Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 86: Issue 2
Thermal analysis kinetics applied to flame retardant polycarbonate
Authors:
H. Polli UNIFACS – Salvador University Department of Chemical Engineering Salvador Brazil BA 40.220-141 Av. Cardeal da Silva, 132 Salvador Brazil BA 40.220-141 Av. Cardeal da Silva, 132

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L. Pontes UNIFACS – Salvador University Department of Chemical Engineering Salvador Brazil BA 40.220-141 Av. Cardeal da Silva, 132 Salvador Brazil BA 40.220-141 Av. Cardeal da Silva, 132

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M. Souza UFS – Federal University of Sergipe Department of Chemical Engineering São Cristovão Brazil Sergipe 49.000-00 São Cristovão Brazil Sergipe 49.000-00

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V. Fernandes Jr UFRN – Federal University of Rio Grande do Norte Department of Chemistry Natal Brazil RN 59078-970 CP 1662 Natal Brazil RN 59078-970 CP 1662

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A. Araujo UFRN – Federal University of Rio Grande do Norte Department of Chemistry Natal Brazil RN 59078-970 CP 1662 Natal Brazil RN 59078-970 CP 1662

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Pages:
469–473
Online Publication Date:
23 May 2006
Publication Date:
01 Nov 2006
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-005-7289-0
Keywords:
flame retardant; model-free kinetics; polycarbonate; thermal degradation; thermogravimetry
Restricted access

Abstract  

The degradation kinetics of polycarbonate with flame retardant additive was investigated by means of thermogravimetric analysis. The samples were heated from 30 to 900C in nitrogen atmosphere, with three different heating rates: 5, 10 and 20C min–1. The Vyazovkin model-free kinetics method was applied to calculate the activation energy (Ea) of the degradation process as a function of conversion and temperature. The results indicated that the polycarbonate without flame retardant additive starts to loose mass slightly over 380C and the polycarbonate with flame retardant additive, slightly over 390C (with heating rate of 5C min–1). The activation energy for flame retardant polycarbonate and normal polycarbonate were 190 and 165 kJ mol–1, respectively.

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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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