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Stabilization of gas transport properties of PTMSP with porous aromatic framework: effect of annealingстатья
Статья опубликована в высокорейтинговом журнале
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: 15 декабря 2016 г.
- Авторы: Volkov A.V., Bakhtin D.S., Kulikov L.A., Terenina M.V., Golubev G.S., Bondarenko G.N., Legkov S.A., Shandryuk G.A., Volkov V.V., Khotimskiy V.S., Belogorlov A.A., Maksimov A.L., Karakhanov E.A.
- Журнал: Journal of Membrane Science
- Том: 517
- Год издания: 2016
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 80
- Последняя страница: 90
- DOI: 10.1016/j.memsci.2016.06.033
- Аннотация: This work was focused on the study of physical aging of PTSMP and preventing this effect via incorporation of porous aromatic frameworks (PAF-11). The dense PTMSP membranes with PAF-11 content of 0, 1, 5 and 10 wt % were stepwise annealed in air at 100 °C for up to 510 hours with constant monitoring of O2, N2 and CO2 permeability (measured at 30 °C). As-cast and aged PTMSP samples were characterized by means of helium pycnometry, dynamic mechanical analysis and IR spectroscopy. Gas transport characteristics of the PTMSP sample containing 10 wt % of PAF-11 became stable upon annealing at 100 °С within the short time interval (100-200 hours). However, for all other samples containing 5 wt % of PAF-11 or less, gas permeability gradually decreased with time. According to the IR analysis, upon high-temperature treatment, PAF-11 nanoparticles tended to migrate from the sub-layer region into the membrane matrix bulk. According to the helium picnometry, the introduction of PAF-11 to the PTMSP matrix provided a loosened packaging of polymer chains, and the structure became more stabilized since the porous filler served as a “physical” cross-linker.
- Добавил в систему: Куликов Леонид Андреевич