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Kinetic study of the thermal and thermo-oxidative degradations of aromatic poly(ether sulfone) random copolymers bearing pendant carboxyl groups.

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Title: Kinetic study of the thermal and thermo-oxidative degradations of aromatic poly(ether sulfone) random copolymers bearing pendant carboxyl groups.
Authors: Blanco, Ignazio1 (AUTHOR) iblanco@unict.it, Cicala, Gianluca1 (AUTHOR), Samperi, Filippo2 (AUTHOR), Scamporrino, Andrea2 (AUTHOR), Tosto, Claudio1 (AUTHOR)
Source: Journal of Thermal Analysis & Calorimetry. Oct2024, Vol. 149 Issue 20, p11449-11454. 6p.
Subjects: Random copolymers, Thermal stability, Carboxyl group, Thermogravimetry, Activation energy
Abstract: A series of poly(ether sulfone) random copolymers at various loading of diphenolic acid (DPA) units were synthesized and subjected to a comprehensive kinetics degradation study to assess their thermal behaviour. Poly(ether sulfones) were synthesized from different amounts of 4,4′dihydroxydiphenylsulfone, DPA and stoichiometric quantity of 4,4′-dichlorodiphenyl sulfone by nucleophilic aromatic displacement. The apparent activation energy (Ea) of degradation for the prepared compounds was determined by using a kinetics literature method, discussed and compared with each other and with those obtained in the past for similar polymers. The comprehensive thermal stability evaluation was completed with the assessment of the initial decomposition temperature of the prepared copolymer, showing a good thermal performance but, in the meantime, suggesting caution as regards the percentage of functionalization setting the limit beyond which a deterioration of the physical properties of the copolymers at 30% of pendant carboxylic acid groups was observed. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Thermal Analysis & Calorimetry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Kinetic study of the thermal and thermo-oxidative degradations of aromatic poly(ether sulfone) random copolymers bearing pendant carboxyl groups.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Thermal+Analysis+%26+Calorimetry%22">Journal of Thermal Analysis & Calorimetry</searchLink>. Oct2024, Vol. 149 Issue 20, p11449-11454. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Random+copolymers%22">Random copolymers</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+stability%22">Thermal stability</searchLink><br /><searchLink fieldCode="DE" term="%22Carboxyl+group%22">Carboxyl group</searchLink><br /><searchLink fieldCode="DE" term="%22Thermogravimetry%22">Thermogravimetry</searchLink><br /><searchLink fieldCode="DE" term="%22Activation+energy%22">Activation energy</searchLink>
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  Data: A series of poly(ether sulfone) random copolymers at various loading of diphenolic acid (DPA) units were synthesized and subjected to a comprehensive kinetics degradation study to assess their thermal behaviour. Poly(ether sulfones) were synthesized from different amounts of 4,4′dihydroxydiphenylsulfone, DPA and stoichiometric quantity of 4,4′-dichlorodiphenyl sulfone by nucleophilic aromatic displacement. The apparent activation energy (Ea) of degradation for the prepared compounds was determined by using a kinetics literature method, discussed and compared with each other and with those obtained in the past for similar polymers. The comprehensive thermal stability evaluation was completed with the assessment of the initial decomposition temperature of the prepared copolymer, showing a good thermal performance but, in the meantime, suggesting caution as regards the percentage of functionalization setting the limit beyond which a deterioration of the physical properties of the copolymers at 30% of pendant carboxylic acid groups was observed. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Thermal Analysis & Calorimetry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10973-022-11881-9
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      – Code: eng
        Text: English
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      – SubjectFull: Random copolymers
        Type: general
      – SubjectFull: Thermal stability
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      – SubjectFull: Carboxyl group
        Type: general
      – SubjectFull: Thermogravimetry
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      – SubjectFull: Activation energy
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      – TitleFull: Kinetic study of the thermal and thermo-oxidative degradations of aromatic poly(ether sulfone) random copolymers bearing pendant carboxyl groups.
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            NameFull: Samperi, Filippo
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            NameFull: Scamporrino, Andrea
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              Text: Oct2024
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              Y: 2024
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