Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 88: Issue 3
Kinetic parameters obtained for thermal decomposition of acrylic resins present in commercial paint emulsions
Authors:
Marisa Crespi Universidade Estadual Paulista, Instituto de Química Departamento de Química Analítica R. Prof. Francisco Degni, s/n CP 355 CEP 14801-970 Araraquara SP Brazil

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Marcia Hikosaka Universidade Estadual Paulista, Instituto de Química Departamento de Química Analítica R. Prof. Francisco Degni, s/n CP 355 CEP 14801-970 Araraquara SP Brazil

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Graziela Amaral Universidade Estadual Paulista, Instituto de Química Departamento de Química Analítica R. Prof. Francisco Degni, s/n CP 355 CEP 14801-970 Araraquara SP Brazil

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C. Ribeiro Universidade Estadual Paulista, Instituto de Química Departamento de Química Analítica R. Prof. Francisco Degni, s/n CP 355 CEP 14801-970 Araraquara SP Brazil

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Pages:
669–672
Online Publication Date:
27 Jul 2007
Publication Date:
01 Jun 2007
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-006-8035-y
Keywords:
acrylic resin; kinetic parameters; paint emulsions; thermal behavior
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Abstract  

Samples of water based commercial acrylic resin paints were spread in a film form on slides, dried at room temperature and exposed to solar radiation for up to eight months. The characterization and quantification of resins and charges in the white paint emulsion were carried out for the thermal decomposition. Besides this, X-ray diffractometry was used to identify CaCO3 as charge and TiO2 (rutile phase) as pigment. It was observed through thermal techniques similar behavior to the samples even though with varied exposure time. Kinetic studies of the samples allowed to obtain the activation energy (Ea) and Arrhenius parameters (A) to the thermal decomposition of acrylic resin to three different commercial emulsion (called P1, P2, P3) through non-isothermal procedures. The values of Ea varied regarding the exposition time (eight months) and solar radiation from 173 to 197 kJ mol−1 (P1 sample), from 175 to 226 kJ mol−1 (P2 sample) and 206 to 197 kJ mol−1 (P3 sample). Kinetic Compensation Effect (KCE) observed for samples P2 and P3 indicate acrylic resin s present in these may be similar in nature. This aspect could be observed by a small difference in the thermal behavior of the TG curves from P1 to P2 and P3 sample. The simulated kinetic model to all the samples was the autocatalytic Šesták-Berggreen.

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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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