Kinetics of thermal pyrolysis of high-density polyethylene

Abstract EN

Thermal pyrolysis kinetics of virgin high-density polyethylene (HDPE) was investigated.

Thermal pyrolysis of HDPE was performed using a thermogravimetric analyzer in nitrogen atmosphere under non-isothermal conditions at different heating rates 4, 7, 10 °C / min.

First-order decomposition reaction was assumed, and for the kinetic analysis Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO) and Coats and Redfern (CR) method were used.

The obtained values of average activation energy by the KAS and FWO methods were equal to137.43 and 141.52 kJ / mol respectively, these values were considered in good agreement, where the average activation energy value obtained by CR equation methods was slightly different which equal to 153.16 kJ / mol.