Kinetics of the Nonisothermal Degradation of Styrene-Butadiene Rubber

Sea Cheon Oh, Hae Pyeong Lee, Sung Yi, Kyong Ok Yoo

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The kinetics of the thermal degradation of styrene-butadiene rubber (SBR) have been studied using a conventional nonisothermal thermogravimetric technique at several heating rates ranging from 10°C/min to 50°C/min. The dynamic thermogravimetric analysis curve and its derivative have been analyzed using a variety of analytical methods reported in the literature to obtain the kinetic parameters such as activation energies, reaction orders, and pre-exponential factors. When Freeman-Carroll's method is used, apparent activation energy ranging from 105.2-258.3 kJ/mol at various heating rates is given whereas the Flynn-Wall method gave values ranging from 220.9-344.3 kJ/mol. Friedman and Ozawa methods gave apparent activation energy between 55.0-237.0 kJ/mol and 75.3-305.1 kJ/mol upon fractional weight loss, respectively.

Original languageEnglish
Pages (from-to)362-377
Number of pages16
JournalJournal of Fire Sciences
Issue number5
StatePublished - 1999 Sep 1


  • Styrene-butadiene rubber
  • Thermal degradation kinetic
  • Thermogravimetric technique

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