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Crosslinking of addition copolymers from tricyclononenes bearing (CH3)3Si- and (C2H5O)3Si-groups as a modification of membrane gas separation materialsстатья Исследовательская статья
- Авторы: Alentiev Dmitry A., Egorova Elena S., Bermeshev Maxim V., Starannikova Ludmila E., Yampolskii Yuri P., Finkelshtein Eugene Sh
- Журнал: Polymer Engineering and Science
- Год издания: 2019
- Издательство: John Wiley & Sons Inc.
- Местоположение издательства: United States
- DOI: 10.1002/pen.25128
- Аннотация: Here, we report the synthesis and the study of gas-transport properties of crosslinked highly permeable copolymers from Si-containing norbornene derivatives. The initial high-molecular-weight copolymers were prepared via addition copolymerization of 3-trimethylsilyltricyclo[4.2.1.02,5]non-7-ene (TCNSi1) with 3-triethoxysilyltricyclo[4.2.1.02,5]non-7-ene (TCNSiOEt) in good or high yields using a Pd-catalyst. The obtained copolymers included up to 10 mol% of TCNSiOEt units bearing reactive Si–O–C-containing substituents. The crosslinking was readily realized by using simple sol–gel chemistry in the presence of Sn-catalyst. The formed crosslinked copolymers were insoluble in common organic solvents. Permeability coefficients of various gases (He, H2, O2, N2, CO2, CH4, C2H6, C3H8, n-C4H10) in these copolymers before and after crosslinking were determined and the influence of the incorporated TCNSiOEt units as well as the crosslinking on gas transport properties were established. As a result, it was found that only a small reduction of gas-permeability was observed when TNCSiOEt units were incorporated into the main chains, and the copolymers were crosslinked. At the same time, the selectivity for C4H10/CH4 pair was increased. The suggested approach has allowed obtaining crosslinked polymers from Si-containing monomers without a loss of the main membrane characteristics. POLYM. ENG. SCI., 00:000–000, 2019. © 2019 Society of Plastics Engineers
- Добавил в систему: Безгин Денис Андреевич