Thermal behavior of holo‐ and hemicellulose obtained from rice straw and bagasse

Abstract

Abstract Thermal gravimetric analysis, and differential thermal behavior of holo‐ and hemicelluloses obtained from rice straw and bagasse were investigated. Degradation was found to be of first order reaction. The activation energy values and the rate constants were calculated from the kinetic of weight loss. Hemicellulose was found to be less stable than holocellulose, and the stability of the samples was arranged in the order, rice straw holo‐ > bagasse holo‐ > rice straw hemi‐ > bagasse hemicellulose. Degradation of rice straw (holo‐ as well as hemicellulose) was performed via two exothermic processes, whereas bagasse hemicellulose combustion was completed through three exothermic processes. The magnitude and the shape of the exotherms depend, mainly, on the chemical composition of the sample.