Polymer Bulletin

, Volume 32, Issue 4, pp 471–477 | Cite as

Homogeneous nucleation of the dispersed crystallisable component of immiscible polymer blends

  • O. O. Santana
  • A. J. Müller


Immiscible melt mixed blends of a crystallisable polyolefin (isotactic polypropylene, PP) and atactic polystyrene (PS) were prepared in a wide composition range. It was found that when PP is the major component in the blend its crystallisation behaviour is not affected by blending it with PS. However if PP is the minor component, it will be dispersed in the immiscible PS matrix, hence the nucleation mechanism changes from predominantly heterogeneous to predominantly homogeneous as long as the size of the dispersed PP droplets is below a critical value (of the order of 1–2 μm).


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Utracki LA (1989) Polymer Alloys and Blends: Thermodynamics and Rheology. Hanser, New YorkGoogle Scholar
  2. 2.
    Folkes MJ, Hope PS, Eds. (1993) Polymer Blends and Alloys. Blackie Academic & Professional, LondonGoogle Scholar
  3. 3.
    Müller AJ, Balsamo V, Rosales CM (1992) Polym Networks and Blends 2: 215Google Scholar
  4. 4.
    Balsamo V, Müller AJ (1993) J Mat Sci Lett 12: 1457CrossRefGoogle Scholar
  5. 5.
    Müller AJ, Balsamo V, Rosales CM, Da Silva F, Sáez AE, in press, Polym Eng & SciGoogle Scholar
  6. 6.
    Müller AJ, Balsamo V, in press, vol. V of the series “Advances in Polymer Blends and Alloys Technology”, Ed. K. Finlayson, Technomic Pub. Co.Google Scholar
  7. 7.
    Burns JR, Turnbull D (1966) J Appl Phys 37: 4021Google Scholar
  8. 8.
    Cormia RL, Price FP, Turnbull D (1962) J Chem Phys 37: 1333Google Scholar
  9. 9.
    Baïtoul M, Saint-Guirons H, Xans P, Monge Ph (1981) Eur Polym J 17: 1281CrossRefGoogle Scholar
  10. 10.
    Muller AJ, Santana OO, Rojas JL, to be published.Google Scholar
  11. 11.
    Bartczak Z, Galeski A, Krasnikova NP (1987) Polymer 28: 1627Google Scholar

Copyright information

© Springer-Verlag 1994

Authors and Affiliations

  • O. O. Santana
    • 1
  • A. J. Müller
    • 1
  1. 1.Grupo de Polímeros USB, Departamento de Ciencia de los MaterialesUniversidad Simón BolívarCaracasVenezuela

Personalised recommendations