Kinetic analysis of poly(ethylene oxide)/lithium montmorillonite nanocomposites

Poly(ethylene oxide)/lithium montmorillonite (PEO/LiMMT) nanocomposites were prepared by melt intercalation method. The degradation of PEO/LiMMT nanocomposites was performed by non-isothermal thermogravimetry in nitrogen atmosphere at four heating rates (2.5, 5, 10 and 20 °C min −1 ). The obtained d...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2017, Vol.127 (1), p.789-797
Main Authors: Erceg, Matko, Krešić, Irena, Jakić, Miće, Andričić, Branka
Format: Article
Language:English
Subjects:
Activation energy
Analysis
Analytical Chemistry
Calorimetry
Chemistry
Chemistry and Materials Science
Clay
Degradation
Ethylene oxide
Inorganic Chemistry
Lithium
Mathematical models
Measurement Science and Instrumentation
Montmorillonite
Nanocomposites
Nonlinear analysis
Oxides
Physical Chemistry
Polyethylene oxide
Polymer Sciences
Regression analysis
Thermal degradation
Thermogravimetry
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Summary:Poly(ethylene oxide)/lithium montmorillonite (PEO/LiMMT) nanocomposites were prepared by melt intercalation method. The degradation of PEO/LiMMT nanocomposites was performed by non-isothermal thermogravimetry in nitrogen atmosphere at four heating rates (2.5, 5, 10 and 20 °C min −1 ). The obtained data were used for the kinetic analysis of the degradation process. Kinetic analysis was performed using the isoconversional Friedman method in combination with the multivariate nonlinear regression method. Kinetic analysis revealed the complexity of the thermal degradation process for both pure PEO and all PEO/LiMMT nanocomposites. The contribution of the each individual degradation stage was determined, and each of them was independently analyzed. Kinetic parameters (activation energy, pre-exponential factor and kinetic model) were also calculated for each degradation stage of all investigated samples.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-016-5413-y