Gas and Vapor Transport in Mixed Matrix Membranes Based on Amorphous Teflon AF1600 and AF2400 and Fumed Silica (Record no. 46529)

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control field MX-MdCICY
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control field 20250625153850.0
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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-12319
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Title Gas and Vapor Transport in Mixed Matrix Membranes Based on Amorphous Teflon AF1600 and AF2400 and Fumed Silica
490 0# - SERIES STATEMENT
Volume/sequential designation Ind. Eng. Chem. Res., 49(23), p.11920-11935, 2010
520 3# - SUMMARY, ETC.
Summary, etc. The enhancement of gas and vapor transport rates induced by the addition of fumed silica nanoparticles to fluorinated glassy polymers is interpreted and quantitatively modeled considering the additional free volume created by incorporation of filler. That effect can be evaluated accurately from gas solubility data, using the NELF model. The solubility of CH4 and CO2 in matrices of Teflon AF1600 and AF2400, filled with variable amounts of fumed silica nanoparticles, was measured at 35 °C; the solubility of n-C4 and n-C5 vapors, as well as their diffusivity and the dilation induced in the same polymer matrices, was also measured at 25 °C. The fractional free volume (FFV)values, estimated on the basis of CH4 solubility data, were used to predict the solubility of the other penetrants inspected, with excellent agreement with experimental data. In addition, a single empirical correlation can be drawn, for both AF1600 and AF2400-based mixed matrices, between the infinite dilution diffusivity of vapors and the FFV value calculated from solubility data. Similarly, a simple correlation valid for both matrices is obtained as well for the dependence of diffusivity on penetrant concentration. Finally, use of the NELF model also allows an estimate of the swelling induced by the sorption process on the basis of virtually one simple data point of gas solubility.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Ferrari, M.C.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Galizia, M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name De Angelis, M.G.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Sarti, G.C.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/19B4qLUPHar29F4Dep9z0dOnQgnXz4am5/view?usp=drivesdk">https://drive.google.com/file/d/19B4qLUPHar29F4Dep9z0dOnQgnXz4am5/view?usp=drivesdk</a>
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-12319 25.06.2025 25.06.2025 Documentos solicitados