Synthesis of novel aromatic polyamides containing both sulfone linkages and cardo groups by a recyclable palladium-catalyzed carbonylation and condensation polymerization
| العنوان: | Synthesis of novel aromatic polyamides containing both sulfone linkages and cardo groups by a recyclable palladium-catalyzed carbonylation and condensation polymerization |
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| المؤلفون: | Huali Tang, Jianying Li, Bin Huang, Mingzhong Cai |
| المصدر: | Polymer Bulletin. 79:3333-3352 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Condensation polymer, Polymers and Plastics, Chemistry, chemistry.chemical_element, Ether, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Condensation reaction, 01 natural sciences, 0104 chemical sciences, Sulfone, chemistry.chemical_compound, Polyamide, Polymer chemistry, Materials Chemistry, 0210 nano-technology, Carbonylation, Tetrahydrofuran, Palladium |
| الوصف: | A series of novel aromatic polyamides containing both sulfone linkages and cardo groups were synthesized via a heterogeneous palladium-catalyzed carbonylation and condensation reaction of aromatic diiodides bearing ether sulfone linkages, carbon monoxide, and aromatic diamines with cardo groups. Polycondensation reaction proceeded smoothly under 1 atm of CO at 120 °C in N,N-dimethylacetamide (DMAc) by using a bidentate phosphine ligand-modified magnetic nanoparticles-anchored palladium complex [2P-Fe3O4@SiO2-PdCl2] as a recyclable catalyst with 1,8-diazabicycle[5,4,0]-7-undecene (DBU) as a base, furnishing cardo poly(ether sulfone amide)s with inherent viscosities between 0.70 and 0.77 dL/g. The resulting polyamides could be readily dissolved in polar aprotic organic solvents and even dissolved in less polar pyridine and tetrahydrofuran at room temperature and could be easily converted into flexible, transparent, and tough films via casting from their solutions in DMAc. These polymers exhibited excellent thermal stability with the glass transition temperatures between 241 and 283 °C and the temperatures at 5% weight loss ranging from 438 to 475 °C in an atmosphere of nitrogen. The polyamide films displayed good mechanical behavior with tensile strengths of 78.8–84.4 MPa, tensile moduli of 2.08–2.57 GPa, and elongations at breakage of 10.2–12.5%, and optically high transparency with cut-off wavelengths in the range of 338–368 nm. |
| تدمد: | 1436-2449 0170-0839 |
| DOI: | 10.1007/s00289-021-03675-0 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::78c4ea30f58a48592efe0f990e6b746e https://doi.org/10.1007/s00289-021-03675-0 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........78c4ea30f58a48592efe0f990e6b746e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14362449 01700839 |
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| DOI: | 10.1007/s00289-021-03675-0 |