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A New Prediction Method for Organic Liquids Sorption into Polymers
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SYSNO ASEP 0438131 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A New Prediction Method for Organic Liquids Sorption into Polymers Author(s) Randová, A. (CZ)
Bartovská, L. (CZ)
Izák, Pavel (UCHP-M) RID, ORCID, SAI
Friess, K. (CZ)Source Title Journal of Membrane Science. - : Elsevier - ISSN 0376-7388
Roč. 475, FEB 1 (2015), s. 545-551Number of pages 7 s. Language eng - English Country NL - Netherlands Keywords organic liquids ; liquid non-solvents ; polymers Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects GAP106/12/0569 GA ČR - Czech Science Foundation (CSF) LD14094 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UCHP-M - RVO:67985858 UT WOS 000345982100056 EID SCOPUS 84913570659 DOI 10.1016/j.memsci.2014.11.006 Annotation A new prediction method for sorption of low molecular organic liquids (non solvents) in polymers is presented. It was derived from the gravimetric data for sorption of linear and cyclic alkanes, aromatics and alcohols into various kinds of polymers (glassy polystyrene, robbery polyclimeLhylsiloxane, sernicrystalline low-density polyethylene, ion exchange Nation, and copolyrneric poly(styrene-butadiene-styrene) in temperature range 5-50 degrees C. Our method is based on a normalised function phi Q(t) evaluated from series of the equilibrium mass swelling degrees Q(m) of a model liquid in one polymer at each temperature from the indicated temperature interval to the corresponding (2, at the highest temperature of this interval. A knowledge of the proper function 5,0(t) for given polymer enables to predict a sorption of any other liquid with the same properties or interactions with given polymer in given temperature range just from a knowledge of a single experimental Q(m) value at any temperature horn the indicated temperature interval. The steepest temperature dependent normalised function phi Q(t) exhibited LOPE+ liquid systems. Contrarily, POEMS +liquid systems were practically temperature independent. The thermodynamic analysis of the sorption process in studied polymer-liquid systems comprised evaluation of the appropriate values of the sorption enthalpy Delta H-s and the sorption entropy The values of the resulting Gibbs energy of sorption Delta(s)G were negative in all cases and thus confirmed the spontaneity of liquids sorption in polymers over the whole temperature range. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2017
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