A new modified Wilson equation for the calculation of vapor–liquid equilibrium of aqueous polymer solutions

Detalhes bibliográficos
Autor(a) principal: Xin Xu
Data de Publicação: 2003
Outros Autores: Madeira, Pedro, Teixeira, J. A., Macedo, Eugénia
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/1856
Resumo: A local composition model based on the lattice theory and two-fluid theory, considering the excess heat capacity, which is a modified Wilson equation, is developed for the excess Gibbs energy of aqueous polymer solutions. The model represents a synergistic combination of the excess entropy for mixing molecules of different sizes and the temperature dependent residual contribution, which combines the attractive interactions between solvent molecules and the segments with the contribution of the excess heat capacity. The results of the extrapolation with respect to molecular weight of phase equilibrium in aqueous polymer solutions with this model are very satisfactory, with only two adjustable parameters.
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spelling A new modified Wilson equation for the calculation of vapor–liquid equilibrium of aqueous polymer solutionsModelActivityLocal compositionWilsonPolymer solutionsVapor–liquid equilibriumExcess Gibbs energyAqueous two-phase systemsScience & TechnologyA local composition model based on the lattice theory and two-fluid theory, considering the excess heat capacity, which is a modified Wilson equation, is developed for the excess Gibbs energy of aqueous polymer solutions. The model represents a synergistic combination of the excess entropy for mixing molecules of different sizes and the temperature dependent residual contribution, which combines the attractive interactions between solvent molecules and the segments with the contribution of the excess heat capacity. The results of the extrapolation with respect to molecular weight of phase equilibrium in aqueous polymer solutions with this model are very satisfactory, with only two adjustable parameters.Fundação para a Ciência e a Tecnologia (FCT) – postdoctoral fellowship, Programa Operacional “Ciência, Tecnologia, Inovação” POCTI/1999/EQU/33185.ElsevierUniversidade do MinhoXin XuMadeira, PedroTeixeira, J. A.Macedo, Eugénia20032003-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/1856eng“Fluid phase equilibria”. ISSN 0378-3812. 213:1-2 (2003) 53-63.0378-381210.1016/S0378-3812(03)00185-7info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T11:55:22Zoai:repositorium.sdum.uminho.pt:1822/1856Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:44:54.979366Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv A new modified Wilson equation for the calculation of vapor–liquid equilibrium of aqueous polymer solutions
title A new modified Wilson equation for the calculation of vapor–liquid equilibrium of aqueous polymer solutions
spellingShingle A new modified Wilson equation for the calculation of vapor–liquid equilibrium of aqueous polymer solutions
Xin Xu
Model
Activity
Local composition
Wilson
Polymer solutions
Vapor–liquid equilibrium
Excess Gibbs energy
Aqueous two-phase systems
Science & Technology
title_short A new modified Wilson equation for the calculation of vapor–liquid equilibrium of aqueous polymer solutions
title_full A new modified Wilson equation for the calculation of vapor–liquid equilibrium of aqueous polymer solutions
title_fullStr A new modified Wilson equation for the calculation of vapor–liquid equilibrium of aqueous polymer solutions
title_full_unstemmed A new modified Wilson equation for the calculation of vapor–liquid equilibrium of aqueous polymer solutions
title_sort A new modified Wilson equation for the calculation of vapor–liquid equilibrium of aqueous polymer solutions
author Xin Xu
author_facet Xin Xu
Madeira, Pedro
Teixeira, J. A.
Macedo, Eugénia
author_role author
author2 Madeira, Pedro
Teixeira, J. A.
Macedo, Eugénia
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Xin Xu
Madeira, Pedro
Teixeira, J. A.
Macedo, Eugénia
dc.subject.por.fl_str_mv Model
Activity
Local composition
Wilson
Polymer solutions
Vapor–liquid equilibrium
Excess Gibbs energy
Aqueous two-phase systems
Science & Technology
topic Model
Activity
Local composition
Wilson
Polymer solutions
Vapor–liquid equilibrium
Excess Gibbs energy
Aqueous two-phase systems
Science & Technology
description A local composition model based on the lattice theory and two-fluid theory, considering the excess heat capacity, which is a modified Wilson equation, is developed for the excess Gibbs energy of aqueous polymer solutions. The model represents a synergistic combination of the excess entropy for mixing molecules of different sizes and the temperature dependent residual contribution, which combines the attractive interactions between solvent molecules and the segments with the contribution of the excess heat capacity. The results of the extrapolation with respect to molecular weight of phase equilibrium in aqueous polymer solutions with this model are very satisfactory, with only two adjustable parameters.
publishDate 2003
dc.date.none.fl_str_mv 2003
2003-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/1856
url http://hdl.handle.net/1822/1856
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv “Fluid phase equilibria”. ISSN 0378-3812. 213:1-2 (2003) 53-63.
0378-3812
10.1016/S0378-3812(03)00185-7
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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