Crystallization Behavior and Mechanical Properties of Carbon Nanotube Reinforced Poly(ethylene terephthalate)

탄소나노튜브 충진 폴리에틸렌테레프탈레이트의 결정화거동 및 기계적 물성

  • Park, Hawe-Soo (Department of Fiber and Polymer Engineering, Hanyang University) ;
  • Kim, Jun-Young (Department of Fiber and Polymer Engineering, Hanyang University) ;
  • Kim, Seong-Hun (Department of Fiber and Polymer Engineering, Hanyang University)
  • 박회수 (한양대학교 섬유고분자공학과) ;
  • 김준영 (한양대학교 섬유고분자공학과) ;
  • 김성훈 (한양대학교 섬유고분자공학과)
  • Published : 2007.02.28

Abstract

Polymer nanocomposites based on multiwall carbon nanotube (MWCNT) and poly(ethylene terephthalate) (PET) were prepared by a melt blending process in a twin-screw extruder. The non-isothermal crystallization behavior of the PET/MWCNT nanocomposites was investigated by employing the Ozawa, the Avrami, and the combined method. The non-iso-thermal crystallization behavior of the PET/MWCNT nanocomposites significantly depends on cooling rate and MWCNT content. The incorporation of MWCNT accelerates the nucleation and crystal growth mechanisms of PET, and this effect being more appreciable at lower MWCNT content. The combined Avrami and Ozawa method was found to be more effective in describing the non-isothermal crystallization process of PET/MWCNT nanocomposites. The nucleation activity of PET/MWCNT nanocomposites was increased with the incorporation of MWCNT. The activation energy for crystallization of PET/MWCNT nanocomposites was higher than that of PET. The incorporation of MWCNT improved the thermal stability and mechanical properties of PET/MWCNT nanocomposites.

Keywords

References

  1. S. Iijima, 'Helical Microtubules of Graphitic Carbon', Nature, 1991, 354, 56-58 https://doi.org/10.1038/354056a0
  2. A. G. Rinzler, J. H. Hafner, P. Nikolaev, L. Lou, S. G. Kim, D. Toman, P. Nordlander, D. T. Colbert, and R. E. Smalley, 'Unraveling Nanotubes: Field Emission from an Atomic Wire', Science, 1995, 269, 1550-1553 https://doi.org/10.1126/science.269.5230.1550
  3. S. Iijima and T. Ichihashi, 'Single-shell Carbon Nanotubes of l-nm Diameter', Nature, 1993,363, 603-605 https://doi.org/10.1038/363603a0
  4. N. S. Dresselhaus, G. Dresselhaus, and P. H. Avouris, 'Carbon Nanotubes: Synthesis, Structure Properties, and Applications', Springer, Berlin, 2001, p.80
  5. W. A. Deheer, A. Chatelain, and D. Ugarte, 'A Carbon Nanotube Field-emission Electron Source', Science, 1995, 270, 1179-1180 https://doi.org/10.1126/science.270.5239.1179
  6. P. G. Collins, A. Zettle, H. Bando, A. Thess, and R. E. Smalley, 'Nanotube Nanodevice', Science, 1997, 278, 100-103 https://doi.org/10.1126/science.278.5335.100
  7. J. W. Cho and D. R. Paul, 'Nylon 6 Nanocomposites by Melt Compounding', Polymer, 2001, 42, 1083-1094 https://doi.org/10.1016/S0032-3861(00)00380-3
  8. Y. Ke, C. Long, and Z. Qi, 'Crystallization, Properties, and Crystal and Nanoscale Morphology of PET-Clay Nanocomposites', J Appl Polym Sci, 1999,71,1339-1146
  9. L. Valentini, J. Biagiotti, M. A. Lopez-Manchado, S. Santucci, and J. M. Kenny, 'Effects of Carbon Nanotubes on the Crystallization Behavior of Polypropylene', Polym Eng Sci, 2004, 44, 303-311 https://doi.org/10.1002/pen.20028
  10. J. Y. Kim, H. S. Park, and S. H. Kim, 'Unique Nucleation of Multi-walled Carbon Nanotube and Poly(ethylene 2,6naphthalate) Nanocomposites during Non-isothermal Crystallization', Polymer, 2006, 47, 1379-1389 https://doi.org/10.1016/j.polymer.2005.12.042
  11. J. Y. Kim and S. H. Kim, 'Influence of Multiwall Carbon Nanotube on Physical Properties of Poly(ethylene 2,6naphthalate) Nanocornposites', J Polym Sci: Part B, 2006, 44, 1062-1071 https://doi.org/10.1002/polb.20728
  12. S. H. Ahn, S. H. Kim, and S. G. Lee, 'Surface-modified Silica Nanoparticle-reinforced Poly(ethylene 2,6naphthalate)', J Appl Polym Sci, 2004, 94, 812-818 https://doi.org/10.1002/app.21007
  13. S. H. Ahn, S. H. Kim, B. C. Kim, K. B. Shim, and B. G. Cho, 'Mechanical Properties of Silica Nanoparticle Reinforced Poly(ethylene 2, 6-naphthalate)', Macromol Res, 2004, 12, 293-302 https://doi.org/10.1007/BF03218403
  14. A. R. Bhattacharyra, T. V. Sreekumar, L. Tao, S. Kumar, L. M. Ericson, R. H. Hauge, and R. E. Smalley, 'Crystallization and Orientation Studies in Polypropylene/ Single Wall Carbon Nanotube Composite', Polymer, 2003, 44, 2373-2377 https://doi.org/10.1016/S0032-3861(03)00073-9
  15. J. Sandler, G. Broza, M. Nolta, K. Schulte, Y. M. Lam, and M. S. P. Shaffer, 'Crystallization of Carbon Nanotube and Nanofiber Polypropylene Composites', J Macromol Sci: Phys B, 2003, 42, 479-488 https://doi.org/10.1081/MB-120021576
  16. E. Assouline, A. Lustiger, A. H. Barber, C. A. Cooper, E. Klein, E. Wachtel, and H. D. Wagner, 'Nucleation Ability of Multiwall Carbon Nanotubes in Polypropylene Composites', J Polym Sci: Part B, 2003,41,520-527 https://doi.org/10.1002/polb.10394
  17. T. Ozawa, 'Kinetics of Non-isothermal Crystallization', Polymer, 1971, 12, 150-158 https://doi.org/10.1016/0032-3861(71)90041-3
  18. M. L. Di Lorenzo and C. Silvestre, 'Non-isothermal Crystallization of Polymers', Prog Polym Sci, 1999, 24, 917-950 https://doi.org/10.1016/S0079-6700(99)00019-2
  19. M. Avrarni, 'Kinetics of Phase Change. J. General Theory', J Chem Phys, 1939,7, 1103-1112 https://doi.org/10.1063/1.1750380
  20. M. A vrarni, 'Kinetics of Phase Change. II. TransformationTime Relations for Random Distribution of Nuclei', J Chem Phys, 1940, 8, 212-224 https://doi.org/10.1063/1.1750631
  21. A. Ziabicki, 'Theoretical Analysis of Oriented and Non- isothermal Crystallization. II. Extension of the KohnogoroffAverami-Evans Theory onto Processes with Variable Rates and Mechanisms', Colloid Polym Sci, 1974, 252, 433-447 https://doi.org/10.1007/BF01554749
  22. T. Liu, Z. Mo, S. Wang, and H. Zhang, 'Nonisothermal Melt and Cold Crystallization Kinetics of Poly(Aryl Ether Ether Ketone Ketone)', Polym Eng Sci, 1997, 37, 568-575 https://doi.org/10.1002/pen.11700
  23. M. Alonso, J. I. Velasco, and J. A. Saja, 'Constrained Crystallization and Activity of Filler in Surface Modified Talc Polypropylene Composites', Eur Polym J, 1997, 33, 255-262 https://doi.org/10.1016/S0014-3057(96)00159-0
  24. A. Dobreva and I. Gutzow, 'Activity of Substrates in the Catalyzed Nucleation of Glass-forming Melts. I. Theory', J Non-Cryst Solids, 1993, 162, 1-2 https://doi.org/10.1016/0022-3093(93)90736-H
  25. A. Dobreva and I. Gutzow, 'Activity of Substrates in the Catalyzed Nucleation of Glass-forming Melts. II. Experimental Evidence', J Non-Cryst Solids, 1993, 162, 13-25 https://doi.org/10.1016/0022-3093(93)90737-I
  26. J. Y. Kim, S. W. Kang, S. H. Kim, B. S. Kim, K. B. Shim, and J. G. Lee, 'Deformation Behavior and Nucleation Activity of a Thermotropic Liquid-Crystalline Polymer in Poly(butylene terephthalate)-Based Composites', Macromol Res, 2005, 13, 19-29 https://doi.org/10.1007/BF03219011
  27. S. H. Kim, S. H. Ahn, and T. Hirai, 'Crystallization Kinetics and Nucleation Activity of Silica Nanoparticlefilled Poly(ethylene 2,6-naphthalate)', Polymer, 2003, 44, 5625-5634 https://doi.org/10.1016/S0032-3861(03)00623-2
  28. M. Joshi and B. S. Butola, 'Studies on Nonisothermal Crystallization of HDPE/POSS Nanocomposites', Polymer, 2004, 45, 4953-4968 https://doi.org/10.1016/j.polymer.2004.04.057
  29. X. Hu and A. Lesser, 'Non-isothermal Crystallization of Poly(trimethylene terephthalate) (PTT)/clay Nanocomposites', Macromol Chern Phys, 2004, 205, 574-580 https://doi.org/10.1002/macp.200300119
  30. H. E. Kissingeer, 'Reaction Kinetics in Differential Thermal Analysis', Anal Chem, 1957,21, 1702-1706
  31. S. N. Li, Z. M. Li, M. B. Yang, Z. Q. Hu, X. B. Xu, and R. Huang, 'Carbon Nanotubes Induced Non-isothermal Crystallization of Ethylene-vinyl Acetate Copolymer', Mater Lett, 2004, 58, 3967-3970 https://doi.org/10.1016/j.matlet.2004.09.005
  32. W. Leelapompisit, M. T. Ton-That, F. P. Sarazin, K. C. Cole, J. Denault, and B. Simard, 'Effect of Carbon Nanotubes on the Crystallization and Properties of Polypropylene', J Polym Sci: Part B, 2005, 43, 2445-2453 https://doi.org/10.1002/polb.20527
  33. K. Takashi, H. Jenny, H. Richard, A. Walid, and D. Jack, 'Thermal Degradation and Flammability Properties of Poly(propylene)/Carbon Nanotube Composites', Macromol Rapid Commun, 2002, 23, 761-765 https://doi.org/10.1002/1521-3927(20020901)23:13<761::AID-MARC761>3.0.CO;2-K