Research the Thermal Decomposition Processes of Copolymers Based on Polypropyleneglycolfumaratephthalate with Acrylic Acid
Kinetics of thermal degradation of polymeric materials is usually studied by weight loss at a constant temperature or during heating. Hence, the activation energy and other kinetic parameters of the thermal destruction process are determined. One of the fastest and most accessible methods for studyi...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/7/1725 |
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| author | Akmaral Zh. Sarsenbekova Gaziza M. Zhumanazarova Yerkeblan M. Tazhbayev Gulshakhar K. Kudaibergen Saule K. Kabieva Zhannur A. Issina Aigul K. Kaldybayeva Arailym O. Mukabylova Muslim A. Kilybay |
| author_facet | Akmaral Zh. Sarsenbekova Gaziza M. Zhumanazarova Yerkeblan M. Tazhbayev Gulshakhar K. Kudaibergen Saule K. Kabieva Zhannur A. Issina Aigul K. Kaldybayeva Arailym O. Mukabylova Muslim A. Kilybay |
| author_sort | Akmaral Zh. Sarsenbekova |
| collection | DOAJ |
| description | Kinetics of thermal degradation of polymeric materials is usually studied by weight loss at a constant temperature or during heating. Hence, the activation energy and other kinetic parameters of the thermal destruction process are determined. One of the fastest and most accessible methods for studying the kinetics of these processes is TGA. Weight methods of TGA do not provide an opportunity to judge the proportion of gaseous degradation products. This is especially true for processes associated with the release of hydrogen and other substances with low molecular weights, the accuracy of determining the amount of which by the weight method is low. Meanwhile, the study of the gas evolution process can provide additional information about the kinetics and mechanism of thermal destruction processes. Of great interest is also the joint study of the total weight loss and gas evolution during the polymer heating. Using mass spectrometry, IR spectroscopy combined with thermal analysis (TGA/DSC-IR and TGA/DSC-MS) we have defined product composition and thermal destruction kinetics. As a result of the TGA/DSC-MS study of gaseous products of thermolysis in nitrogen atmosphere, there were found products with 44, 45, 59, 60, 68, and 88 phr. Quite a similar pattern for p-PGFPh:AA copolymers is also observed in TGA/DSC-IR studies: the same products and the same temperature range. However, in contrast to the TGA/DSC-MS study, CO release was also recorded by this method (weak signal). Kinetic characteristics of the processes were determined based on Friedman, Ozawa-Flynn-Wall and modified NPC methods. Obtained values of the activation energy and thermodynamic characteristics make it possible to predict the composition of polymers, which make a significant contribution to the development of theoretical ideas about the features of the physicochemical properties of polymers. |
| first_indexed | 2024-03-11T05:27:18Z |
| format | Article |
| id | doaj.art-f38b03f9d36741898ef85cd8ee6a0aef |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T05:27:18Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
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| series | Polymers |
| spelling | doaj.art-f38b03f9d36741898ef85cd8ee6a0aef2023-11-17T17:26:39ZengMDPI AGPolymers2073-43602023-03-01157172510.3390/polym15071725Research the Thermal Decomposition Processes of Copolymers Based on Polypropyleneglycolfumaratephthalate with Acrylic AcidAkmaral Zh. Sarsenbekova0Gaziza M. Zhumanazarova1Yerkeblan M. Tazhbayev2Gulshakhar K. Kudaibergen3Saule K. Kabieva4Zhannur A. Issina5Aigul K. Kaldybayeva6Arailym O. Mukabylova7Muslim A. Kilybay8Chemistry Faculty, Karaganda Buketov University, Karaganda 100024, KazakhstanDepartment of Chemical Technology and Ecology, Karaganda Industrial University, Temirtau 101400, KazakhstanChemistry Faculty, Karaganda Buketov University, Karaganda 100024, KazakhstanNational Center for Biotechnology, Astana 100000, KazakhstanDepartment of Chemical Technology and Ecology, Karaganda Industrial University, Temirtau 101400, KazakhstanChemistry Faculty, Karaganda Buketov University, Karaganda 100024, KazakhstanDepartment of Pharmaceutical and Toxicological Chemistry, Pharmacognosy and Botany, Asfendiyarov Kazakh National Medical University, Almaty 050060, KazakhstanChemistry Faculty, Karaganda Buketov University, Karaganda 100024, KazakhstanChemistry Faculty, Karaganda Buketov University, Karaganda 100024, KazakhstanKinetics of thermal degradation of polymeric materials is usually studied by weight loss at a constant temperature or during heating. Hence, the activation energy and other kinetic parameters of the thermal destruction process are determined. One of the fastest and most accessible methods for studying the kinetics of these processes is TGA. Weight methods of TGA do not provide an opportunity to judge the proportion of gaseous degradation products. This is especially true for processes associated with the release of hydrogen and other substances with low molecular weights, the accuracy of determining the amount of which by the weight method is low. Meanwhile, the study of the gas evolution process can provide additional information about the kinetics and mechanism of thermal destruction processes. Of great interest is also the joint study of the total weight loss and gas evolution during the polymer heating. Using mass spectrometry, IR spectroscopy combined with thermal analysis (TGA/DSC-IR and TGA/DSC-MS) we have defined product composition and thermal destruction kinetics. As a result of the TGA/DSC-MS study of gaseous products of thermolysis in nitrogen atmosphere, there were found products with 44, 45, 59, 60, 68, and 88 phr. Quite a similar pattern for p-PGFPh:AA copolymers is also observed in TGA/DSC-IR studies: the same products and the same temperature range. However, in contrast to the TGA/DSC-MS study, CO release was also recorded by this method (weak signal). Kinetic characteristics of the processes were determined based on Friedman, Ozawa-Flynn-Wall and modified NPC methods. Obtained values of the activation energy and thermodynamic characteristics make it possible to predict the composition of polymers, which make a significant contribution to the development of theoretical ideas about the features of the physicochemical properties of polymers.https://www.mdpi.com/2073-4360/15/7/1725dynamic thermogravimetrypolypropyleneglycolfumaratephthalateacrylic acidkinetic analysisactivation energypreexponential factor |
| spellingShingle | Akmaral Zh. Sarsenbekova Gaziza M. Zhumanazarova Yerkeblan M. Tazhbayev Gulshakhar K. Kudaibergen Saule K. Kabieva Zhannur A. Issina Aigul K. Kaldybayeva Arailym O. Mukabylova Muslim A. Kilybay Research the Thermal Decomposition Processes of Copolymers Based on Polypropyleneglycolfumaratephthalate with Acrylic Acid Polymers dynamic thermogravimetry polypropyleneglycolfumaratephthalate acrylic acid kinetic analysis activation energy preexponential factor |
| title | Research the Thermal Decomposition Processes of Copolymers Based on Polypropyleneglycolfumaratephthalate with Acrylic Acid |
| title_full | Research the Thermal Decomposition Processes of Copolymers Based on Polypropyleneglycolfumaratephthalate with Acrylic Acid |
| title_fullStr | Research the Thermal Decomposition Processes of Copolymers Based on Polypropyleneglycolfumaratephthalate with Acrylic Acid |
| title_full_unstemmed | Research the Thermal Decomposition Processes of Copolymers Based on Polypropyleneglycolfumaratephthalate with Acrylic Acid |
| title_short | Research the Thermal Decomposition Processes of Copolymers Based on Polypropyleneglycolfumaratephthalate with Acrylic Acid |
| title_sort | research the thermal decomposition processes of copolymers based on polypropyleneglycolfumaratephthalate with acrylic acid |
| topic | dynamic thermogravimetry polypropyleneglycolfumaratephthalate acrylic acid kinetic analysis activation energy preexponential factor |
| url | https://www.mdpi.com/2073-4360/15/7/1725 |
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