Unsaturated polyketones — a new type of functionalized rubbers

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作者

Konstantin Dubkov¹ , Sergej Semikolenov¹ , Maxim Kharitonov¹

1. Boreskov Institute of Catalysis

会议/活动

The 8th Asian Symposium on Advanced Materials (ASAM-8), July 2023 (Novosibirsk, Russian Federation)

海报摘要

The so-called ketonization reaction of nitrous oxide (N2O) with butadiene rubbers having different contents of 1,2-units was studied. The ketonization of rubbers (5 g) by N2O (0.186 mol) was performed batchwise in a Parr reactor (100 ml) in a benzene solvent (60 ml) at 200–230°C and elevated pressure. The reaction products were characterized by gel-penetrating chromatography, 13C NMR, and 1H NMR spectroscopy. A series of functionalized polymers and oligomers of a new type, unsaturated polyketones, with varying molecular weights and contents of carbonyl, mainly ketone, groups was obtained. GPC measurements demonstrated that molecular weight of polymers decreases with increasing conversion of C=C bonds and amount of the oxygen introduced from N2O. According to NMR data, upon ketonization of both rubbers, mainly ketone groups randomly distributed along the backbone are formed by the reaction of N2O with internal C=C bonds in 1,4-units.

关键词

Selective oxidation, Nitrous oxide, Polybutadiene, Functionalization, Unsaturated polyketones

研究领域

Chemistry

参考文献

1. Parmon V.N.; Panov G.I., Uriarte A., Noskov A.S., Catal. Today, 2005, 100, 115-131.
2. Dubkov K.A., Panov G.I., Parmon V.N., Russ. Chem. Rev., 2017, 86, 510–529.
3. Sidorov O.I., Dubkov K.A., Semikolenov S.V., et al., Polym. Sci., Ser. D, 11(2018) 215-224.
4. Sidorov O.I., Evseev N.E., Dubkov K.A., et al., Polym. Sci., Ser. D, 13(2020) 85-88.

基金

暂无数据

补充材料

暂无数据

附加信息

利益冲突

No competing interests were disclosed.

数据可用性声明

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

知识共享许可协议

Copyright © 2023 Dubkov et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.