%X In this present study, the gasification kinetics of rubber seed shell, high density polyethylene, and their mixtures (20/80 and 40/60 weight ratio of HDPE/RSS) are investigated using a non-isothermal thermogravimetric analysis (TGA) system at heating rate of 10 K/min in the temperature range of 323-1173 K. The argon gas is supplied at a flowrate of 100 ml/min and the steam is generated from superheater at 383 K. The steam is injected at flowrate of 300 μL/hour into the TGA system. The Criado and Coats-Redfern methods are used to investigate the reliability of the determined value of the activation energy, EA from the experimental data of TGA. The interaction of solid-phase components based on the mentioned experimental conditions is also studied. © (2014) Trans Tech Publications, Switzerland. %K Co-gasification; Coats-Redfern method; Comparison study; Criado method; Experimental conditions; Gasification kinetics; Rubber seed shell; Temperature range, Activation energy; Argon; High density polyethylenes; Mixtures; Rubber, Gasification %O cited By 7; Conference of 2014 4th International Conference on Mechanical Science and Engineering, ICMSE 2014 ; Conference Date: 2 January 2014 Through 4 January 2014; Conference Code:102249 %J Applied Mechanics and Materials %L scholars4408 %D 2014 %R 10.4028/www.scientific.net/AMM.472.621 %T Comparison studies of Criado and coats-Redfern methods for co-gasification of rubber seed shell with high density polyethylene mixtures %V 472 %A B.C.L. Fui %A S. Yusup %A A.A. Shoaibi %A P. Kannan %A C. Srinivasakannan %A S.A. Sulaiman %C Sanya, Hainan Island %P 621-625