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A New Prediction Method for Organic Liquids Sorption into Polymers
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SYSNO ASEP 0438131 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název A New Prediction Method for Organic Liquids Sorption into Polymers Tvůrce(i) Randová, A. (CZ)
Bartovská, L. (CZ)
Izák, Pavel (UCHP-M) RID, ORCID, SAI
Friess, K. (CZ)Zdroj.dok. Journal of Membrane Science. - : Elsevier - ISSN 0376-7388
Roč. 475, FEB 1 (2015), s. 545-551Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova organic liquids ; liquid non-solvents ; polymers Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství CEP GAP106/12/0569 GA ČR - Grantová agentura ČR LD14094 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000345982100056 EID SCOPUS 84913570659 DOI 10.1016/j.memsci.2014.11.006 Anotace 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. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2017
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