Journal
ENERGY CONVERSION AND MANAGEMENT
Volume 51, Issue 7, Pages 1363-1369Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2009.12.017
Keywords
HDPE; LDPE; PP; Thermal analysis; Isoconversional methods; Master-plot method
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Study of the decomposition kinetics is an important tool for the development of polymer recycling in industrial scale. In this work, the activation energy and the reaction model of the pyrolysis of high density polyethylene (HDPE), low density polyethylene (LDPE) and polypropylene (PP) have been estimated from non-isothermal kinetic results. Firstly, the activation energy values obtained by Friedman, Kissinger-Akahira-Sunose and Flynn-Wall-Ozawa isoconversional methods, are 238-247 kJ/mol for HDPE, 215-221 kJ/mol for LDPE and 179-188 kJ/mol for PP. Secondly, the appropriate conversion model of the process was determined by Coats-Redfern and Criado methods. The pyrolysis reaction models of HDPE and LOPE are accounted for by Contracting Sphere model, whereas that of PP by Contracting Cylinder model. (C) 2009 Elsevier Ltd. All rights reserved.
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