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Abstract
Thermal decomposition kinetics of low- and high-density polyethylene (LDPE, HDPE) were investigated. Thermal degradation of raw and waste LDPE and HDPE was performed using a thermogravimetric analyzer (TGA) in nitrogen atmosphere under non-isothermal conditions. Heating rates between 5 and 50 K/min were employed in TGA experiments. First-order decomposition reaction was assumed, and for the kinetic analysis an integral method was used. The apparent activation energy (Ea) and the pre-exponential factor (ko) were evaluated. It was found that value of the kinetic parameters and apparent activation energy of HDPE were larger than the LDPE.
Acknowledgment
The authors are grateful to The Scientific and Technical Research Council of Turkey (TÜBİTAK—Project No: MISAG-243) and to State Planning Organization (DPT—Project No: 2003K120470-33) for funding the work described in this article.