화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.11, No.1, 62-68, February, 2003
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Effects of Annealing on Structure and Properties of TLCP/PEN/PET Ternary Blend Fibers
Jun Young Kim, Eun Su Seo, Seong Hun Kim†, and Takeshi Kikutani1
  • Department of Fiber & Polymer Engineering,Center for Advanced Functional Polymers, Hanyang University, Seoul 133-791, Korea
  • 1Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguroku, Tokyo 152, Japan
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Thermotropic liquid crystalline polymer (TLCP)/poly(ethylene 2,6-naphthalate) (PEN)/poly(ethylene terephthalate) (PET) ternary blends were prepared by melt blending, and were melt-spun to fibers at various spinning speeds in an effort to improve fiber performance and processability. Structure and property relationship of TLCP/PEN/PET ternary blend fibers and effects of annealing on those were investigated. The mechanical properties of ternary blend fibers could be significantly improved by annealing, which were attributed to the development of more ordered crystallites and the formation of more perfect crystalline structures. TLCP/PEN/PET ternary blend fibers that annealed at 180 ℃ for 2 h, exhibited the highest values of tensile strength and modulus. The double melting behaviors observed in the annealed ternary blend fibers depended on annealing temperature and time, which might be caused by different lamellae thickness distribution as a result of the melting-reorganization process during the DSC scans.
Keywords:thermotropic liquid crystalline polymer;poly(ethylene 2,6-naphthalate);poly(ethylene terephthalate);melt spinning;annealing
  1. Amano M, Nakagawa K, Polymer, 28, 263 (1987) 
  2. Jung SH, Kim SC, Polym. J., 20, 73 (1988) 
  3. Kiss G, Polym. Eng. Sci., 27, 410 (1987) 
  4. Sun LM, Sakamoto T, Ueta S, Koga K, Takayanagi M, Polym. J., 26, 939 (1994) 
  5. Sun LM, Sakamoto T, Ueta S, Koga K, Takayanagi M, Polym. J., 26, 953 (1994) 
  6. Kim SH, Hong SM, Hwang SS, Yoo HO, J. Appl. Polym. Sci., 74(10), 2448 (1999) 
  7. Lee JG, Kim SH, J. Korean Fiber Soc., 34(12), 877 (1997)
  8. Ni YS, Jin JI, Jeon SJ, Lee BH, Jo BW, Korea Polym. J., 6(5), 349 (1998)
  9. Seo Y, Kim HJ, Kim B, Hong SM, Hwang SS, Kim KU, Korea Polym. J., 9(4), 238 (2001)
  10. Bretas RE, Baird DG, Polymer, 24, 5233 (1992) 
  11. Lee WC, Dibenedetto T, Polymer, 34, 684 (1993) 
  12. Hu GH, Lambla M, J. Polym. Sci. A: Polym. Chem., 33(1), 97 (1995) 
  13. Hsieh TT, Tiu C, Hsieh KH, Simon GP, Korea Polym. J., 6(1), 44 (1998)
  14. Saywer LC, Jaffe M, J. Mater. Sci., 21, 1897 (1986) 
  15. Bassett B, Yee AF, Polym. Compos., 11, 10 (1990) 
  16. Bedia EL, Murakami S, Kitade T, Kohjiya S, Polymer, 42(17), 7299 (2001) 
  17. Rwei SP, Polym. Eng. Sci., 39(12), 2475 (1999) 
  18. Kyotani M, Pudjiastut W, Saeed AJ, J. Macromol. Sci.-Phys., B38, 197 (1999)
  19. Lee JK, Lee KH, Jin BS, Macromol. Res., 10(1), 44 (2002)
  20. Stewart ME, Cox AJ, Naylor DM, Polymer, 34, 4060 (1993) 
  21. Park JK, Jeong BJ, Kim SH, Polym.(Korea), 24(1), 113 (2000)
  22. Kim SH, Kang SW, Park JK, Park YH, J. Appl. Polym. Sci., 70(6), 1065 (1998) 
  23. Bae WJ, Jo WH, Park YH, Macromol. Res., 10(3), 145 (2002)
  24. Blundell DJ, Osborn BN, Polymer, 24, 953 (1983) 
  25. Ziabicki A, Kawai H, High-Speed Fiber Spinning, John Wiley & Sons, New York (1985)
  26. Cheng SZD, Wu ZQ, Wunderlich B, Macromolecules, 20, 2802 (1987) 
  27. Kim HG, Robertson RE, J. Polym. Sci. B: Polym. Phys., 36(10), 1757 (1998) 
  28. Blundell DJ, Polymer, 37, 1167 (1987) 
  29. Medellin-Rodriguez FJ, Phillips PJ, Lin JS, Avila-Orta CA, J. Polym. Sci. B: Polym. Phys., 36(5), 763 (1998) 
  30. Wu SS, Kalika DS, Lamonte RR, Makhija S, Polym. Prepr., 5, 267 (1995)
  31. Willson PP, Polymer, 15, 277 (1974) 
  32. Bhatt GM, Bell JP, J. Polym. Sci. B: Polym. Phys., 14, 575 (1976)
  33. Murthy NS, Bednarczyk C, Rim PB, Nelson CJ, J. Appl. Polym. Sci., 64(7), 1363 (1997) 
  34. Mascia L, Fekkai Z, Polymer, 34, 1418 (1993)