Isoconversional Kinetic Analysis of Thermally Stimulated Processes in Polymers

Isoconversional kinetic analysis involves evaluating a dependence of the effective activation energy on conversion or temperature and using this dependence for making kinetic predictions and for exploring the mechanisms of thermally stimulated processes. The paper discusses major results obtained by...

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Bibliographic Details
Published in:Macromolecular rapid communications. Vol. 27; no. 18; pp. 1515 - 1532
Main Authors: Vyazovkin, Sergey, Sbirrazzuoli, Nicolas
Format: Journal Article
Language:English
Published: Weinheim WILEY-VCH Verlag 22.09.2006
WILEY‐VCH Verlag
Wiley
Subjects:
Applied sciences
Chemical reactions and properties
Crosslinking, vulcanization
Crystallization
curing of polymers
Degradation
Exact sciences and technology
glass transition
kinetics
Organic polymers
Physicochemistry of polymers
Properties and characterization
Glass transition
Melt crystallization
State of the art
curing of polymers
Investigation method
Thermooxidative degradation
crystallization
Polymer
Crosslinking
degradation
Kinetics
Thermal degradation
ISSN:1022-1336, 1521-3927
Online Access:Get full text
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Summary:Isoconversional kinetic analysis involves evaluating a dependence of the effective activation energy on conversion or temperature and using this dependence for making kinetic predictions and for exploring the mechanisms of thermally stimulated processes. The paper discusses major results obtained by the authors in the area of the isoconversional analysis of polymer kinetics over the past decade. It provides a brief introduction to isoconversional methods and surveys the impact made by isoconversional analysis in several application areas that include kinetic predictions, thermal degradation, crosslinking (curing), glass transition, and glass and melt crystallization. It is concluded that isoconversional analysis has been used broadly and fruitfully because it presents a fortunate compromise between the single‐step Arrhenius kinetic treatments and the prevalent occurrence of processes whose kinetics are multi‐step and/or non‐Arrhenius. An isoconversional method applies the Arrhenius equation to a narrow temperature region, ΔT related to a given extent of conversion.
Bibliography:istex:E2AF8FEE95D559C52F2AB44F2938C7635B68133E
ark:/67375/WNG-SW00DPF3-T
ArticleID:MARC200600404
ISSN:1022-1336
1521-3927
DOI:10.1002/marc.200600404