes with POE, exert a considerable thermostabilizing effect on the POE. The optimum content of sodium or potassium thiocyanate for the maximum thermostabilizing effect was found to be from 2 to 5 mass %.

Keywords

Molecular Weight Thermal Analysis Binary Mixture Thermal Behaviour Preparation Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

Mittels kombinierter Thermoanalysentechniken wurde in einem breiten Temperaturbereich das thermische Verhalten binärer Gemische aus Natrium- oder Kaliumthiocyanat und zwei hochmolekularen Polyoxyethylenen (POE) verschiedenen Molekulargewichtes untersucht. An diesen binären Gemischen wurden einige thermische Eigenschaften bestimmt, die von Komponentenzusammensetzung und Darstellungsverfahren abhängen. Es wurde festgestellt, daß die untersuchten Alkalimetallthiocyanate, die mit POE Molekülkomplexe bilden, die Thermostabilität von POE beträchtlich erhöhen. Der größte gefundene thermostabilisierende Effekt zeigt sich bei einem optimalen Natrium- oder Kaliumthiocyanatgehalt von 2–5m%.

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References

  1. 1.
    Pat. Japan, N 24582 (1963).Google Scholar
  2. 2.
    Pat. Japan, N 17106 (1967) (CL. 25 H 711).Google Scholar
  3. 3.
    Pat. Japan, N 24051 (1967) (CL. 25 H 711).Google Scholar
  4. 4.
    Pat. Japan, N 14486 (1962).Google Scholar
  5. 5.
    Pat. Japan, N 14488 (1962).Google Scholar
  6. 6.
    Pat. Japan, N 15471 (1962).Google Scholar
  7. 7.
    Pat. Japan, N 9325 (1962).Google Scholar
  8. 8.
    Pat. USA, N 3146272 (CL. 260.611.5).Google Scholar
  9. 9.
    Pat. USA, N 3063960 (CL. 260.45.2).Google Scholar
  10. 10.
    R. S. Goglev and M. B. Heuman, Sb. Chim. svoistva i modific polymerov, Nauka, Moskow 1964, p. 156.Google Scholar
  11. 11.
    A. A. Sajagan, Al. Al. Berlin, B. Z. Kompaniets and N. S. Enicolopjan, Armen. Chim., 28 (1975) 186.Google Scholar
  12. 12.
    E. Bortel and R. Camot, Macromol. Chem., 178 (1977) 2617.Google Scholar
  13. 13.
    Z. Csizmadia, Magy. Kém. Folyóirat, 83 (1977) 372.Google Scholar
  14. 14.
    E. L. Tatevosijan, V. A. Babith, H. H. Karasova and M. M. Tarnorutzki, Vysokomol. Soed., B16 (1974) 284.Google Scholar
  15. 15.
    L.P. Blanchard, V. Hornof, B. Lam. Hounda and S. L. Malhotra, Europ. Pol. J. 10 (1974) 1057.Google Scholar
  16. 16.
    J. Hogea, M. Cucu, J. Vlad, C. Jomescu and L. Bardasu, Rev. Chim. (RSR), 37 (1986) 19.Google Scholar
  17. 17.
    M. P. Shashlevith, V. A. Shutova, A. Grebensticova and E. B. Colpacov, Plastitheskie Massi, 10 (1978) 75.Google Scholar
  18. 18.
    P. V. Wright, J. Polymer Sci., Pol. Phys. Ed., 14 (1976) 955.Google Scholar
  19. 19.
    L. Reich, H. T. Lee and D. W. Levi, J. Pol. Sci., B1 (1966) 535.Google Scholar
  20. 20.
    K. M. Gjurova, Dissertatia, NRB, Sofia, BAN, 1986.Google Scholar

Copyright information

© Wiley Heyden Ltd., Chichester and Akadémiai Kiadó, Budapest 1990

Authors and Affiliations

  • K. Gjurova
    • 1
  • M. Michailov
    • 2
  • B. Bogdanov
    • 1
  • Chr Uzov
    • 1
  1. 1.Higher Institute of Chemical TechnologyBourgasBulgaria
  2. 2.Central Laboratory on Polymers at the Bulgarian Academy of SciencesSofiaBulgaria

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