Skip to main content
SpringerLink
Log in

Liquid-induced crystallization and annealing of polyester-urethane elastomers

  • Original Contributions
  • Polymer Science
  • Published:
Colloid and Polymer Science Aims and scope Submit manuscript

Summary

The crystalline structure formed at elevated temperature during annealing of the polyester-urethane elastomers swollen in the hydrogen-bonding liquids has been investigated.

The elastomers were prepared using a constant mole ratio of chain extender and macroglycol and variable mole ratio of diisocyanate. The hydrogen-bonding liquids were solutions of meta-cresol/ethanol, phenol/water, phenol/ethanol, phenol/chloroform, DMF/water, DMF/ethanol. As the blank, nonhydrogen-bonding liquids a pure chloroform and hexadecane were used. The polymer annealed in the swollen state displayed the spherulitic texture. This spherulitic structure varied considerably with the swelling agent used, but did not depend on the diisocyanate contents in the polymer.

Formation of these spherulites was accompanied with disruption and reformation of the hydrogen bonds which existed in the original polymer.

Zusammenfassung

Es wurde die kristalline Struktur erforscht, die beim Erwärmen von segmentierten Urethanelastomeren entstanden ist.

Diese Urethanelastomeren wurden vorher in mit polymeren wasserstoffbildenden Flüssigkeiten gequollen. Die Elastomere wurden bei bestimmten unveränderlichen Molverhältnis der Kettenverlängerer zum Makroglykol und bei verändertem Molverhältnis der Diisocyanate gebildet. Als Flüssigkeiten, welche die Wasserstoffbrücken bilden, wurden benutzt: Metakresol/Äthanol, Phenol/Wasser, Phenol/Äthanol, Phenol/Chloroform, DMF/Wasser, DMF/Äthanol.

Als Vergleichsflüssigkeiten, die keine Wasserstoffbrücken bilden, wurden reines Chloroform und Hexadekan verwendet.

Das im gequollenen Zustand aufgeheizte Polymere hatte eine sphärolitische Textur. Die Art der sphärolitischen Textur war von der Art der Wasserstoffbrücken bildenden Flüssigkeiten abhängig. Dagegen hatte der Anteil des Diisocyanates im Polymer keinen Einfluß.

Beim Entstehen dieser Sphärolite wurden bestehende Wasserstoffbrücken des behandelten Original-polymers zerstört und gleichzeitig neue Brücken gebildet.

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

Access this article

Log in via an institution

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

References

  1. Clough, S. B., N. S. Schneider, J. Macromol. Sci.B2, 553 (1968).

    Google Scholar 

  2. Miller, G. W., J. H. Saunders, J. Polymer Sci. A-1,8, 1923 (1970).

    Google Scholar 

  3. Seymour, R. W., S. L. Cooper, J. Polymer Sci.B9, 689 (1971).

    Google Scholar 

  4. Samuels, S. L., G. L. Wilkes, J. Polymer Sci. A-2,11, 807 (1973).

    Google Scholar 

  5. Schneider, N. S., Ch. S. Paik Sung, R. W. Matton, J. L. Illinger, Macromolecules,8, 62 (1975).

    Google Scholar 

  6. Boyarchuk, Yu. V., L. Ya. Rappoport, V. N. Nikitina, N. P. Apukhtina, Vysokomol. Soed.7, 778 (1965).

    Google Scholar 

  7. Trifan, D. S., J. F. Terenzi, J. Polymer Sci.28, 443 (1958).

    Google Scholar 

  8. Tanaka, T., T. Yokoyama, Y. Yamaguchi, J. Polymer Sci. A-1,6, 2137 (1968).

    Google Scholar 

  9. Seymour, R. W., G. M. Estes, S. L. Cooper, Macromolecules3, 579 (1970).

    Google Scholar 

  10. Estes, G. M., R. W. Seymour, S. L. Cooper, Macromolecules4, 452 (1971).

    Google Scholar 

  11. Paik Sung, Ch. S., N. S. Schneider, Macromolecules8, 68 (1975).

    Google Scholar 

  12. Bonart, R., J. Macromol. Sci.-Phys.B2, 115 (1968).

    Google Scholar 

  13. Bonart, R., L. Morbitzer, G. Hentze, J. Macromol. Sci.-Phys.B3, 337 (1969).

    Google Scholar 

  14. Bonart, R., F. H. Müller, J. Macromol. Sci.-Phys.B10, 177 (1974).

    Google Scholar 

  15. Bonart, R., L. Morbitzer, F. H. Müller, J. Macromol. Sci.-Phys.B10, 447 (1974).

    Google Scholar 

  16. Bonart, R., F. H. Müller, J. Macromol. Sci.-Phys.B10, 345 (1974).

    Google Scholar 

  17. Clough, S. B., N. S. Schneider, A. O. King, J. Macromol. Sci.-Phys.B2, 641 (1968).

    Google Scholar 

  18. Kimura, I., H. Ishikara, H. Ohno, N. Yoshikara, S. Nomura, H. Kawai, Macromolecules7, 355 (1974).

    Google Scholar 

  19. Kautsky, A., N. V. Hien, S. L. Cooper, J. Polymer Sci.B8, 353 (1970).

    Google Scholar 

  20. Samuels, S. L., G. Wilkes, J. Polymer Sci.B9, 761 (1971).

    Google Scholar 

  21. Wilkes, G. L., S. L. Samuels, R. G. Crystal, J. Macromol. Sci.-Phys.B10, 203 (1974).

    Google Scholar 

  22. Samuels, S. L., G. L. Wilkes, Polymer Preprints12, 999 (1972).

    Google Scholar 

  23. Chang, Y. J. P., G. L. Wilkes, J. Polymer Sci.-Polym. Phys. Ed.13, 455 (1975).

    Google Scholar 

  24. Gogolewski, S., Kolloid-Z. u. Z. Polymere,251, 502 (1973).

    Google Scholar 

  25. Alfrey, T., Jr., E. F. Gurnee, W. O. Lloyd, J. Polymer Sci.C12, 249 (1966).

    Google Scholar 

  26. Gogolewski, S., J. Phys. E: Sci. Instrum.8, 506 (1975).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Laboratory of Polymers, Institute of Mechanics, Technical University, 65-246 Zielona Gora, Podgorna 50, Poland

    S. Gogolewski

Authors
  1. S. Gogolewski
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

With 15 figures and 1 table

Presented in part at the IUPAC sponsored International Conference on “Modified Polymers, their Preparation and Properties”, Bratislava, July 1–4, 1975, Czechoslovakia

Rights and permissions

Reprints and permissions

About this article

Cite this article

Gogolewski, S. Liquid-induced crystallization and annealing of polyester-urethane elastomers. Colloid & Polymer Sci 256, 323–331 (1978). https://doi.org/10.1007/BF01544325

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01544325

Keywords

Search

Navigation