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- W1995948215 abstract "Gas permeabilities in poly[1-(trimethylsilyl)-1-propyne] (PTMSP) are orders of magnitude larger than in other glassy polymers such gas polycarbonate. Based on solubility, permeability and other data, it is concluded that fast diffusion (and not a large solubility) is responsible; and that the polymer has ∼25 vol% of voids which may be linked through chain-to-chain gaps at least ∼3 Å wide, suggesting that PTMSP may be“microporous”. Further evidence for the connectivity of microvoids in PTMSP is offered by mixture permeation results. The permeability of a light gas such as He or N2 is drastically reduced by the co-permeation of a more strongly sorbing and/or more condensable species such as SF6. The extent of this light gas rejection is within the scope of mixture permeation under the pore transport model — via competitive adsorption/surface-diffusion and pore blocking — but appears to exceed expectations based on the dual-mode sorption model — which tacitly takes the microvoids to be not connected." @default.
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- W1995948215 date "1994-01-01" @default.
- W1995948215 modified "2023-10-14" @default.
- W1995948215 title "Elucidating the mechanism(s) of gas transport in poly[1-(trimethylsilyl)-1-propyne] (PTMSP) membranes" @default.
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- W1995948215 doi "https://doi.org/10.1016/0376-7388(93)e0128-7" @default.
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