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An approach for evaluating gas sorption in polymer matrix membranes based on balancing incoming and outgoing membrane mass fluxes
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SYSNO ASEP 0560987 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title An approach for evaluating gas sorption in polymer matrix membranes based on balancing incoming and outgoing membrane mass fluxes Author(s) Setničková, Kateřina (UCHP-M) RID, ORCID, SAI
Jiřiště, Lukáš (UCHP-M)
Malý, M. (CZ)
Petričkovič, Roman (UCHP-M) RID, SAI
Tseng, H.-H. (TW)
Uchytil, Petr (UCHP-M) RID, SAIArticle number 120867 Source Title Journal of Membrane Science. - : Elsevier - ISSN 0376-7388
Roč. 661, NOV 5 (2022)Number of pages 13 s. Language eng - English Country NL - Netherlands Keywords permeation cell ; gas transport ; polymeric membrane OECD category Chemical process engineering R&D Projects GC19-23760J GA ČR - Czech Science Foundation (CSF) Method of publishing Open access with time embargo (06.11.2024) Institutional support UCHP-M - RVO:67985858 UT WOS 000883338200004 EID SCOPUS 85136309097 DOI 10.1016/j.memsci.2022.120867 Annotation The transport of gases in polymeric membranes can be described by a solution–diffusion mechanism in which the individual transport parameters are determined from independent measurements of the gas permeability and diffusivity and further measurements of the gas solubility in the polymer of interest. Herein, we propose a new method for determining all three transport parameters from a single permeation experiment performed using a modified classical permeation cell with very small volumes above and below the membrane (1.192 and 0.658 mL, respectively). The new concept is based on the evaluation of gas sorption in the membrane determined from the balance of mass fluxes entering and leaving the membrane. The amount of gas sorbed in the membrane can then be calculated by integrating the area between the fluxes. This arrangement allows for the rapid and complex characterization of the gas transport and separation properties of polymeric materials using a single experiment. The novel approach was tested on a polydimethylsiloxane membrane for three gases having considerably different solubilities in the polymer, and the results were consistent with those obtained using classical procedures. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2023 Electronic address https://hdl.handle.net/11104/0333748
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