AlCl3 × OPh2-Co-initiated cationic polymerization of anethole: Facile access to high molecular weight polymers under mild conditions

Hulnik, M.I.; Kuharenko, O.V.; Timashev, P.; Vasilenko, I.V.; Kostjuk, S.V.

Авторы: Hulnik Maksim I., Kuharenko Olga V., Timashev Peter, Vasilenko Irina V., Kostjuk Sergei V.
Журнал: European Polymer Journal
Том: 165
Год издания: 2022
Издательство: Pergamon Press Ltd.
Местоположение издательства: United Kingdom
Первая страница: 110983
DOI: 10.1016/j.eurpolymj.2021.110983
Аннотация: The AlCl3 × OPh2-co-initiated cationic polymerization of anethole, a biomass-derived vinyl monomer, in toluene and α,α,α-triflurotoluene as less toxic solvents as compared to traditionally used chlorinated ones has been reported. The investigations of the effect of temperature, solvent nature, proton trap addition as well as co-initiator concentration allowed to establish optimal conditions for the synthesis of relatively high molecular weight polymers. Polyanethole with Mn up to 21,000 g mol−1 with moderate polydispersity (Đ ≤ 3.5) were obtained in toluene at –20 °C in the presence of 2,6-lutidine as a proton trap at low co-initiator concentration (13 mM). It was shown that all synthesized polymers contain high molecular weight fraction, which is generated due to the chain transfer to monomer via its alkylation followed by the copolymerization of obtained macromonomers with anethole. The content of high molecular weight fraction can be successfully reduced down to < 7% by the increase the reaction temperature and a use of less polar solvent (toluene). The synthesized polyanetholes showed high glass transition temperature values (Tg > 237 °C), high thermal stability (Td5 > 383.5 °C) and high Young modulus (E = 3.1 ± 0.6 GPa) that makes the polymer perspective for the application as high-performance materials.
Добавил в систему: Тимашев Петр Сергеевич

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AlCl3 × OPh2-Co-initiated cationic polymerization of anethole: Facile access to high molecular weight polymers under mild conditionsстатья

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