Abstract
Thermal degradation of high-molecular-weight polyethylene is considered from the standpoint of the random break theory. The quantitative estimations made indicate that the vaporization conditions realized in the experiment exert a decisive effect on the total conversion rate. The heat of vaporization of macromolecular fragments formed by cleavage of C-C bonds amounts to approximately a half of the total thermal effect recorded by thermal analysis. The results obtained make it possible to rationalize some phenomena that were observed experimentally but have not been satisfactorily interpreted previously, and also to predict the influence of experimental conditions on the course of thermal degradation of polymers.
Similar content being viewed by others
References
Wendlandt, W.W., Thermal Methods of Analysis, New York: Interscience, 1964.
Shlenskii, O.F., Afanas’ev, N.V., and Shashkov, A.G., Termorazrushenie materialov (Thermal Degradation of Materials), Moscow: Energoatomizdat, 1996.
Polezhaev, Yu.V. and Yurevich, F.B., Teplovaya zashchita (Thermal Protection), Moscow: Energiya, 1976.
Shteinberg, A.S., Bystrye reaktsii v energoemkikh sistemakh (Fast Reactions in High-Energy-Content Systems), Moscow: Fizmatgiz, 2006.
Barzykin, V.V., Fiz. Goren. Vzryva, 1973, vol. 9, no. 1, pp. 37–54.
Koptelov, A.A., Milekhin, Yu.M., and Gusev, S.A., Dokl. Ross. Akad. Nauk, 2007, vol. 416, no. 4, pp. 496–501.
Arnold, M., Veress, G.E., Paulik, J., and Paulik, F., Anal. Chim. Acta, 1981, vol. 124, no. 2, pp. 341–350.
Madorsky, S.L., Thermal Degradation of Organic Polymers, New York: Interscience, 1964.
Frederick, W.J. and Mentzer, C.C., J. Appl. Polym. Sci., 1975, vol. 19, no. 7, pp. 1799–1804.
Koptelov, I.A. and Karyazov, S.V., Plast. Massy, 2008, no. 7, pp. 24–28.
Koptelov, A.A., Milekhin, Yu.M., and Shlenskii, O.F., Vysokomol. Soedin., Ser. A, 2005, vol. 47, no. 9, pp. 1628–1634.
Papkov, V.S. and Slonimskii, G.L., Vysokomol. Soedin., 1966, vol. 8, no. 1, pp. 80–87.
Saito, O., The Radiation Chemistry of Macromolecules, Dole, M., Ed., New York: Academic, 1972–1973. Translated under the title Radiatsionnaya khimiya makromolekul, Moscow: Atomizdat, 1978, pp. 205–238.
Sawada, H., Thermodynamics of Polymerization, New York: Dekker, 1976.
Kireev, V.A.,. Metody prakticheskikh raschetov v termodinamike khimisheskikh reaktsii (Methods of Practical Calculations in Thermodynamics of Chemical Reactions), Moscow: Khimiya, 1975.
Pavlov, B.A. and Terent’ev, A.P., Kurs organicheskoi khimii (Course of Organic Chemistry), Moscow: Khimiya, 1965.
McCombie, C.W., Problems in Thermodynamics and Statistical Physics, Landsberg, P.T., Ed., London: Pion, 1971. Translated under the title Zadachi po termodinamike i statisticheskoi fi zike, Moscow: Mir, 1974, pp. 505–516.
Dudley, M.A., Smith, D.A., and Youren, J.W., in Thermal Analysis, New York: Academic, 1979, vol. 1, pp. 643–650.
Zelenev, Yu.V., Koptelov, A.A., and Shlenskii, O.F., Plast. Massy, 2000, no. 10, pp. 24–27.
Koptelov, A.A. and Karyazov, S.V., Dokl. Ross. Akad. Nauk, 2003, vol. 389, no. 5, pp. 643–647.
Fizicheskie velichiny: Spravochnik (Physical Quantities: Handbook), Grigor’ev, I.S. and Melikhov, E.Z., Eds., Moscow: Energoatomizdat, 1991.
Author information
Authors and Affiliations
Additional information
Original Russian Text © A.A. Koptelov, Yu.M. Milekhin, Yu.N. Baranets, 2009, published in Zhurnal Prikladnoi Khimii, 2009, Vol. 82, No. 11, pp. 1899–1906.
Rights and permissions
About this article
Cite this article
Koptelov, A.A., Milekhin, Y.M. & Baranets, Y.N. Application of the random break theory to thermal degradation of polymers. Russ J Appl Chem 82, 2047–2054 (2009). https://doi.org/10.1134/S1070427209110263
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1070427209110263