Polymer Bulletin

, Volume 58, Issue 1, pp 201–211 | Cite as

Effect of diluent on the gel point and mechanical properties of polyurethane networks

  • Andrea Ďuračková
  • Helena Valentová
  • Miroslava Dušková-SmrčkováEmail author
  • Karel Dušek


Gel point conversions and equilibrium tensile moduli of polyester-based polyurethane networks were determined for different dilutions during network formation. Also, the limiting dilution beyond which the network was not formed at full conversion of functional groups was determined. It ranged between 92 and 94% of diluent. The scaling dependences against the reference states – the ring-free case and the limiting dilution case – showed that the excluded volume effects were operative and structural changes associated with cyclization affected the rates of both the intramolecular and the intermolecular reactions.


Triol Volume Phase Transition Dibutyltin Dilaurate Exclude Volume Effect Intermolecular Reaction 
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.


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  1. 1.
    Dušek K, Prins W (1969) Adv Polym Sci 6:1Google Scholar
  2. 2.
    Stepto RFT (Ed) (1998) Polymer Networks, Principles of their Formation, Structure and Properties. Blackie Academic & Professional, Thomson Science, London, New York, Philadelphia, Weinheim, pp 1-92Google Scholar
  3. 3.
    Dušek K, Dušková-Smrčková M (2000) Progr Polym Sci 25:1215Google Scholar
  4. 4.
    Dušek K (1967) J Polym Sci Pt C 16:1289Google Scholar
  5. 5.
    Dušková-Smrčková M, Dušek K (2003) Macromol Symp 198:259Google Scholar
  6. 6.
    Pascault J-P, Sautereau H, Verdu J, Williams RJJ (2002) M Dekker, New York, BaselGoogle Scholar
  7. 7.
    Dušek K, Patterson D (1968) J Polym Sci A-2 6:1209Google Scholar
  8. 8.
    Responsive Gels. Volume Phase Transition, Springer, Berlin, Heidelberg, New York, Dušek K (Ed) (1993) Adv Polym Sci, Vols, 109, 110Google Scholar
  9. 9.
    Dušek K, Gordon M, Ross-Murphy SB (1978) Macromolecules 11:236Google Scholar
  10. 10.
    Ilavský M, Dušek K (1986) Macromolecules 19:2139Google Scholar
  11. 11.
    Suematsu K (2002) Adv Polym Sci 156:137Google Scholar
  12. 12.
    Dušek K, Ilavský M, (1983) J Polym Sci Polym Phys 21:1323Google Scholar
  13. 13.
    Ilavský M, Bogdanova L, Dušek K (1984) J Polym Sci, Polym Phys Ed 22:265Google Scholar
  14. 14.
    Dušek K (1982) Network Formation by Chain Crosslinking (Co)Polymerization in Development in Polymerisation 3, Haward RN (ed), Applied Science Publ, Barking, pp143-206Google Scholar
  15. 15.
    Dusek K, Galina H, Mikes J (1980) Polym Bull 3:19Google Scholar
  16. 16.
    Lewin LA, Douglas CB, Dušek K, Dušková-Smrčková M, Vlasák P (2005) Europ Coatings 81:21Google Scholar
  17. 17.
    Vlasák P, Dušková-Smrčková M, Simonsick, WJ Jr., Dušek K (2003). Polymer for Advanced Technologies (2003), Ft. Lauderdale, Abstract Book Pg. 219Google Scholar
  18. 18.
    Weissmüller M, Burchard W (1997) Polymer Int 44:380Google Scholar
  19. 19.
    Trappe V, Bauer J, Weissmüller M, Burchard W (1997) Macromolecules 30:2365Google Scholar
  20. 20.
    Šomvársky J, Dušek K, Smrčková M (1998) Comput Theor Polym Sci 8:201Google Scholar
  21. 21.
    Gordon M, Temple WB (1972) Makromol Chem 152:277Google Scholar
  22. 22.
    Dušek K, Vojta V (1977) Brit Polym J 9:164Google Scholar
  23. 23.
    Stepto RFT, Cail JI, Taylor DJR, Ward IM, Jones RA (2003) Macromol Symp 195:1Google Scholar
  24. 24.
    Cail JI, Stepto RFT, Taylor DJR (2001) Macromol Symp 171:19Google Scholar
  25. 25.
    Lang M, Goeritz D, Kreitmeier S (2005) Macromolecules 38:2515Google Scholar
  26. 26.
    Sarmoria C, Valles EM, Miller DR (1986) Makromol Chem, Macromol Symp 2:69Google Scholar
  27. 27.
    Erman B, Mark JE (1997) Structure and Properties of Rubberlike Networks. Oxford University Press, Oxford, New YorkGoogle Scholar
  28. 28.
    Adam M, Lairez D (1996) Sol-Gel Transition, in Physical Properties of Polymeric Gels. Cohen-Addad JP (ed), J Wiley & Sons, Chichester, pp 87-142Google Scholar
  29. 29.
    Adam M (1981) Pure Appl Chem 53:1489Google Scholar
  30. 30.
    Gautier-Manuel M, Guyon E (1980) J Phys (Paris) 41:503Google Scholar

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Andrea Ďuračková
    • 1
    • 2
  • Helena Valentová
    • 3
  • Miroslava Dušková-Smrčková
    • 1
    • 3
    Email author
  • Karel Dušek
    • 1
  1. 1.Institute of Macromolecular ChemistryAcademy of Sciences of the Czech RepublicPrague 6Czech Republic
  2. 2.Tomas Bata UniversityZlínCzech Republic
  3. 3.Department of Macromolecular Physics, Faculty of Mathematics and PhysicsCharles UniversityPrague 8Czech Republic

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