화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.10, No.3, 484-491, May, 2004
Export Citation
Peak Separation Method for Estimating Apparent Kinetic Parameters of Dehydrochlorination Reactions of PVC: Independent Reactions
Seungdo Kim†, In-Hee Hwang1, and Yeong-Kwang Kim2
  • Department of Envrionmental System Engineerig, Hallym University, Kangwon 200-702, Korea
  • 1Department of Envrionmental Engineering, Konkuk University, Seoul 130-743, Korea
  • 2Department of Envrionmetal Engineering, Kangwon National University, Kangwon 200-701, Korea
E-mail:
This research was designed to develop a separation method for partially overlapped peaks on derivative thermogravimetry (DTG) curves and to apply this technique to estimate the dehydrochlorination kinetics of PVC (Polyvinyl Chloride). It was assumed that two peaks might be responsible for the independent dehydrochlorination reactions of two PVC compounds. Dehydrochlorination kinetics of PVC were investigated using a thermogravimetric analysis (TGA) system at heating rates of 0.75, 1, and 1.25 K/min under a nitrogen atmosphere. A key hypothesis for applying the separation method was that, under dynamic operations, there would be a unique temperature region in which each compound would decompose uniquely. Firstly, the apparent kinetic parameters and initial mass of the thermally-more-stable PVC compound were estimated from the partial DTG curve in the range where only this compound might decompose. Then, the dehydrochlorination kinetics of the thermally-less-stable PVC compound were elucidated by analyzing its TGA curve that was derived by subtracting the TGA curve of the more-stable PVC compound from the original curve. It is essential to separate the overlapped peaks on the DTG curves to accurately interpret the kinetics of the independent reactions. This separation technique can be applied to analyze the kinetic parameters of two independent reactions provided that there are unique temperature regions in which each compound decomposes solely.
Keywords:PVC;pyrolysis;separation method;dehydrochlorination kinetics;independent reaction
  1. Jimnez A, Lpez J, Vilaplana J, Dussel HJ, J. Anal. Appl. Pyrolysis, 40-41, 201 (1997)
  2. Marcilla A, Beltrn M, Polym. Degrad. Stabil., 60, 1 (1998)
  3. Blazs M, Jakab E, J. Anal. Appl. Pyrolysis, 49, 125 (1999)
  4. Kim S, Waste Manage., 21, 609 (2001)
  5. Abbs KB, Srvik EM, J. Appl. Polym. Sci., 17, 3567 (1973)
  6. Chang EP, Salovey R, J. Polym. Sci. A: Polym. Chem., 12, 2927 (1974)
  7. Basan S, Gven O, Thermochim. Acta, 106, 169 (1986)
  8. McNeill Ic, Memetea L, Cole WJ, Polym. Degrad. Stabil., 49, 181 (1995)
  9. Sakata Y, Uddin MA, Koizumi K, Murata K, Polym. Degrad. Stabil., 53, 111 (1996)
  10. Miranda R, Pakdel H, Roy C, Darmstadt H, Vasile C, Polym. Degrad. Stabil., 66, 107 (1999)
  11. Wu CH, Chang CY, Hor JL, Shih SM, Chen LW, Chang FW, Can. J. Chem. Eng., 72(4), 644 (1994)
  12. Wu CH, Chang CY, Hor JL, Chem. Eng. J., 55, 87 (1994)
  13. Murayama N, Amagi Y, J. Polym. Sci. C: Polym. Lett., 4, 115 (1966)
  14. Crawley S, McNeill IC, J. Polym. Sci. A: Polym. Chem., 16, 2593 (1978)
  15. Miranda R, Yang J, Roy C, Vasile C, Polym. Degrad. Stabil., 64, 127 (1999)
  16. Agrawal RK, Thermochim. Acta, 203, 93 (1992)
  17. Srum L, Grnli MG, Hustad JE, Fuel, 80, 1217 (2001)
  18. Yang J, Miranda R, Roy C, Polym. Degrad. Stabil., 73, 455 (2001)