화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.24, No.2, 182-187, February, 2016
DOI10.1007/s13233-016-4025-5  Export Citation
Molecular consideration on the lyotropic liquid crystalline behavior of poly(2-cyano-p-phenylene terephthalamide) solutions in N-methyl-2-pyrrolidone/calcium chloride
Dae Eon Jung, Youngho Eom, Hu Young Yoon, Jaeyoung Lee1, and Byoung Chul Kim†
  • Department of Organic and Nano Engineering, Hanyang University, Seoul, 04763, Korea
  • 1Fundamental Technology R&D Group, Central Research Park, Kolon Industries, Inc., Gumi, Gyeongbuk, 39366, Korea
E-mail:
The lyotropic liquid crystalline behavior of poly(2-cyano-p-phenylene terephthalamide) (CY-PPTA) solution in the mixture of N-methyl-2-pyrrolidone and calcium chloride was investigated in terms of concentration and temperature. The intrinsic viscosity was decreased with increasing temperature, indicating the contraction of CY-PPTA chain at higher temperature. In dynamic viscosity measurement, the critical concentration (C*) where phase transition to the liquid crystalline phase takes place was decreased with increasing temperature. Above the C*, the dynamic viscosity was decreased and Bingham behavior got more noticeable with increasing concentration due to the development of the liquid crystalline structures. However, Bingham behavior was more notable at higher temperature at a given concentration. The viscosity curves showed the three distinct flow regions suggested by Asada and Onogi and negative first normal stress difference was observed in the range of intermediate shear rates.
Keywords:para-aramid;lyotropic;poly(2-cyano-p-phenylene terephthalamide);rheology
  1. Kotomin SV, J. Thermoplast. Compos. Mater., 26, 91 (2013)
  2. Naito K, J. Appl. Polym. Sci., 128(2), 1185 (2013)
  3. Yue CY, Sui GX, Looi HC, Compos. Sci. Technol., 60, 421 (2000)
  4. Bair TI, Morgan PW, Killian FL, Macromolecules, 10, 1396 (1977)
  5. Burch RR, Sweeny W, Schmidt HW, Kim YH, Macromolecules, 23, 1065 (1990)
  6. Chu EY, Xu ZS, Lee CJ, Sek CK, Okamoto Y, Pearce EM, Kwei TK, J. Polym. Sci. B: Polym. Phys., 33(1), 71 (1995)
  7. de Ruijter C, Mendes E, Boerstoel H, Picken SJ, Polymer, 47(26), 8517 (2006)
  8. Frosini V, Levita G, Butta E, Polym. Eng. Sci., 19, 56 (1979)
  9. Ghaemy M, Masoumi A, Nasab SMA, Hassanzadeh M, J. Appl. Polym. Sci., 127(4), 3169 (2013)
  10. Guan Y, Zheng YJ, Cui JX, Wan XH, Chin. J. Polym. Sci., 28, 257 (2010)
  11. Hsiao SH, Chen CW, Liou GS, J. Polym. Sci. A: Polym. Chem., 42(13), 3302 (2004)
  12. Vandenberg EJ, Diveley WR, Filar LJ, Patel SR, Barth HG, J. Polym. Sci. A: Polym. Chem., 27, 3745 (1989)
  13. Viale S, Best AS, Mendes E, Jager WF, Picken SJ, Chem. Commun., 1596 (2004)
  14. Viale S, Li N, Schotman AHM, Best AS, Picken SJ, Macromolecules, 38(9), 3647 (2005)
  15. Zulfiqar S, Lieberwirth I, Ahmad Z, Sarwar MI, Polym. Eng. Sci., 48(8), 1624 (2008)
  16. Zulfiqar S, Rafique M, Shaukat MS, Ishaq M, Sarwar MI, Colloid Polym. Sci., 287, 715 (2009)
  17. Kwolek SL, Morgan PW, Schaefgen JR, Gulrich LW, Macromolecules, 10, 1390 (1977)
  18. Morgan PW, Macromolecules, 10, 1381 (1977)
  19. Park SY, Lee SW, Oh TJ, J. Appl. Polym. Sci., 102(1), 640 (2006)
  20. Flory PJ, Proc. R. Soc. Lond. Ser. A, 234, 73 (1956)
  21. Maier W, Saupe A, Z. Naturforsch., 15a, 287 (1960)
  22. Eom Y, Kim BC, Polymer, 55(10), 2570 (2014)
  23. Al-Itry R, Lamnawar K, Maazouz A, Polym. Degrad. Stabil., 97, 1898 (2012)
  24. Brunchi CE, Morariu S, Bercea M, Colloids Surf. B: Biointerfaces, 122, 512 (2014)
  25. Cho YH, Dan KS, Kim BC, Korea-Aust. Rheol. J., 20(2), 73 (2008)
  26. Lyoo WS, Kim BC, Ha WS, Polym. Eng. Sci., 37(7), 1259 (1997)
  27. Digianantonio KM, Glover SA, Johns JP, Rosser AA, Org. Biomol. Chem., 9, 4116 (2011)
  28. Tsvetkov VN, Shtennikova IN, Macromolecules, 11, 306 (1978)
  29. Bercea M, Morariu S, Rusu D, Soft Matter, 9, 1244 (2013)
  30. Chamberlain EK, Rao MA, Food Hydrocolloids, 14, 163 (2000)
  31. Richardson PH, Willmer J, Foster TJ, Food Hydrocolloids, 12, 339 (1998)
  32. Xu XJ, Liu W, Zhang LN, Food Hydrocolloids, 20, 723 (2006)
  33. Chae DW, Kim BC, Compos. Sci. Technol., 67, 1348 (2007)
  34. Asada T, Onogi S, Yanase H, Polym. Eng. Sci., 24, 355 (1984)
  35. Baek SG, Magda JJ, Cementwala S, J. Rheol., 37, 935 (1993)
  36. Burghardt WR, Macromol. Chem. Phys., 199, 471 (1998)
  37. Burghardt WR, Fuller GG, Macromolecules, 24, 2546 (1991)
  38. Huang CM, Magda JJ, Larson RG, J. Rheol., 43(1), 31 (1999)
  39. Kiss G, Porter RS, J. Polym. Sci. Polym. Symp., 65, 193 (1978)
  40. Magda JJ, Baek SG, Devries KL, Larson RG, Macromolecules, 24, 4460 (1991)
  41. Marrucci G, Macromolecules, 24, 4176 (1991)
  42. Mewis J, Moldenaers P, Curr. Opin. Colloid Interface Sci., 1, 466 (1996)
  43. Zhou M, Frydman V, Frydman L, J. Phys. Chem., 100(50), 19280 (1996)