Gas transport behavior of mixed-matrix membranes composed of silica nanoparticles in a polymer of intrinsic microporosity (PIM-1)

Recently, high-free volume, glassy ladder-type polymers, referred to as polymers of intrinsic microporosity (PIM), have been developed and their reported gas transport performance exceeded the Robeson upper bound trade-off for O 2/N 2 and CO 2/CH 4. The present work reports the gas transport behavio...

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Bibliographic Details
Published in:Journal of membrane science 2010, Vol.346 (2), p.280-287
Main Authors: Ahn, Juhyeon, Chung, Wook-Jin, Pinnau, Ingo, Song, Jingshe, Du, Naiying, Robertson, Gilles P., Guiver, Michael D.
Format: Article
Language:English
Subjects:
Fumed silica nanoparticle
Gas permeability
Microporous organic polymer
Mixed-matrix
Nanocomposite
Polymer of intrinsic microporosity (PIM-1)
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Summary:Recently, high-free volume, glassy ladder-type polymers, referred to as polymers of intrinsic microporosity (PIM), have been developed and their reported gas transport performance exceeded the Robeson upper bound trade-off for O 2/N 2 and CO 2/CH 4. The present work reports the gas transport behavior of PIM-1/silica nanocomposite membranes. The changes in free volume, as well as the presence and volume of the void cavities, were investigated by analyzing the density, thermal stability, and nano-structural morphology. The enhancement in gas permeability ( e.g., He, H 2, O 2, N 2, and CO 2) with increasing filler content shows that the trend is related to the true silica volume and void volume fraction.
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2009.09.047