Environmental Engineering Research

Korean Society of Environmental Engineers (대한환경공학회)
권호 표지
DOI QR코드

DOI QR Code

COMBUSTION KINETICS OF POLYETHYLENE TEREPHTHALATE

  • Oh, Sea-Cheon (Department of Environmental Engineering, Kongju National University) ;
  • Lee, Dong-Gyu (Department of Chemical Engineering, Hanyang University) ;
  • Kwak, Hyun (Department of Chemical Engineering, Hanyang University) ;
  • Bae, Seong-Youl (Department of Chemical Engineering, Hanyang University)
  • Published : 2006.10.21
Download PDF
⟨ Previous Next ⟩

Abstract

The combustion kinetics of poly(ethylene terephthalate) (PET) was studied by the dynamic model which accounts for the thermal decomposition of polymer at any time. The kinetic analysis was performed by a conventional nonisothermal thermogravimetric (TG) technique at several heating rates between 10 and 40 K/min in air atmosphere. The thermal decomposition of PET in air atmosphere was found to be a complex process composed of at least two stages for which kinetic values can be calculated. The combustion kinetic analysis of PET gave apparent activation energy for the first stage of $257.3{\sim}269.9\;kJ/mol$, with a value of $140.5{\sim}213.8\;kJ/mol$ for the second stage. To verify the effectiveness of the kinetic analysis method used in this work, the kinetic analysis results were compared with those of various analytical methods. The kinetic parameters were also compared with values of the pyrolysis of PET in nitrogen atmosphere.

Keywords

References

  1. Cho, W.-S., Roh, S.-D., Kim, S.-W., Jang, W.-H. and Shon, S.-S., 'The Process Modeling and Simulations for the Fault Diagnosis of Rotary Kiln Incineration Process,' J. Ind. Eng. Chem., 4, 99-104 (1998)
  2. Wu, Y.-P. and Won, Y.-S., 'Reaction Kinetics Modeling of Combustion or Pyrolysis on Chlorinated Hydrocarbons,' J. Ind. Eng. Chem., 9, 775-786 (2003)
  3. Nam, J.-D. and Seferis, J. C., 'Generalized Composite Degradation Kinetics for Polymeric Systems Under Isothermal and Nonisothermal Conditions,' J. Polym. Sci., Polym. Phys. 30, 455-463 (1992) https://doi.org/10.1002/polb.1992.090300505
  4. Chen, K. S. and Ye, R. Z., 'Kinetics of Thermal Decomposition of Stylene-Butadien Rubber at Low Heating Rates in Nitrogen and Oxygen,' Combustion and Flames, 108, 408-418 (1997) https://doi.org/10.1016/S0010-2180(96)00142-3
  5. Miura, K. and Maki, T., 'Simplified Method to Estimate f(E) in Distributed Activation Energy Model for Analyzing Coal Pyrolysis Reaction,' J. Chem. Eng. Japan, 31, 228-235 (1998) https://doi.org/10.1252/jcej.31.228
  6. Jun, H. C., Lee, H. P., Yi, S.-C., Yoo, K. O. and Oh, S. C., 'A Kinetic Analysis of the Thermal-Oxidative Decomposition of Polypropylene,' J. Fire Sciences, 18, 245-263 (2000) https://doi.org/10.1177/073490410001800401
  7. Jimenez, A., Berenguer, V., Lopez, J. and Sanchez, A., 'Thermal Degradation Study of Poly(vinyl Chloride) : Kinetic Analysis of Thermogravimetric Data,' J. Appl. Polym. Sci., 50, 1565-1573 (1993) https://doi.org/10.1002/app.1993.070500910
  8. Salin, J. M. and Seferis, J. C., 'Kinetic Analysis of High-Resolution TGA Variable Heating Rate Data,' J. Appl. Polym. Sci., 47, 847-856 (1993) https://doi.org/10.1002/app.1993.070470512
  9. Denq, B.-L., Chiu, W.-Y. and Lin, K.-F.; 'Kinetic Model of Thermal Degradation of Polymers for Nonisothermal Process,' J. Appl. Polym. Sci., 66, 1855-1868 (1997) https://doi.org/10.1002/(SICI)1097-4628(19971205)66:10<1855::AID-APP3>3.0.CO;2-M
  10. Albano, C and de Freitas, E., 'Thermogravimetric Evaluation of the Kinetics of Decomposition of Polyolefin Blends,' Polym. Degrad. Stab., 61, 289-295 (1998) https://doi.org/10.1016/S0141-3910(97)00211-5
  11. Oh, S. C., Lee, H. P., Yi, S.-C. and Yoo, K. O., 'The Nonisothermal Decomposition Kinetics of Poly(vinyl Chloride),' J. Fire Sciences, 18, 245-263 (1999)
  12. Park, J. W., Oh, S. C., Lee, H. P., Kim, H. T. and Yoo, K. O., 'A Kinetic Analysis of Thermal Degradation of Polymers Using a Dynamic Model,' Polym. Degrad. Stab., 67, 535-540 (2000) https://doi.org/10.1016/S0141-3910(99)00155-X
  13. Oh, S. C., Jun, H. C. and Kim, H. T., 'Thermogravimetric Evaluation for Pyrolysis Kinetics of Styrene - Butadiene Rubber,' J. Chem. Eng. Japan, 36, 1016-1022 (2003) https://doi.org/10.1252/jcej.36.1016
  14. Turn, S. R., An Introduction to Combustion: Concepts and Applications, McGraw-Hill, New York, p.127 (1994)
  15. Coat, A. W. and Redfern, J. P., 'Kinetic Parameters from Thermogravimetric Data,' Nature, 201, 68-69 (1964) https://doi.org/10.1038/201068a0
  16. Friedman, H. L., 'Kinetics of Thermal Degradation of Char-Forming Plastics from Thermogravimetry. Application to a Phenolic Plastics,' J. Polym. Sci., C6, 183-195 (1964)
  17. Flynn, J. H. and Wall, L. A., 'General Treatment of the Thermogravimetry of Polymers,' J. Research of National Bureau of Standards-A. Physics and Chemistry, 70A, 487-490 (1966) https://doi.org/10.6028/jres.070A.043
  18. Conney, J. D., Day, M. and Wiles, D. M., 'Thermal Degradation of Poly(ethylene Terephthalate): A Kinetic Analysis of Thermogravimetric Data,' J. Appl. Polym. Sci., 28, 2887-2902 (1983) https://doi.org/10.1002/app.1983.070280918

Cited by

  1. Ferulic Acid as Building Block for the Lipase-Catalyzed Synthesis of Biobased Aromatic Polyesters vol.13, pp.21, 2021, https://doi.org/10.3390/polym13213693
  2. Pyrolysis and combustion of community masks: Thermogravimetric analyses, characterizations, gaseous emissions, and kinetic modeling vol.306, pp.None, 2006, https://doi.org/10.1016/j.fuel.2021.121644