Polystyrene/hematite composites: thermal degradation kinetics

The kinetics of thermal degradation of polystyrene/Fe2O3 composites was studied by dynamic thermogravimetry. The samples were heated in nitrogen atmosphere, applying three different heating rates 5, 20, and 40°C/min. We calculated kinetic parameters using modified KAS isoconversional method. Results...

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Bibliographic Details
Published in:Journal of composite materials 2011-04, Vol.45 (7), p.839-847
Main Authors: Kuljanin-Jakovljević, J., Marinović-Cincović, M., Stojanović, Z., Krklješ, A., Abazović, N.D., Čomor, M.I.
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Technology of polymers
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Summary:The kinetics of thermal degradation of polystyrene/Fe2O3 composites was studied by dynamic thermogravimetry. The samples were heated in nitrogen atmosphere, applying three different heating rates 5, 20, and 40°C/min. We calculated kinetic parameters using modified KAS isoconversional method. Results showed that polystyrene in all composites has higher thermal degradation activation energies compared to pure polystyrene. Maximal activation energy of thermal degradation is achieved for PS/Fe2O3 composite with about 10% of filler. Vyazovkin model-free method was used to predict thermal degradation parameters.
ISSN:0021-9983
1530-793X
DOI:10.1177/0021998310377940