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Studies on thermal degradation of synthetic polymers. XV. Estimation of the product yield on the basis of intensity function for thermal gasification of isotactic and atactic polypropylenes
Author(s) -
Sawaguchi Takashi,
Suzuki Kazumasa,
Kuroki Takeshi,
Ikemura Takashi
Publication year - 1981
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1981.070260418
Subject(s) - tacticity , arrhenius equation , materials science , yield (engineering) , thermodynamics , polymer , thermal decomposition , polymer chemistry , chemistry , polymerization , activation energy , composite material , organic chemistry , physics
Abstract The kinetic equation for the pyrolysis gasification reaction of isotactic and atactic polypropylenes has been established. The difference in tacticity of the samples does not much affect the kinetic parameters. The exponent a of the intensity function I F = T δ a (K·sec a ), concerning the severity of decomposition conditions, has been approximated as 0.039 (isotactic) and 0.040 (atactic), respectively from the kinetic parameters in this experiment. The calculated values of the product yield from Arrhenius equations, k = 2.0 × 10 10 exp(−40.9 × 10 3 / RI F ) (isotactic) and k = 1.2 × 10 10 exp(–41.4 × 10 3 / RI F ) (atactic), for the I F standard agree with the experimental values.