화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korea Polymer Journal, Vol.8, No.1, 34-43, February, 2000
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Melt Rheology of Ethylene 1-Octene Copolymer Blends Synthesized by Ziegler-Natta and Metallocene Catalysts
Hak Lim Kim, Dipak Rana1, Hanjin Kwag, and Soonja Choe†
  • Department of Chemical Engineering, Institute of Polymer Science and Engineering, Inha University, Inchon 402-751, Korea
  • 1Department of Chemistry, McMaster University, Hamilton, Ontario, L8S 4M1, CANADA, Canada
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The melt rheology of four binary blends of ethylene 1-octene copolymers (EOCs) which consist of one component by Ziegler-Natta and another by metallocene catalysts, was studied to elucidate miscibility in the melt by using torsion rheometer at 200℃ and different shear rates. The four blend systems, designated into the FA+FA, SF+FM, SF+FM, RF+EN, and RF+PL blend, are divided and interpreted based on the melt index (MI), the density and the comonomer contents. The melt viscosity such as η'', η", and N* is weight average value if the comonomer contents are similar, otherwise they show different manager. The experimental results are analyzed based on the Cole-Cole plot of logη'' versus logη", the logarithmic plots of the dynamic storage modulus (G'') versus the dynamic loss modulus (G") for various blend compositions, and the melt viscosity of η'', η", and η* as a function of blend compositions. As a consequence, the FA+FA blend is miscible, but the SF+FM, FR+EN, and RF+PL blends are not in the melt. Thus miscibility of the blends studied in this communication is suggested to strongly influence by the comonomer contents rather than the density or the MI.
  1. Han CD, Rheology in Polymer Processing, Academic Press, New York (1976)
  2. Cogswell FN, Polymer Melt Rheology, John Wiley and Sons, New York (1981)
  3. Utracki LA, Polymer Alloys and Blends: Thermodynamic and Rheology, Hanser, Munich (1989)
  4. Chien JCW, He D, J. Polym. Sci. A: Polym. Chem., 29, 1585 (1991) 
  5. Bensason S, Minick J, Moet A, Chum S, Hiltner A, Baer E, J. Polym. Sci. B: Polym. Phys., 34(7), 1301 (1996) 
  6. Bensason S, Nazarenko S, Chum S, Hiltner A, Baer E, Polymer, 38(15), 3913 (1997) 
  7. Chum PS, Kao CI, Knight GW, Plast. Eng., 51(6), 21 (1995)
  8. Koch KC, Volkenburgh BV, ANTEC, 41, 1879 (1995)
  9. Yamaguchi M, Nitta KH, Miyata H, Masuda T, J. Appl. Polym. Sci., 63(4), 467 (1997) 
  10. Acierno D, La Mantia FP, Curto D, Polym. Bull., 11, 223 (1984)
  11. La Mantia FP, Acierno D, Plast. Rubber Proc. Appl., 5, 183 (1985)
  12. Acierno D, La Mantia FP, Valenza A, Polym. Eng. Sci., 26, 28 (1986) 
  13. Schlund B, Utracki LA, Polym. Eng. Sci., 27, 359 (1987) 
  14. Utracki LA, Schlund B, Polym. Eng. Sci., 27, 1512 (1987) 
  15. Utracki LA, Schlund B, Polym. Eng. Sci., 27, 1523 (1987) 
  16. Yan D, Wang WJ, Zhu S, Polymer, 40(7), 1737 (1999) 
  17. Vega JF, Munozescalona A, Santamaria A, Munoz ME, Lafuente P, Macromolecules, 29(3), 960 (1996) 
  18. Munozescalona A, Lafuente P, Vega JF, Munoz ME, Santamaria A, Polymer, 38(3), 589 (1997) 
  19. Lee H, Cho K, Ahn TK, Choe S, Kim IJ, Park I, Lee BH, J. Polym. Sci. B: Polym. Phys., 35(10), 1633 (1997) 
  20. Cho KC, Lee BH, Hwang KM, Lee HS, Choe SJ, Polym. Eng. Sci., 38(12), 1969 (1998) 
  21. Cho K, Ahn TK, Park I, Lee BH, Choe S, J. Ind. Eng. Chem., 3(2), 147 (1997)
  22. Cho K, Ahn TK, Lee BH, Choe S, J. Appl. Polym. Sci., 63(10), 1265 (1997) 
  23. Rana D, Lee CH, Cho K, Lee BH, Choe S, J. Appl. Polym. Sci., 69(12), 2441 (1998) 
  24. Lisovskii A, Shuster M, Gishvoliner M, Lidor G, Eisen MS, J. Polym. Sci. A: Polym. Chem., 36(17), 3063 (1998) 
  25. Han TK, Choi HK, Jeung DW, Ko YS, Woo SI, Macromol. Chem. Phys., 196, 2637 (1995) 
  26. Kunzer R, Wieners G, Kunstst.-Plast Eur., May, 17 (1996)
  27. Rana D, Cho K, Woo T, Lee BH, Choe S, J. Appl. Polym. Sci., 74(5), 1169 (1999) 
  28. Rana D, Kim HL, Rhee J, Cho K, Woo T, Lee BH, Choe S, J. Appl. Polym. Sci., in press
  29. Cole KS, Cole RH, J. Chem. Phys., 9, 341 (1941) 
  30. Chung HK, Han CD, J. Appl. Polym. Sci., 29, 2205 (1984) 
  31. Han CD, Chung HK, J. Appl. Polym. Sci., 30, 4431 (1985) 
  32. Han CD, J. Appl. Polym. Sci., 32, 3809 (1986) 
  33. Han CD, Kim J, J. Polym. Sci. B: Polym. Phys., 25, 1741 (1987) 
  34. Yang HH, Han CD, Kim JK, Polymer, 35(7), 1503 (1994) 
  35. Utracki LA, Kamal MR, Polym. Eng. Sci., 22, 96 (1982) 
  36. Utracki LA, Schlund B, Polym. Eng. Sci., 27, 1512 (1987) 
  37. Prest WM, Porter RS, J. Polym. Sci. B: Polym. Phys., 10, 1639 (1972)
  38. Roland CM, J. Polym. Sci. B: Polym. Phys., 26, 839 (1988) 
  39. Wu S, J. Polym. Sci. B: Polym. Phys., 25, 557 (1987) 
  40. Fujimura R, Iwakura K, Int. Chem. Eng., 10, 683 (1970)
  41. Belaribi C, Marin G, Monge P, Eur. Polym. J., 22, 487 (1986) 
  42. Kammer HW, Socher M, Acta Polym., 33, 658 (1982) 
  43. Wisniewsky C, Marin G, Monge P, Eur. Polym. J., 20, 691 (1984) 
  44. Aoki Y, Polym. J., 16, 431 (1984) 
  45. Martuscelli E, Macromol. Chem. Rapid Commun., 5, 255 (1984)