European Journal of Chemistry 2014, 5(2), 247-251. doi:10.5155/eurjchem.5.2.247-251.971

Thermal decomposition kinetics of sodium carboxymethyl cellulose: Model-free methods

Naushad Ahmad (1) , Rizwan Wahab (2,*) , Suliman Yusuf Al-Omar (3)

(1) Department of Chemistry, King Saud University, Riyadh 11451, Kingdom of Saudi Arabia
(2) Department of Zoology, King Saud University, Riyadh 11451, Kingdom of Saudi Arabia
(3) Department of Zoology, King Saud University, Riyadh 11451, Kingdom of Saudi Arabia
(*) Corresponding Author

Received: 15 Nov 2013, Accepted: 27 Dec 2013, Published: 30 Jun 2014


Thermal analysis techniques such as thermogravimetric analysis (TGA) have been widely used because they provide rapid quantitative determination of various processes under isothermal or non-isothermal conditions. It allows the estimation of effective kinetic and thermodynamic parameters for various decomposition and thermal reactions. In this article, thermal degradation of sodium carboxymethyl cellulose (SMC) is investigated by means of dynamic thermogravimetric/derivative thermogravimetry (TG/DTG) in helium atmosphere with the flow rate 100 mL/min at the heating rate of 10-30 °C/min until the furnace wall temperature reached 700 °C. The non-isothermal degradation of SMC found to be taking place occurred major one step and minor two steps. Using a non-isothermal kinetic method based on a TGA data, kinetic parameters (Eand ln A) are calculated by Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO) and Friedman methods. The results of studied polymer demonstrated that E and ln A is varied with function of conversion (α), which is in good agreement with literature data.


Kinetics; Cellulose; Thermal reactions; Thermal degradation; Isoconversional methods; Sodium carboxymethyl cellulose

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DOI: 10.5155/eurjchem.5.2.247-251.971

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How to cite

Ahmad, N.; Wahab, R.; Al-Omar, S. Eur. J. Chem. 2014, 5(2), 247-251. doi:10.5155/eurjchem.5.2.247-251.971
Ahmad, N.; Wahab, R.; Al-Omar, S. Thermal decomposition kinetics of sodium carboxymethyl cellulose: Model-free methods. Eur. J. Chem. 2014, 5(2), 247-251. doi:10.5155/eurjchem.5.2.247-251.971
Ahmad, N., Wahab, R., & Al-Omar, S. (2014). Thermal decomposition kinetics of sodium carboxymethyl cellulose: Model-free methods. European Journal of Chemistry, 5(2), 247-251. doi:10.5155/eurjchem.5.2.247-251.971
Ahmad, Naushad, Rizwan Wahab, & Suliman Yusuf Al-Omar. "Thermal decomposition kinetics of sodium carboxymethyl cellulose: Model-free methods." European Journal of Chemistry [Online], 5.2 (2014): 247-251. Web. 23 May. 2019
Ahmad, Naushad, Wahab, Rizwan, AND Al-Omar, Suliman. "Thermal decomposition kinetics of sodium carboxymethyl cellulose: Model-free methods" European Journal of Chemistry [Online], Volume 5 Number 2 (30 June 2014)

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