Advertisement

Journal of Thermal Analysis and Calorimetry

, Volume 79, Issue 2, pp 389–392 | Cite as

Thermal behavior of polystyrene synthesized in the presence of carboxymethyl cellulose

  • A. F. Naves
  • P. M. Kosaka
  • J. R. Matos
  • D. F. S. Petri
Article

Summary

Study of the decomposition kinetics is an important tool for the development of polymer recycling in industrial scale. In this work, parameters such as activation energy, frequency factor and reaction order, were measured under dynamic conditions. Flynn-Wall-Ozawa, Van Krevelen, Horowitz-Metzger, Coats-Redfern, Madhusudanan and Vyazovkin methods were used to determine the kinetic parameters. The analysis of the results obtained by the Coats-Redfern method shows that the thermal degradation process of LDPE and HDPE corresponds to a phase boundary controlled reaction (mechanism R2). This method shows that the reaction order values of LDPE and HDPE are about 0.7 and 0.6, respectively.

DSC TG/DTG polystyrene carboxymethyl cellulose emulsion polymerization polydispersity 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag/Akadémiai Kiadó 2005

Authors and Affiliations

  • A. F. Naves
    • 1
  • P. M. Kosaka
    • 2
  • J. R. Matos
    • 3
  • D. F. S. Petri
    • 4
  1. 1.Instituto de Química, Universidade de São Paulo
  2. 2.Instituto de Química, Universidade de São Paulo
  3. 3.Instituto de Química, Universidade de São Paulo
  4. 4.Instituto de Química, Universidade de São Paulo

Personalised recommendations