Advertisement

Journal of Thermal Analysis and Calorimetry

, Volume 95, Issue 1, pp 215–220 | Cite as

Effect of β-nucleation on crystallization of photodegraded polypropylene

  • Jana Výchopňová
  • R. Čermák
  • M. Obadal
  • V. Verney
  • Sophie Commereuc
Article

Abstract

The work deals with crystallization of photodegraded polypropylene containing various amounts of β-nucleating agent based on N,N′-dicyclohexylnaphthalene-2,6-dicarboxamide. Compression-moulded samples were irradiated by UV-light, melted and subsequently non-isothermally crystallized. The results showed that the crystallization temperature decreased with increasing irradiation time. The irradiation caused the splitting of crystallization exotherms into two peaks indicating two crystallization mechanisms. The presence of β-nucleating agent in the material suppressed the peak splitting; the higher was the amount of nucleating agent in the sample, the later was the splitting observed.

Keywords

crystallization photooxidation polymorphism 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    J. Varga, J. Macromol. Sci. Phys., 41 (2002) 1121.CrossRefGoogle Scholar
  2. 2.
    A. Menyhárd, J. Varga and G. Molnár, J. Therm. Anal. Cal., 83 (2006) 625.CrossRefGoogle Scholar
  3. 3.
    J. Kotek, M. Raab, J. Baldrian and W. Grellmann, J. Appl. Polym. Sci., 85 (2002) 1174.CrossRefGoogle Scholar
  4. 4.
    M. Obadal, R. Čermák, N. Baran, K. Stoklasa and J. Čimonák, Int. Polym. Proc., 19 (2004) 35.Google Scholar
  5. 5.
    J. Výchopňová, V. Habrová, M. Obadal, R. Čermák and R. Čabla, J. Therm. Anal. Cal., 86 (2006) 687.CrossRefGoogle Scholar
  6. 6.
    C. Marco, M. A. Gomez, G. Ellis and J. M. Arribas, J. Appl. Polym. Sci., 86 (2002) 531.CrossRefGoogle Scholar
  7. 7.
    J. Varga and A. Menyhárd, Macromolecules, 40 (2007) 2422.CrossRefGoogle Scholar
  8. 8.
    J. Kotek, I. Kelnar, J. Baldrian and M. Raab, Eur. Polym. J., 40 (2004) 2731.CrossRefGoogle Scholar
  9. 9.
    M. Obadal, R. Čermák, M. Raab, V. Verney, S. Commereuc and F. Fraïsse, Polym. Degrad. Stab., 88 (2005) 532.CrossRefGoogle Scholar
  10. 10.
    J. Výchopňová, R. Čermák, M. Obadal, M. Raab, V. Verney and S. Commereuc, Polym. Degrad. Stab., 92 (2007) 1763.CrossRefGoogle Scholar
  11. 11.
    S. Bruckner, V. S. Meille, V. Petraccone and B. Pirozzi, Prog. Polym. Sci., 16 (1991) 361.CrossRefGoogle Scholar
  12. 12.
    B. Lotz, Polymer, 39 (1998) 4561.CrossRefGoogle Scholar
  13. 13.
    B. Lotz, J. Macromol. Sci. Phys., 41 (2002) 685.CrossRefGoogle Scholar
  14. 14.
    J. Varga, J. Therm. Anal. Cal., 31 (1986) 165.CrossRefGoogle Scholar
  15. 15.
    M. S. Rabello and J. R. White, Polym. Degrad. Stab., 56 (1997) 55.CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  • Jana Výchopňová
    • 1
  • R. Čermák
    • 1
  • M. Obadal
    • 2
  • V. Verney
    • 3
  • Sophie Commereuc
    • 3
  1. 1.Department of Polymer EngineeringTomas Bata University in Zlín, Faculty of TechnologyZlínCzech Republic
  2. 2.Borealis Polyolefine GmbHLinzAustria
  3. 3.Molecular and Macromolecular Photochemistry LaboratoryBlaise Pascal University/CNRSAubière, CedexFrance

Personalised recommendations