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A critical assessment of the flory-huggins (FH) theory to predict aqueous two-phase behaviour

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Show simple item record Bussamra, Bianca Consorti Sietaram, Devi Verheijen, Peter Mussatto, Solange I. da Costa, Aline Carvalho van der Wielen, Luuk A.M. Ottens, Marcel 2020-09-21T12:39:59Z 2020-09-21T12:39:59Z 2020
dc.description peer-reviewed en_US
dc.description.abstract This article provides an analysis on published models used to calculate phase separation in aqueous two-phase systems(ATPS)based on Flory-Huggins(FH) theory, in terms of problem formulation and mathematical solving algorithm. An integrated algorithm is presented, showing different mathematical approaches of using the FH theory.The algorithm involves the estimation of interchange energy,and the calculation of phase compositions. Based on experimental data the thermodynamic model can provide a useful framework to perform a sensitivity analysis on parameters, in order to understand the influence of salt type, polymer molecular mass, and ionic strength on phase separation. However, this model, restricted to entropic and enthalpicterms,cannot quantitative lydescribe the data.This occurs mainly because of the strong influence of random experimental errors on the estimation of interchange energy and FH not being an exact description of phase separation in salt based ATPS.After providing a literature overview and mathematical analysis,we bring to the field th application of the FH theory for selecting ATPS and its limitations. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation BEPE2016/21951-1 en_US
dc.relation.ispartofseries Separation and Purification Technology;255, 117636
dc.subject Flory-Huggins en_US
dc.subject Interchange energy estimation en_US
dc.title A critical assessment of the flory-huggins (FH) theory to predict aqueous two-phase behaviour en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1016/j.seppur.2020.117636
dc.contributor.sponsor Foundation for Research of State of Sao Paulo en_US
dc.relation.projectid 2015/20630-4 en_US
dc.relation.projectid 2016/04749-4 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

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