Advertisement

Fibers and Polymers

, Volume 4, Issue 3, pp 107–113 | Cite as

Chemical modification of isotactic polypropylene by melt blending

  • Jun Young Kim
  • Eun Su Seo
  • Dae Soon Park
  • Kwang Min Park
  • Seong Wook Kang
  • Chang Hyung Lee
  • Seong Hun Kim
Article

Abstract

The branched polypropylene (b-PP) was prepared by melt blending process with initiator, antioxidant, and functional monomers to improve the melt strength through the melt grafting. The melt flow index (MFI) of theb-PP was increased with increasing the initiator content. On the introduction of the alkylamine as the branching agents the MFI of theb-PP was increased, while that of theb-PP with the pentaerythritol triacrylate (PT) was decreased. It may be caused by the chain scission of thei-PP backbone due to the reduced thermal stability of thei-PP on the melt blending. The MFI of theb-PP without the antioxidant was increased due to the chain scission occurred during the melt processing, while on the introduction of the antioxidant, the MFI of theb-PP was decreased. The crystallization temperature of theb-PP was higher than that of PP, which was attributed to the branched chain structure. It was found that the PT was the most effective functional monomers for enhancing the melt properties of theb-PP.

Keywords

Branching Gel content Isotactic polypropylene Melt strength 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    B. K. Kim and C. H. Choi,J. Appl. Polym. Sci.,60, 2199 (1996).CrossRefGoogle Scholar
  2. 2.
    B. K. Kim and I. H. Do,J. Appl. Polym. Sci.,61, 439 (1996).CrossRefGoogle Scholar
  3. 3.
    E. Borsig, A. Fielerova, and M. Lazar,J. Macromol Sci-Cem.,A16, 513 (1981).CrossRefGoogle Scholar
  4. 4.
    J. L. Throne in “Thermoforming”, Hanser Publishers, Munich, Vienna, New York, 1987.Google Scholar
  5. 5.
    D. V. Rosato in “Blow Molding Handbook”, Hanser Publishers, Munich, Vienna, New York, 1987.Google Scholar
  6. 6.
    J. N. McDonald in “Encyclopedia of Polymer Science and Engineering”, 2nd ed. (H. F. Mark, N. M. Bikales, C. G. Overberger, and G, Menges Eds.), Vol. 16, p.807, John Wiley & Sons Inc., New York, 1989.Google Scholar
  7. 7.
    E. Kokko, A. Malmberg, and J. V. Seppala,J. Polym. Sci., Part A, Polym. Chem.,38, 676 (2000).CrossRefGoogle Scholar
  8. 8.
    T. Noma, T. Murata, Y. Masubuchi, J. Takimoto, and K. Koyama,Polym. Prep. Jpn.,46, 3829 (1997).Google Scholar
  9. 9.
    S. Lieber and H. H. Brintzinger,Macromolecules,33, 9192 (2000).CrossRefGoogle Scholar
  10. 10.
    E. Kolodka, W. J. Wang, S. Zhu, and A. E. Hamielec,Macromol. Rapid Commun.,23, 470 (2002).CrossRefGoogle Scholar
  11. 11.
    S. M. Gawish, A. Kantouch, A. M. El-Naggar, and S. Mosleh,J. Appl. Polym. Sci.,44, 1671 (1992).CrossRefGoogle Scholar
  12. 12.
    E. A. Hegazy,Polymer,33, 96 (1992).CrossRefGoogle Scholar
  13. 13.
    R. Rengarajan, M. Vicic, and S. Lee,Polymer,30, 933 (1989).CrossRefGoogle Scholar
  14. 14.
    S. Lee, R. Rengarajan, and V. R. Parameswaran,J. Appl. Polym. Sci.,41, 1891 (1990).CrossRefGoogle Scholar
  15. 15.
    Y. Pan, J. Ruan, and D. Zhou,J. Appl. Polym. Sci.,65, 1905 (1997).CrossRefGoogle Scholar
  16. 16.
    I. Chodak and M. Lazar,J. Appl. Polym. Sci.,32, 279 (1986).CrossRefGoogle Scholar
  17. 17.
    B. Wong and W. E. Baker,Polymer,38, 2781 (1997).CrossRefGoogle Scholar
  18. 18.
    A. Laurent, C. M. Steven, and B. M. Robert,Polymer,39, 2571 (1998).CrossRefGoogle Scholar
  19. 19.
    E. Borsig, E. Malcherova, and M. Lazar,Polym. Int.,30, 367 (1993).CrossRefGoogle Scholar
  20. 20.
    M. Xanthos in “Reactive Extrusion: Principles and Practice”, New York, Hanser, 1992.Google Scholar
  21. 21.
    L. S. Huang, S. H. Goh, and S. H. Ong in “The Chemistry of Free Radicals”, London, Edward Arnold, 1973.Google Scholar
  22. 22.
    B. De Roover, M. Sclavons, V. Carlier, J. Devaux, R. Legras, and A. Momtaz,J. Polym. Sci., Part A, Polym. Chem.,33, 829 (1995).CrossRefGoogle Scholar
  23. 23.
    M. Sclavons, V. Carlier, J. B. De Roover, P. Franquinet, J. Devaux, and R. Legras,J. Appl. Polym. Sci.,62, 1205 (1996).CrossRefGoogle Scholar
  24. 24.
    X. Wang, C. Tzobanakis, and G. L. Rempel,J. Appl. Polym. Sci.,61, 1395 (1996).CrossRefGoogle Scholar
  25. 25.
    H. C. Kim and Y. D. Kong,Polym. Sci. Tech.,7, 59 (1996).Google Scholar
  26. 26.
    R. P. Iliev, C. B. Park, G. Liu, and F. Liu,ANTEC, 934 (2000).Google Scholar
  27. 27.
    V. V. DeMaio, D. Dong, and A. Gupta,ANTEC, 236 (2000).Google Scholar
  28. 28.
    D. W. Yu, S. K. Dey, F. Pringgosusanto, and M. Xanthos,ANTEC, 596 (2000).Google Scholar
  29. 29.
    P. J. Phillips and Y. H. Kao,Polymer,27, 1679 (1986).CrossRefGoogle Scholar
  30. 30.
    R. M. Gohil and P. J. Phillips,Polymer,27, 1687 (1986).CrossRefGoogle Scholar
  31. 31.
    A. J. DeNicola, A. F. Galambos, and M. D. Wolkowicz in “Polymeric Materials Science and Engineering”, ACS Fall Meeting, Vol. 67, p.106, Washington DC, USA, 1992.Google Scholar
  32. 32.
    F. Rybnikar, L. Pospisil, and J. Jankar,J. Mater. Sci. Lett.,9, 499 (1990).Google Scholar
  33. 33.
    A. R. Oromehie, S. A. Hashemi, I. G. Meldrum, and D. N. Waters,Polym. Int.,42, 117 (1997).CrossRefGoogle Scholar
  34. 34.
    D. Shi, J. H. Yang, Z. H. Yao, Y. Wang, H. L. Huang, W. Jing, J. H. Yin, and G. Costa,Polymer,42, 5549 (2001).CrossRefGoogle Scholar
  35. 35.
    Y. J. Sun, G. H. Hu, M. Lambla, and H. K. Kotlar,Polymer,37, 4119 (1996).CrossRefGoogle Scholar
  36. 36.
    S. H. P. Bettini and J. A. M. Agnelli,Polym. Test.,19, 3 (2000).CrossRefGoogle Scholar

Copyright information

© The Korean Fiber Society 2003

Authors and Affiliations

  • Jun Young Kim
    • 1
  • Eun Su Seo
    • 1
  • Dae Soon Park
    • 2
    • 1
  • Kwang Min Park
    • 3
    • 1
  • Seong Wook Kang
    • 4
    • 1
  • Chang Hyung Lee
    • 5
    • 1
  • Seong Hun Kim
    • 1
  1. 1.Department of Fiber & Polymer Engineering, Center for Advanced Functional PolymersHanyang UniversitySeoulKorea
  2. 2.Performance Material DivisionKyonggi-DoKorea
  3. 3.PVC R&D CenterYu Seong, Science Town DaejeonKorea
  4. 4.Polymer Processing Technology TeamLG Chem. Ltd. Tech CenterDaejeonKorea
  5. 5.Department of Medical Devices & Radiation HealthKorea Food & Drug AdministrationSeoulKorea

Personalised recommendations