Table of Contents Author Guidelines Submit a Manuscript
International Journal of Polymer Science
Volume 2014, Article ID 549031, 10 pages
http://dx.doi.org/10.1155/2014/549031
Research Article

Correlation of Polymerization Conditions with Thermal and Mechanical Properties of Polyethylenes Made with Ziegler-Natta Catalysts

1Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
2Department of Chemical Engineering, University of Waterloo, Waterloo, ON, Canada N2L 3G1

Received 14 October 2013; Revised 23 December 2013; Accepted 25 December 2013; Published 11 February 2014

Academic Editor: Giridhar Madras

Copyright © 2014 M. Anwar Parvez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. P. Pokasermsong and P. Praserthdam, “Comparison of activity of Ziegler-Natta catalysts prepared by recrystallization and chemical reaction methods towards polymerization of ethylene,” Engineering Journal, vol. 13, no. 1, pp. 57–64, 2009. View at Publisher · View at Google Scholar · View at Scopus
  2. J. X. Wong, S. N. Gan, and M. J. Aishah, “Chromium(III) based Ziegler-Natta catalysts for olefin polymerization,” Sains Malaysiana, vol. 40, no. 7, pp. 771–779, 2011. View at Google Scholar · View at Scopus
  3. E. Magni and G. A. Somorjai, “Ethylene and propylene polymerization catalyzed by a model Ziegler-Natta catalyst prepared by gas phase deposition of magnesium chloride and titanium chloride thin films,” Catalysis Letters, vol. 35, no. 3-4, pp. 205–214, 1995. View at Publisher · View at Google Scholar · View at Scopus
  4. I. A. Hussein and T. Hameed, “Influence of branching characteristics on thermal and mechanical properties of Ziegler-Natta and metallocene hexene linear low-density polyethylene blends with low-density polyethylene,” Journal of Applied Polymer Science, vol. 97, no. 6, pp. 2488–2498, 2005. View at Publisher · View at Google Scholar · View at Scopus
  5. T. B. Mikenas, V. A. Zakharov, L. G. Echevskaya, and M. A. Matsko, “Kinetic features of ethylene polymerization over supported catalysts [2,6-Bis(imino)pyridyl iron dichloride/magnesium dichloride] with AlR 3 as an activator,” Journal of Polymer Science A, vol. 45, no. 22, pp. 5057–5066, 2007. View at Publisher · View at Google Scholar · View at Scopus
  6. J. B. P. Soares and A. E. Hamielec, “Kinetics of propylene polymerization with a non-supported heterogeneous Ziegler-Natta catalyst—effect of hydrogen on rate of polymerization, stereoregularity, and molecular weight distribution,” Polymer, vol. 37, no. 20, pp. 4607–4614, 1996. View at Publisher · View at Google Scholar · View at Scopus
  7. M. I. Nikolaeva, M. A. Matsko, T. B. Mikenas, L. G. Echevskaya, and V. A. Zakharov, “Copolymerization of ethylene with α-olefins over supported titanium-magnesium catalysts. I. Effect of polymerization duration on comonomer content and the molecular weight distribution of copolymers,” Journal of Applied Polymer Science, vol. 125, no. 3, pp. 2034–2041, 2012. View at Publisher · View at Google Scholar · View at Scopus
  8. V. Zakharov, M. Matsko, L. Echevskaya, and T. Mikenas, “Ethylene polymerization over supported titanium-magnesium catalysts: heterogeneity of active centers and effect of catalyst composition on the molecular mass distribution of polymer,” Macromolecular Symposia, vol. 260, pp. 184–188, 2007. View at Publisher · View at Google Scholar · View at Scopus
  9. M. I. Nikolaeva, T. B. Mikenas, M. A. Matsko, L. G. Echevskaya, and V. A. Zakharov, “Ethylene polymerization over supported titanium-magnesium catalysts: effect of polymerization parameters on the molecular weight distribution of polyethylene,” Journal of Applied Polymer Science, vol. 122, no. 5, pp. 3092–3101, 2011. View at Publisher · View at Google Scholar · View at Scopus
  10. L. Moballegh and S. Hakim, “Molecularweight bimodality of ethylene/1-butene in a two-step polymerization process: effects of polymerization conditions,” Iranian Polymer Journal, vol. 20, no. 6, pp. 513–521, 2011. View at Google Scholar · View at Scopus
  11. Y. J. Shin, H. X. Zhang, K. B. Yoon, and D. H. Lee, “Preparation of ultra high molecular weight polyethylene with MgCl2/TiCl4 catalysts: effect of temperature and pressure,” Macromolecular Research, vol. 18, no. 10, pp. 951–955, 2010. View at Publisher · View at Google Scholar · View at Scopus
  12. B. Wunderlich, “Crystallization during polymerization,” Advances in Polymer Science, vol. 5, pp. 568–619, 1968. View at Google Scholar
  13. A. Muñoz-Escalona and A. Parada, “Factors affecting the nascent structure and morphology of polyethylene obtained by heterogeneous Ziegler-Natta catalysts: 2. Crystallinity and melting behaviour,” Polymer, vol. 20, no. 7, pp. 859–866, 1979. View at Google Scholar · View at Scopus
  14. M. C. Forte and F. M. B. Coutinho, “Highly active magnesium chloride supported Ziegler-Natta catalysts with controlled morphology,” European Polymer Journal, vol. 32, no. 2, pp. 223–231, 1996. View at Google Scholar · View at Scopus
  15. T. Hameed and I. A. Hussein, “Rheological study of the influence of MW and comonomer type on the miscibility of m-LLDPE and LDPE blends,” Polymer, vol. 43, no. 25, pp. 6911–6929, 2002. View at Publisher · View at Google Scholar · View at Scopus
  16. L. H. Sperling, Introduction to Physical Polymer Science, Wiley-Interscience, New York, NY, USA, 4th edition, 2006.