Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/111832
DC FieldValueLanguage
dc.contributor.authorAlves, Mariana B.-
dc.contributor.authorLopes, André M.-
dc.contributor.authorSantos, Nathalia A.-
dc.contributor.authorSantos-Ebinuma, Valéria C.-
dc.contributor.authorVicente, Filipa A.-
dc.contributor.authorPereira, Jorge F. B.-
dc.date.accessioned2024-01-11T13:15:29Z-
dc.date.available2024-01-11T13:15:29Z-
dc.date.issued2023-
dc.identifier.issn2297-8739pt
dc.identifier.urihttps://hdl.handle.net/10316/111832-
dc.description.abstractA series of polymeric aqueous biphasic systems (ABS) were determined using polyethylene glycol (PEG) and sodium polyacrylate (NaPA) with choline chloride ([Ch]Cl) as an adjuvant. The effect of (i) PEG and NaPA molecular weights, (ii) PEG functionalization, (iii) [Ch]Cl addition (at different concentrations), and (iv) temperature (25, 37 and 50 C) was evaluated through their ability to promote the two-phase separation. The results showed that the polymerization degree and functionalization of PEG polymers exhibit a large influence on the ABS formation, with high molecular weight PEG inducing an increase in the biphasic region. Furthermore, the addition of small amount (1–5 wt%) of [Ch]Cl also increased the liquid–liquid demixing. Temperature and the increase in the NaPA molecular weight did not influence the ABS formation ability. Finally, the partition performance of PEG/NaPA + [Ch]Cl ABS was evaluated using caffeine as a model compound. Unlike the ABS formation trend, NaPAs molecular weight significantly influenced the partitioning, which was strengthened when using NaPA-8000. Moreover, the incorporation of [Ch]Cl facilitated an inversion in the partitioning behavior of caffeine, thereby emphasizing the remarkable partitioning tailoring potential exhibited by these systems. Overall, all systems seem to be promising alternatives for the effective extraction, purification and/or concentration of different value-added biomolecules.pt
dc.language.isoengpt
dc.publisherMDPIpt
dc.relationUIDB/00102/2020pt
dc.relationUIDP/00102/2020pt
dc.rightsopenAccesspt
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt
dc.subjectaqueous two-phase systemspt
dc.subjectcholine chloridept
dc.subjectpolyethylene glycolpt
dc.subjectsodium polyacrylatept
dc.subjectcaffeinept
dc.titleInfluence of Choline Chloride on the Phase Equilibria and Partition Performance of Polymer/Polymer Aqueous Biphasic Systemspt
dc.typearticle-
degois.publication.firstPage528pt
degois.publication.issue10pt
degois.publication.titleSeparationspt
dc.peerreviewedyespt
dc.identifier.doi10.3390/separations10100528pt
degois.publication.volume10pt
dc.date.embargo2023-01-01*
uc.date.periodoEmbargo0pt
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextCom Texto completo-
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
crisitem.author.researchunitCIEPQPF – Chemical Process Engineering and Forest Products Research Centre-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.orcid0000-0001-5959-0015-
crisitem.project.grantnoCIEPQPF- Chemical Engineering and Renewable Resources for Sustainability-
crisitem.project.grantnoCERES - Chemical Engineering and Renewable Resources for Sustainability-
Appears in Collections:I&D CERES - Artigos em Revistas Internacionais
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This item is licensed under a Creative Commons License Creative Commons