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Gas-transport properties of novel composites based on addition poly(3-trimethylsilyltricyclononene-7) and substituted cyclodextrinesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 апреля 2017 г.
- Авторы: Chapala P.P., Bermeshev M.V., Starannikova L.E., Shantarovich V.P., Gavrilova N.N., Yampolskii Yu P., Finkelshtein E.Sh
- Журнал: Polymer Composites
- Том: 36
- Номер: 6
- Год издания: 2015
- Издательство: John Wiley & Sons Inc.
- Местоположение издательства: United States
- Первая страница: 1029
- Последняя страница: 1038
- DOI: 10.1002/pc.23432
- Аннотация: In this work we report the preparation and properties of composite materials for gas separatuion membranes based on highly permeable addition poly(3-trimethylsilyltricyclononene-7) (PTCNSi1) as a matrix and substituted cyclodextrines (CD) as fillers. CD studied had different structure and this allowed as to explore correlations between the structure of the fillers and gas permeation parameters of the resulting compositions. Namely alpha-,beta - and gamma-cyclodextrines with Me- or Me3Si-substituents were synthesired and the composites containing them were prepared. Permeability coefficients of the obtained composites were determined for He, H2, O2, N2, CO2, CH4. It was found that the introduction of cyclodextrines with bulky Me3Si-groups rather weakly influenced the permeability coefficients for Heand H2, while for other gases a marked decrease in permeability was observed. On the other hand, in the case of the composites containing Me-substituted CD decreases in permeability were observed for all the studied gases.Thechanges of gas permeability dramatically depend on the size of gas molecules and this results in an icrease in selectivities for some gas pairs. Thus, introduction of alpha-CD with Me-groups resulted in increase in selectivity H2/N2 from 5.2 for pure polymer to 9.1. The increase in CD content in a composite gave an extra growth of selectivities. BET, TEM, WAXD, positron annihilation data (free volume) and mechanical properties of the composites also studied and discussed.
- Добавил в систему: Чапала Павел Петрович