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Vapor-liquid and liquid-liquid equilibria in the water + poly(propyleneglycol) system.
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SYSNO ASEP 0542742 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Vapor-liquid and liquid-liquid equilibria in the water + poly(propyleneglycol) system. Author(s) Pavlíček, Jan (UCHP-M) RID, SAI
Rotrekl, Jan (UCHP-M) RID, ORCID, SAI
Bogdanić, Grozdana (UCHP-M) RID, ORCID, SAI
Wichterle, Ivan (UCHP-M) RID, ORCID, SAI
Izák, Pavel (UCHP-M) RID, ORCID, SAIArticle number 116336 Source Title Journal of Molecular Liquids. - : Elsevier - ISSN 0167-7322
Roč. 337, SEP 1 (2021)Number of pages 6 s. Language eng - English Country NL - Netherlands Keywords vapor–liquid equilibrium ; liquid–liquid equilibrium ; polymer–solvent system Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry R&D Projects GA18-05484S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access with time embargo (02.09.2023) Institutional support UCHP-M - RVO:67985858 UT WOS 000681039600019 EID SCOPUS 85107762059 DOI 10.1016/j.molliq.2021.116336 Annotation The aim of this study was to investigate phase equilibria in a water +poly(propylene glycol) [Mn = 425g mol-1] system. Vapor-liquid equilibria (VLE) were determined ebulliometrically in the completely miscible region with higher water concentrations at isotherms 323.15, 333.15, 343.15, and 353.15 K. These data were correlated with the UNIQUAC free-volume (FV) model to be consistent with our previous studies. Liquid-liquid equilibrium (LLE) was determined using the cloud-point method at 320–350 K, and lower critical solution temperature was found at 320.2 K. LLE was correlated with the entropic FVUNIQUAC segmental interaction model developed earlier, which is suited for correlation and calculation of LLE of polymer solutions. We estimated new binary segmental interaction parameters for interactions between propylene glycol and water segments. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2022 Electronic address http://hdl.handle.net/11104/0321385
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