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Journal of Fire Sciences
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A Kinetic Analysis of the Thermal-Oxidative Decomposition of Polypropylene

Hyun Chul Jun

Department of Chemical Engineering Hanyang University 17 Haengdang-dong, Sungdong-gu Seoul, 133-791, Korea

Hae Pyeong Lee

Department of Chemical Engineering Hanyang University 17 Haengdang-dong, Sungdong-gu Seoul, 133-791, Korea

Sung-Chul Yi

Department of Chemical Engineering Hanyang University 17 Haengdang-dong, Sungdong-gu Seoul, 133-791, Korea

Kyong Ok Yoo

Department of Chemical Engineering Hanyang University 17 Haengdang-dong, Sungdong-gu Seoul, 133-791, Korea

Sea Cheon Oh

Department of Environmental Engineering Cheonan National Technical College 275, Budae-dong, Cheonan Chungnam, 330-240, Korea

The kinetics of the thermal-oxidative decomposition of poly propylene (PP) was studied by a conventional thermogravimetric technique in pure nitrogen and various concentrations of oxygen ranging from 5-21%. The kinetic model that accounts for the effects of oxygen concentration was proposed to describe the thermal decomposition of PP. The thermogravimetric analysis curve and its derivative have been analyzed using the differential and integral methods with modification of the Friedman and Coats-Redfern methods. The activation energy, the pre-exponential factor, and the reaction order for unreacted material and oxygen concentration have been determined. When oxy gen was present, the activation energy was reduced significantly.

Key Words: kinetic analysis • thermal decomposition • polypropylene

Journal of Fire Sciences, Vol. 18, No. 4, 245-264 (2000)
DOI: 10.1177/073490410001800401
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