Preparation of PET Nanocomposites: Dispersion of Nanoparticles and Thermal Properties

  • Her, Ki-Young (Hybrid materials research center. Korea Institute of Science & Technology) ;
  • Kim, Dae-Heum (Department of Chemical Engineering, Kwangwoon University) ;
  • Lim, Soon-Ho (Hybrid materials research center. Korea Institute of Science & Technology)
  • Published : 2008.10.01

Abstract

The development of polymer/inorganic nanocomposites has attracted a great deal of interest due to the improved hybrid properties derived from the two different components. Various nanoscale fillers have been used to enhance polymer mechanical and thermal properties, such as toughness, stiffness, and heat resistance. The effects of the filler on the final properties of the nanocomposites are highly dependent on the filler shape, particle size, aggregate size, surface characteristics, polymer/inorganic interactions, and degree of dispersion. In this paper, we describe the influence of different $CaCO_3$ dispersion methods on the thermal properties of polyethylene terephthalate (PET)/$CaCO_3$ composites: i.e., the adsorption of $CaCO_3$ on the modified PET surface, and the hydrophobic modification of the hydrophilic $CaCO_3$ surface. We prepared PET/$CaCO_3$ nanocomposites using a twin-screw extruder, and investigated their thermal properties and morphology.

References

  1. Chu, W. S., Jeong, S. Y., Pandey, J. K., Ahn, S. H., Lee, J. H. and Chi, S. C., 'Fabrication of composite drug delivery system using nano composite deposition system and in vivo characterization,' International Journal of Precision Engineering and Manufacturing, Vol. 9, No. 2, pp. 81-83, 2008
  2. Kang, H. J., Ahn, S. H., Lee, J. S. and Lee, J. H., 'Surface modification of aluminum by nitrogen-Ion Implantation,' International Journal of Precision Engineering and Manufacturing, Vol. 7, No. 1, pp. 57-61, 2006
  3. Chun, D. M., Kim, M. H., Lee, J. C. and Ahn, S. H., 'A Nano-particle Deposition System for Ceramic and Metal Coating at Room Temperature and Low Vacuum Conditions,' International Journal of Precision Engineering and Manufacturing, Vol. 9, No. 1, pp. 51-53, 2008
  4. Tan, P. C., Yeo, S. H. and Tan, Y. V., 'Effects of Nanopowder Additives in Micro-electrical Discharge Machining,' International Journal of Precision Engineering and Manufacturing, Vol. 9, No. 3, pp. 22-26, 2008
  5. Giannellis, E. P., 'Polymer layered silicate nanocomposites,' Adv. Mater., Vol. 8, No. 1, pp. 29-35, 1996 https://doi.org/10.1002/adma.19960080104
  6. http://nanomt.com/
  7. Wang, C. Y., Xiao, P., Zhao, Z. J., Zhao. X., Liu, Y. H. and Wang, Z. C., 'Biomimetic synthesis of hydrophobic calcium carbonate nanoparticles via a carbonation route,' Powder Technology, Vol. 170, No. 1, pp. 31-35, 2006 https://doi.org/10.1016/j.powtec.2006.08.016
  8. Sheng, Y., Zhou, B., Wang, C. Y., Zhao, X., Deng, Y. H. and Wang, Z. C., 'In situ preparation of hydrophobic $CaCO_3$ in the presence of sodium oleate,' Applied Surface Science, Vol. 253, No. 4, pp. 1983-1987, 2006 https://doi.org/10.1016/j.apsusc.2006.03.071
  9. Roux, S. and Demoustier-Chanmpangne, S., 'Surface initiated polymerization from polyethylene terephthalate,' J. of Polymer Sci (Part A) Polymer Chem., Vol. 41, Issue 9, pp. 1347-1359, 2003 https://doi.org/10.1002/pola.10686
  10. Yang, M. R., Chen, K. S., Tsai, J. C., Tseng, C. C. and Lin, S. F., 'The antibacterial activities of hydrophilic-modified nonwoven PET,' Materials Science and Engineering: C, Vol. 20, No. 1, pp. 167-173, 2002 https://doi.org/10.1016/S0928-4931(02)00028-0
  11. Li, L., Maekawa, Y., Yamaki, T. and Yoshida, M., 'Chemical Modification of a Polyethylene terephthalate Surface by the Selective Alkylation of Acid Salts,' Macromolecular Chemistry and Physics, Vol. 203, Issue 17, pp. 2470-2474, 2003 https://doi.org/10.1002/macp.200290023
  12. TA Instruments, 'Simulating DTUL (ASTM D 648) Experiments with the TMA 943 or TMA 2940,' Thermal applications note, TN14
  13. Roker, R. K., Manfred, S. and Hamann, K., 'Polymer reactions on powder surfaces,' Progr. Org. Coatings, Vol. 1, No. 1, pp. 23-44, 1972 https://doi.org/10.1016/0300-9440(72)85002-1
  14. Klupp, W. and Laible, R., 'Sedimentationseigenschaften von hochdispersem Siliciumdioxid mit kovalent gebundenem Polystyrol,' Angew. Macromol. Chem., Vol. 57, No. 1, pp. 225-232, 1977 https://doi.org/10.1002/apmc.1977.050570118
  15. Lorenzo, M. L., Errico, M. E., and Avella, M., 'Thermal and morphological characterization of polyethylene terephthalate-calcium carbonate nanocomposites,' J. Mater Sci., Vol. 37, No. 11, pp. 2351-2358, 2002 https://doi.org/10.1023/A:1015358425449