On the thermal degradation of cellulose in cotton fibers

Luis Cabrales, Noureddine Abidi

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

Thermal decomposition of cellulose has been widely studied for the past several years. It has been reported that the source of cellulose and its composition greatly affect its pyrolysis. One of the most widely used analytical tools for the study of cellulose pyrolysis is thermogravimetric (TG) analysis. Several model-fitting methods have been employed to study cellulose pyrolysis kinetics. An alternative to the model-fitting approach is the so-called model-free method developed by Vyazovkin. This isoconversional technique calculates the activation energy as a function of the degree of the conversion. In this article, the pyrolysis of cellulose in cotton fibers compared to microcrystalline cellulose (Avicel, PH 105) was investigated. TG curves were acquired as a function of the heating rates (4, 5, 8, 10, and 16 °C min -1) and the model-free method was used to analyze the data. Activation energies of cotton fibers and Avicel were obtained, and compared to the data reported in the literature. In addition, models for isothermal decomposition were calculated and compared with experimental data at the same temperature.

Original languageEnglish
Pages (from-to)485-491
Number of pages7
JournalJournal of Thermal Analysis and Calorimetry
Volume102
Issue number2
DOIs
StatePublished - Nov 2010

Keywords

  • Activation energy
  • Cellulose
  • Cotton
  • Model-free kinetics
  • TG

Fingerprint

Dive into the research topics of 'On the thermal degradation of cellulose in cotton fibers'. Together they form a unique fingerprint.

Cite this