Study on Thermal and Flame Retardant Properties of Phosphorus-containing Polyimides
| Autor: | Ion Anghel, Dana-Maria Preda, Corneliu Hamciuc, Tachita Vlad-Bubulac, Ioana-Emilia Şofran, Diana Serbezeanu, Elena Hamciuc, Gabriela Lisa |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Chemical engineering Materials Science (miscellaneous) Process Chemistry and Technology Phosphorus containing Thermal Materials Chemistry General Engineering General Chemistry General Medicine General Pharmacology Toxicology and Pharmaceutics General Biochemistry Genetics and Molecular Biology Fire retardant |
| Zdroj: | Revista de Chimie. 72:13-21 |
| ISSN: | 2668-8212 0034-7752 |
| DOI: | 10.37358/rc.21.4.8452 |
| Popis: | The present study aimed to design macromolecular architectures having imide core in the main chain and bearing two 9,10-dihydro-oxa-10-phosphaphenanthrene-10-oxide heterocycles in the side chain of each structural units as a synergetic two components key factor to induce attractive flame retardant properties in the resulted materials. The synthesis pathway consisted in the classical polycondensation reaction strategy using a phosphorus-containing diamine synthesized in the laboratory and three commercial dianhydrides co-monomers. The chemical structure confirmation of the phosphorus-containing polyimides has been performed by means of FTIR and NMR spectroscopy. The thermal stability of the products was introspected through TGA analysis. The char yields measured at 900oC ranged between 35% and 54%. Using these parameters limiting oxygen index values were theoretically calculated. Also, the microscale combustion calorimetry measurements have been conducted, in order to investigate the combustion mechanism of the synthesized phosphorus-containing polyimides. |
| Databáze: | OpenAIRE |
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