Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 63: Issue 1
Kinetic Study of the Thermal Decompositions of Biopolymers Extracted From Various Plants
Authors:
J. Kaloustian Université de la Méditerranée Laboratoire de Chimie Analytique, Faculté de Pharmacie 27 Boulevard J. Moulin 13385 Marseille, Cedex 5 France 27 Boulevard J. Moulin 13385 Marseille, Cedex 5 France

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A. Pauli Université de la Méditerranée Laboratoire de Chimie Analytique, Faculté de Pharmacie 27 Boulevard J. Moulin 13385 Marseille, Cedex 5 France 27 Boulevard J. Moulin 13385 Marseille, Cedex 5 France

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J. Pastor Université de la Méditerranée Laboratoire de Chimie Analytique, Faculté de Pharmacie 27 Boulevard J. Moulin 13385 Marseille, Cedex 5 France 27 Boulevard J. Moulin 13385 Marseille, Cedex 5 France

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Pages:
7–20
Online Publication Date:
02 Nov 2004
Publication Date:
25 Jan 2001
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1010199831895
Keywords:
cellulose; DTG; holocellulose; lignin; thermal decomposition
Restricted access

Abstract  

A knowledge of the kinetics of decomposition of biopolymers on heating is important mainly in two domains: forest fires and the incineration of biomass for the production of electric energy. For the study by thermogravimetry of biopolymers (cellulose, holocellulose and lignin), samples of several Mediterranean plants were used.The cellulose decomposition fits well with apparent first-order kinetics. The activation energy in an air flow is about 185 kJ mol–1. It ranges between 149 and 200 kJ mol–1 for holocellulose (cellulose+hemicellulose) in an air flow. Under nitrogen, the values are higher. Differences in the chemical structures of the hemicelluloses (pentosan and hexosan) may explain these variations. The lignins also display various chemical structures. We observed large differences in the thermal decompositions of the various samples. The decomposition rate is increased in a nitrogen flow containing 6% oxygen. We observed a correlation between the maximum decomposition rate and the heating rate. This variation presents a particular form (linear with two slopes). Only the second part seems to be interesting.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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