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Nonisothermal melt and cold crystallization kinetics of poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate)/carbon black compounds. Evaluation of Pseudo-Avrami, Ozawa, and Mo models

Published online by Cambridge University Press:  03 March 2016

Renate M.R. Wellen  and
Eduardo L. Canedo
Renate M.R. Wellen*
Affiliation:
Materials Engineering Department, Federal University of Paraíba, João Pessoa, Paraíba 58051-900, Brazil
Eduardo L. Canedo
Affiliation:
Materials Engineering Department, Federal University of Campina Grande, Campina Grande, Paraíba 58429-140, Brazil; and Pernambuco Institute of Technology, Recife, Pernambuco 50740-521, Brazil
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Three classical methods (Pseudo-Avrami, Ozawa, and Mo models) were used to correlate nonisothermal melt and cold crystallization kinetics data of neat poly(3-hydroxybutyrate) (PHB) and PHB/carbon black compounds, measured by differential scanning calorimetry. The applicability of the three models was tested comparing model predictions with experimental data. Results suggest that Pseudo-Avrami model fits the experimental data well. Ozawa model does not fit data well, as verified by the large uncertainties and unphysical values of the fitting parameters. Mo model may be considered adequate if moderately deviations could be tolerated. Datasets of all compositions are included as the Supplementary Information.

Keywords

PHBcarbon blacknonisothermal crystallization kinetics
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 6 , 28 March 2016 , pp. 729 - 739
Copyright
Copyright © Materials Research Society 2016 

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References

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