Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Chemical Compositional Distribution of Ethylene-1-Butene Copolymer Prepared with Heterogeneous Ziegler-Natta Catalyst: TREF and Crystaf Analysis

  • Ko, Young-Soo (Department of Chemical Engineering, Kongju National University) ;
  • Jeon, Jong-Ki (Department of Chemical Engineering, Kongju National University) ;
  • Yim, Jin-Heong (Department of Advanced Materials Engineering, Kongju National University) ;
  • Park, Young-Kwon (Faculty of Environmental Engineering, University of Seoul)
  • Published : 2009.05.31
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Abstract

Ethylene-1-butene copolymers were prepared with $SiO_2$-supported $TiCl_4$ catalyst by changing of 1-butene/ethylene molar ratio in feed, and the resulting copolymers were analyzed using temperature rising elution fractionation (TREF) and crystallization fractionation (Crystaf) methods to investigated the influence of $C_4/C_2$ molar ratio in feed on chemical compositional distribution and other parameters such as molecular weight and its distribution. TREF analysis showed that the copolymers had a broad and bimodal chemical compositional distribution (CCD) regardless of the content of 1-butene in the copolymer. The chemical composition was in the range of 5 to 55 branches per 1,000 carbons for all copolymers prepared in the study. Furthermore, the broader CCD was revealed for the copolymers having the higher content of 1-butene. Crystaf analysis did not showed a bimodal CCD for the copolymers having the 1-butene content of less than 5.1 wt%. The lower crytalline part having 1-butene content in Crystaf analysis was less than of TREF analysis.

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References

  1. M. Zhang, D. T. Lynch, and S. E. Wanke, J. Appl. Polym. Sci., 75, 960 (2000) https://doi.org/10.1002/(SICI)1097-4628(20000214)75:7<960::AID-APP13>3.0.CO;2-R
  2. F. M. Mirabella, J. Polym. Sci. Part A: Polym. Chem., 39, 2800 (2001)
  3. L. Wild, Adv. Polym. Sci., 98, 1 (1991)
  4. C. Gabriel and D. Lilge, Polymer, 42, 297 (2001) https://doi.org/10.1016/S0032-3861(00)00314-1
  5. Y. S. Ko, T. K Han, H. Sadatoshi, and S. I. Woo, J. Polym. Sci. Part A: Polym. Chem., 36, 291 (1998) https://doi.org/10.1002/(SICI)1099-0518(19980130)36:2<291::AID-POLA12>3.0.CO;2-J
  6. Y. S. Ko, T. K Han, J. W. Park, and S. I. Woo, J. Polym. Sci. Part A: Polym. Chem., 35, 2769 (1997) https://doi.org/10.1002/(SICI)1099-0518(19970930)35:13<2769::AID-POLA22>3.0.CO;2-8
  7. Y. V. Kissin, F. M. Maribella, and C. C. Meverden, J. Polym. Sci. Part A: Polym. Chem., 43, 4351 (2005) https://doi.org/10.1002/pola.20875
  8. L. J. D. Britto, J. B. P. Soares, A. Penlidis, and B. Monrabal, J. Polym. Sci. Part A: Polym. Chem., 37, 539 (1999) https://doi.org/10.1002/(SICI)1099-0488(19990315)37:6<539::AID-POLB6>3.0.CO;2-O
  9. Y. V. Kissin and H. A. Fruitwala, J. Appl. Polym. Sci., 106, 3872 (2007) https://doi.org/10.1002/app.27090
  10. Y. S. Ko and J.-K. Jeon, Catal. Today, 132, 178 (2008) https://doi.org/10.1016/j.cattod.2007.12.013
  11. T. E. Nowlin, Y. V. Kissin, and K. P. Wagner, J. Polym. Sci. Part A: Polym. Chem., 26, 755 (1988) https://doi.org/10.1002/pola.1988.080260307
  12. Y. V. Kissin, F. M. Mirabella, and C. C. Meverden, J. Polym. Sci. Part A: Polym. Chem., 43, 4351 (2005) https://doi.org/10.1002/pola.20875
  13. M. Peeters, B. Goderis, H. Reynaers, and V. Mathot, J. Polym. Sci. Part B: Polym. Phys., 37, 83 (1999) https://doi.org/10.1002/(SICI)1099-0488(19990101)37:1<83::AID-POLB8>3.0.CO;2-#
  14. M. Zhang, D. T. Lynch, and S. E. Wanke, Polymer, 42, 3067 (2001) https://doi.org/10.1016/S0032-3861(00)00667-4
  15. D. M. Sarzotti, J. B. P. Soares, L. C. Simon, and L. J. D. Britto, Polymer, 45, 4787 (2004) https://doi.org/10.1016/j.polymer.2004.04.072
  16. S. Anantawarskul, J. B. P. Soares, and P. M. Wood-Adams, Adv. Polym. Sci., 182, 1 (2005) https://doi.org/10.1007/b135559