Study of thermal stability and determination of effective activation energy values during degradation of unsaturated polyester copolymers in the air atmosphere
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F22%3A10452906" target="_blank" >RIV/00216208:11310/22:10452906 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11410/22:10452906
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=YSteigNVl5" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=YSteigNVl5</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.31489/2022Ch1/86-91" target="_blank" >10.31489/2022Ch1/86-91</a>
Alternative languages
Result language
angličtina
Original language name
Study of thermal stability and determination of effective activation energy values during degradation of unsaturated polyester copolymers in the air atmosphere
Original language description
The study of the kinetic parameters of copolymers based on polyethylene glycol fumarates, as well as the external and internal effects on them, is essential for production processes at various levels. This will solve a whole range of issues in the field of the shelf life of materials and storage conditions. All these point to the relevance of this research. The authors of the research attempt to test the most common thermogravimetric data processing methods and to improve them in terms of the quality of the predictive capabilities of the resulting regression equation. Both of them are important for the production of initial components and the manufacture of the final product from the studied materials. Therefore, the study and further use of the numerical data of the TG/DTA curves applies to both theoretical and practical branches of science. Thus, summarizing the experimental data on the thermal stability studies, we assume that p-EGF: AA copolymers with compositions of 21.03:78.97 and 68.96:31.04 wt.% have a relatively high degree of resistance to heating. It was found that the calculation by the FR method agreed well with the results of the KAS method. It should be noted that for the p-EGF: AA copolymer (21.03:78.97 wt.%) at heating rates of 5.0, 10.0, 20.0 °C.min(-1), the average activation energy data obtained for two methods increase in the following series: (E)over bar(KAS) = 187.34 kJ /mol < (E)over bar(FR) = 200.17 kJ/mol.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Bulletin of Karaganda State University, Series chemistry
ISSN
2518-718X
e-ISSN
2663-4872
Volume of the periodical
neuveden
Issue of the periodical within the volume
105
Country of publishing house
KZ - KAZAKSTAN
Number of pages
6
Pages from-to
86-91
UT code for WoS article
000779717000009
EID of the result in the Scopus database
2-s2.0-85129783901