THERMOGRAVIMETRY OF CHITOSAN WITH NANOFILLERS

• Authors: Anna Puchalska , Maria Mucha
• Languages of publication: EN

Abstracts

EN

In the present paper the degradation of chitosan and its blends with hydroxyapatite, nanoclay and nanosilver as well as the impact of those nanofillers added to chitosan on its decomposition at high temperatures are studied. The applied films of thickness 50 μm were obtained by casting the acidic solutions: chitosan and its blends with hydroxyapatite, nanoclay and nanosilver. To mix solutions with nanofillers ultrasounds were applied. To study the thermal degradation we applied thermogravimetry in dynamic and static conditions, which is a method of thermal analysis involving the continuous recording of weight loss Based on experimental data activation energies of thermal decomposition close to a maximum rate loss were calculated using different methods for chitosan and its blends with hydroxyapatite, nanoclay and nanosilver. The addition of three nanofillers mentioned above result in a visual increase of activation energy of thermal degradation process of chitosan due to slower evolution of decomposed gases from chitosan matrix reflected by a slower rate of weight loss.

Keywords

EN

activation energy; biopolymers; chitosan; thermogravimetry

• Publisher: Polish Chitin Society
• Journal: Progress on Chemistry and Application of Chitin and its Derivatives
• Year: 2011
• Volume: 16
• Pages: 31 - 42

Contributors

author

Anna Puchalska

• Faculty of Process and Environmental Engineering, Technical University of Lodz, ul. Wolczanska 213, 90-924, Lodz, Poland

author

Maria Mucha

• Faculty of Process and Environmental Engineering, Technical University of Lodz, ul. Wolczanska 213, 90-924, Lodz, Poland

References

• Muzzarelli R.A.A.(2009); Chitins and chitosans for the repair of wounded skin, nerve, cartilage and bone, Carbohydrate Polymers Vol. 76, pp. 167-182.
• Mucha M.; Chitosan, Versatile Polymer from Renewable Sources, WNT Warsaw, 2010.
• Pawlak A., Mucha M.; (2003) Thermogravimetric and FTIR studies of chitosan blends, Termochim. Acta., Vol. 396, pp. 153-166.
• de Brittoa D., Campana-Filho S.P.; (2007) Kinetics of the thermal degradation of chitosan, Thermochim. Acta. Vol. 465, pp. 73-82.
• Dowling D. P., Donnely K., McConnell M. L., Eloy R., Arnaud M. N.; (2001) Deposition of antibacterial silver coatings on polymeric substrates, T. Sol. Films, Vol. 398, pp. 602-606.
• Vyazovkin S., Wight C. A.; (1998) Isothermal and nonisothermal kinetics of thermally stimulated reactions of solids, Int. Rev. Phys. Chem. Vol. 17, pp. 407-433.
• Freeman E.S., Carroll B.; (1958) Interpretation of the kinetics of thermogravimetric analysis, J. Phys. Chem. Vol. 73, pp. 751-752.
• Ozawa T.; (1970) Kinetic Analysis of Derivative Curves in Thermal Analysis, J. Therm. Anal. Vol. 2, pp. 301-324.
• Horowitz H., Metzger G.; (1963) A new analysis of thermogravimetric traces, Anal. Chem. Vol. 88, pp. 1464 -1468.
• Friedman J.; (1964) Kinetics and Mechanism of Vinyl Chloride Polymerization: Effects of Additives on Polymerization Rate, Molecular Weight and Defect Concentration in the Polymer, J. Polym. Sci. Polymer Symp. Vol. 6, pp. 183-195.
• Mucha M., Matusiak B.; (2009) Water Sorption Isotherms of Chitosan and Its Blends with Nanofiller, 9th International Conference of the European Chitin Society. Conference Book. pp. 140-146.
• Zanetti M., Camilo G., Mulhaupt R.; (2001) Combustion behaviour of EVA/fluorohectorite nanocomposites, Polymer. Degr. Stab. Vol. 74, pp. pp. 413-417.
• Chen G-X., Yoon J-S.; (2005) Thermal stability of poly(L-lactide)/poly(butylene succinate)/ clay nanocomposites, Polymer. Degr. Stab. Vol. 88, pp. 206-212.
• Park H.M., Lee W. K., Park C. Y., Cho W. J. & Ha C. S.; (2003) Environmentally friendly polymer hybrids. J. Mat. Sci. Vol. 38, pp. 909-914.
• Kumar A. P., Depan D., Tomer N. S., Singh R. P.; (2009) Nanoscale particles for polymer degradation and stabilization – Trends and future perspectives. Progress in Polymer Sci. Vol. 34, pp. 379-515.
• Leszczyńska J., Njuguna K., Pielichowski J. R.; (2007) Polymer/montmorillonite nanocomposites with improved thermal properties. Part II. Thermal stability of montmorillonite nanocomposites based on different polymeric matrixes. Termochim. Acta, Vol. 454, pp. 1-22.

• Document Type: article