التفاصيل البيبلوغرافية
| العنوان: |
Thermal Degradation Processes of Aromatic Poly(Ether Sulfone) Random Copolymers Bearing Pendant Carboxyl Groups |
| المؤلفون: |
Sandro Dattilo, Concetto Puglisi, Emanuele Francesco Mirabella, Angela Spina, Andrea Antonino Scamporrino, Daniela Clotilde Zampino, Ignazio Blanco, Gianluca Cicala, Giulia Ognibene, Chiara Di Mauro, Filippo Samperi |
| المصدر: |
Polymers; Volume 12; Issue 8; Pages: 1810 |
| بيانات النشر: |
Multidisciplinary Digital Publishing Institute |
| سنة النشر: |
2020 |
| المجموعة: |
MDPI Open Access Publishing |
| مصطلحات موضوعية: |
poly(ether sulfones), diphenolic acid, thermal degradation mechanisms, DPMS, Py-GC/MS |
| الوصف: |
Thermal degradation processes of poly(ether sulfone) random copolymers having different molar amount of diphenolic acid (DPA) units were studied by direct-pyrolysis/mass spectrometry, stepwise pyrolysis-gas chromatography/mass spectrometry and thermogravimetric techniques. Results highlighted that thermal degradation processes occur in the temperature range from 370 to 650 °C, yielding a char residue of 32–35 wt%, which decreases as the mol% of DPA units rises. The pyrolysis/mass spectra data allowed us to identify the thermal decomposition products and to deduce the possible thermal degradation mechanisms. Thermal degradation data suggest that the decarboxylation process of the pendant acid moiety mainly occurs in the initial step of the pyrolysis of the copolymers studied. Successively, the scission of the generated isobutyl groups occurs in the temperature range between 420 and 480 °C. Known processes involving the main chain random scission of the diphenyl sulfone and diphenyl ether groups were also observed. |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
Polymer Chemistry; https://dx.doi.org/10.3390/polym12081810 |
| DOI: |
10.3390/polym12081810 |
| الاتاحة: |
https://doi.org/10.3390/polym12081810 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.5C86EA0B |
| قاعدة البيانات: |
BASE |