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A kinetic study of the thermal decomposition of poly(aryl‐ether‐ether‐ketone) (PEEK) in nitrogen
Author(s) -
Day M.,
Cooney J. D.,
Wiles D. M.
Publication year - 1989
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760290105
Subject(s) - peek , ether , arrhenius equation , activation energy , kinetic energy , materials science , thermal decomposition , thermodynamics , ketone , isothermal process , decomposition , aryl , pyrolysis , nitrogen , polymer chemistry , chemistry , organic chemistry , composite material , physics , polymer , alkyl , quantum mechanics
The kinetic parameters of the thermal decomposition of poly(aryl‐ether‐ether‐ketone) (PEEK) in a nitrogen atmosphere have been obtained using an isothermal weight‐loss method. Several mathematical approaches have been used to obtain the Arrhenius parameters based upon the use of different reaction models. The values obtained for the activation energy ( E = 198.4 to 219.7 kJ/mol) and preexponential factor (log A = 11.1 to 12.3 min −1 ) fall within a narrow range, irrespective of the method of calculation. Although the kinetic data most closely fits an Avrami two‐dimensional nucleating model, the data can be just as easily described by a first‐order rate law.