Direct fluorination of poly-2,6-dimethyl-1,4-phenylene oxide in perfluorinated liquid medium
| Autor: | Alexander M. Perepuchov, Dmitrii A. Mukhortov, Nikolay A. Belov, Yulia V. Kostina, Valentin Valerievich Kapustin, Ilya A. Blinov, Alexander Alentiev, Pavel Sergeevich Kambur, Marina Pavlovna Kambur, Galina N. Bondarenko, S. A. Legkov, S. V. Chirkov, Yurii P. Yampolskii, Ekaterina Sergeevna Kurapova, Olesia N. Vozniuk |
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| Rok vydání: | 2020 |
| Předmět: |
010405 organic chemistry
Organic Chemistry Oxide chemistry.chemical_element Ether Liquid medium 010402 general chemistry 01 natural sciences Biochemistry First generation 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound 13c nmr spectroscopy chemistry Phenylene Polymer chemistry Fluorine Environmental Chemistry Physical and Theoretical Chemistry Inert gas |
| Zdroj: | Journal of Fluorine Chemistry. 234:109526 |
| ISSN: | 0022-1139 |
| DOI: | 10.1016/j.jfluchem.2020.109526 |
| Popis: | Ultra-disperse powder of poly-2,6-dimethyl-1,4-phenylene oxide (PPO) was fluorinated using elemental fluorine in a gas-liquid bubble reactor. For characterization of the obtained fluorinated products ATR-FTIR and 1H, 19F and 13C NMR spectroscopy and DSC were used. The concentration of fluorine in the mixture with inert gas affected directly the rate of PPO fluorination and, herewith an increase of the temperature of fluorination in the range of 20–90 °C resulted in a growth of the rate only by factor 1.1–1.6. Two different types of fluorinated polymers were obtained: partly fluorinated PPO (“first generation”) and fully fluorinated substance with the structure similar to poly(perfluorocyclohexenyl ether) (“second generation”). |
| Databáze: | OpenAIRE |
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