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Synthesis of Functional Poly(ε-caprolactone)s via Living Ring-Opening Polymerization of ε-Caprolactone Using Functionalized Aluminum Alkoxides as Initiatorsстатья
- Авторы: Piskun Yulia A., Vasilenko Irina V., Zaitsev Kirill V., Oprunenko Yuri F., Kostjuk Sergei V.
- Журнал: Macromolecular Chemistry and Physics
- Год издания: 2017
- Издательство: John Wiley & Sons Ltd.
- Местоположение издательства: United Kingdom
- DOI: 10.1002/macp.201600580
- Аннотация: The new aluminum compounds 1–3 modified by unsaturated alcohol, Me3−nAl(O(CH2)4OCHCH2)n (n = 1 (1), 2 (2), 3 (3)), are synthesized and investigated by multinuclear (1H, 13C, 27Al) NMR spectroscopy. The compounds 1–3 initiate living ring-opening polymerization of ε-caprolactone in bulk at 40–80 °C to afford polyesters with controlled molecular weight (Mn up to 35 000 g mol−1) and relatively narrow molecular weight distribution (Mw/Mn < 1.8). Among initiators studied here, aluminum trialkoxide shows the highest activity, whereas aluminum dialkoxide is a less active. In all cases, the fragment of unsaturated alcohol is transferred to the end of the polymeric chain with high degree of functionality (>85%) yielding macromonomers. These macromonomers are copolymerized with maleic anhydride to give poly(vinyl ether-co-maleic anhydride)g-poly(ε-caprolactone) graft copolymers.
- Добавил в систему: Зайцев Кирилл Владимирович