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Kinetics of the Thermal and Thermo‐Oxidative Degradation of a Polystyrene–Clay Nanocomposite
Author(s) -
Vyazovkin Sergey,
Dranca Ion,
Fan Xiaowu,
Advincula Rigoberto
Publication year - 2004
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200300214
Subject(s) - nanocomposite , thermogravimetry , polystyrene , activation energy , materials science , differential scanning calorimetry , degradation (telecommunications) , kinetics , chemical engineering , polymer , calorimetry , polymer clay , composite material , chemistry , organic chemistry , thermodynamics , telecommunications , physics , quantum mechanics , computer science , engineering
Summary: Thermogravimetry and differential scanning calorimetry have been used to study the thermal and thermo‐oxidative degradation of polystyrene (PS) and a PS–clay nanocomposite. An advanced isoconversional method has been applied for kinetic analysis. Introduction of the clay phase increases the activation energy and affects the total heat of degradation, which suggests a change in the reaction mechanism. The obtained kinetic data permit a comparative assessment of the fire resistance of the studied materials.The change in activation energy for the degradation of PS and the PS–clay nanocomposite with the extent of polymer conversion.