Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 96: Issue 1
Kinetic model of poly(3-hydroxybutyrate) thermal degradation from experimental non-isothermal data
Authors:
A. Santos Universidade Estadual Paulista Department of Analytical Chemistry, Chemistry Institute R: Prof. Francisco Degni s/n 14800-900 Araraquara, São Paulo Brazil

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L. Polese Universidade Estadual Paulista Department of Analytical Chemistry, Chemistry Institute R: Prof. Francisco Degni s/n 14800-900 Araraquara, São Paulo Brazil

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M. Crespi Universidade Estadual Paulista Department of Analytical Chemistry, Chemistry Institute R: Prof. Francisco Degni s/n 14800-900 Araraquara, São Paulo Brazil

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C. Ribeiro Universidade Estadual Paulista Department of Analytical Chemistry, Chemistry Institute R: Prof. Francisco Degni s/n 14800-900 Araraquara, São Paulo Brazil

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Pages:
287–291
Online Publication Date:
12 Mar 2009
Publication Date:
01 Apr 2009
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-006-8208-8
Keywords:
biodegradable polymers; non-isothermal kinetic; PHB thermal degradation
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Abstract  

The non-isothermal data given by TG curves for poly(3-hydroxybutyrate) (PHB) were studied in order to obtain a consistent kinetic model that better represents the PHB thermal decomposition. Thus, data obtained from the dynamic TG curves were suitably managed in order to obtain the Arrhenius kinetic parameter E according to the isoconversional F-W-O method. Once the E parameters is found, a suitable logA and kinetic model (f(α)) could be calculated. Hence, the kinetic triplet (E±SD, logA±SD and f(α)) obtained for the thermal decomposition of PHB under non-isothermal conditions was E=152±4 kJ mol−1, logA=14.1±0.2 s−1 for the kinetic model, and the autocatalytic model function was: f(α)=αm(1−α)n=α0.42(1−α)0.56.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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