Phase Diagrams of the Aqueous Two-Phase Systems of Poly(ethylene glycol)/Sodium Polyacrylate/Salts

Detalhes bibliográficos
Autor(a) principal: Johansson, Hans-Olof
Data de Publicação: 2011
Outros Autores: Feitosa, Eloi [UNESP], Pessoa Junior, Adalberto
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3390/polym3010587
http://hdl.handle.net/11449/22096
Resumo: Aqueous two-phase systems consisting of polyethylene glycol (PEG), sodium polyacrylate (NaPAA), and a salt have been studied. The effects of the polymer size, salt type (NaCl, Na2SO4, sodium adipate and sodium azelate) and salt concentrations on the position of the binodal curve were investigated. The investigated PEG molecules had a molar mass of 2,000 to 8,000 g/mol, while that of NaPAA was 8,000 g/mol. Experimental phase diagrams, and tie lines and calculated phase diagrams, based on Flory-Huggins theory of polymer solutions are presented. Due to strong enthalpic and entropic balancing forces, the hydrophobicity of the added salt has a strong influence on the position of the binodal, which could be reproduced by model calculations.
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spelling Phase Diagrams of the Aqueous Two-Phase Systems of Poly(ethylene glycol)/Sodium Polyacrylate/SaltsPolyethylene glycolsodium polyacrylateATPSFlory-Huggins theoryPhase diagramhydrophobic ionsAqueous two-phase systems consisting of polyethylene glycol (PEG), sodium polyacrylate (NaPAA), and a salt have been studied. The effects of the polymer size, salt type (NaCl, Na2SO4, sodium adipate and sodium azelate) and salt concentrations on the position of the binodal curve were investigated. The investigated PEG molecules had a molar mass of 2,000 to 8,000 g/mol, while that of NaPAA was 8,000 g/mol. Experimental phase diagrams, and tie lines and calculated phase diagrams, based on Flory-Huggins theory of polymer solutions are presented. Due to strong enthalpic and entropic balancing forces, the hydrophobicity of the added salt has a strong influence on the position of the binodal, which could be reproduced by model calculations.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Lund Univ, Dept Biochem & Struct Biol, SE-22100 Lund, SwedenSão Paulo State Univ, Dept Phys, UNESP, IBILCE, BR-15054000 Sao Jose do Rio Preto, BrazilUniv São Paulo, Dept Biochem & Pharmaceut Technol, BR-05508000 São Paulo, BrazilSão Paulo State Univ, Dept Phys, UNESP, IBILCE, BR-15054000 Sao Jose do Rio Preto, BrazilCNPq: 304543/2006-3Mdpi AgLund UnivUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Johansson, Hans-OlofFeitosa, Eloi [UNESP]Pessoa Junior, Adalberto2014-05-20T14:02:40Z2014-05-20T14:02:40Z2011-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article587-601application/pdfhttp://dx.doi.org/10.3390/polym3010587Polymers. Basel: Mdpi Ag, v. 3, n. 1, p. 587-601, 2011.2073-4360http://hdl.handle.net/11449/2209610.3390/polym3010587WOS:000208601400032WOS000208601400032.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPolymers2.9350,852info:eu-repo/semantics/openAccess2023-10-10T06:02:46Zoai:repositorio.unesp.br:11449/22096Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:29:53.713485Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Phase Diagrams of the Aqueous Two-Phase Systems of Poly(ethylene glycol)/Sodium Polyacrylate/Salts
title Phase Diagrams of the Aqueous Two-Phase Systems of Poly(ethylene glycol)/Sodium Polyacrylate/Salts
spellingShingle Phase Diagrams of the Aqueous Two-Phase Systems of Poly(ethylene glycol)/Sodium Polyacrylate/Salts
Johansson, Hans-Olof
Polyethylene glycol
sodium polyacrylate
ATPS
Flory-Huggins theory
Phase diagram
hydrophobic ions
title_short Phase Diagrams of the Aqueous Two-Phase Systems of Poly(ethylene glycol)/Sodium Polyacrylate/Salts
title_full Phase Diagrams of the Aqueous Two-Phase Systems of Poly(ethylene glycol)/Sodium Polyacrylate/Salts
title_fullStr Phase Diagrams of the Aqueous Two-Phase Systems of Poly(ethylene glycol)/Sodium Polyacrylate/Salts
title_full_unstemmed Phase Diagrams of the Aqueous Two-Phase Systems of Poly(ethylene glycol)/Sodium Polyacrylate/Salts
title_sort Phase Diagrams of the Aqueous Two-Phase Systems of Poly(ethylene glycol)/Sodium Polyacrylate/Salts
author Johansson, Hans-Olof
author_facet Johansson, Hans-Olof
Feitosa, Eloi [UNESP]
Pessoa Junior, Adalberto
author_role author
author2 Feitosa, Eloi [UNESP]
Pessoa Junior, Adalberto
author2_role author
author
dc.contributor.none.fl_str_mv Lund Univ
Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
dc.contributor.author.fl_str_mv Johansson, Hans-Olof
Feitosa, Eloi [UNESP]
Pessoa Junior, Adalberto
dc.subject.por.fl_str_mv Polyethylene glycol
sodium polyacrylate
ATPS
Flory-Huggins theory
Phase diagram
hydrophobic ions
topic Polyethylene glycol
sodium polyacrylate
ATPS
Flory-Huggins theory
Phase diagram
hydrophobic ions
description Aqueous two-phase systems consisting of polyethylene glycol (PEG), sodium polyacrylate (NaPAA), and a salt have been studied. The effects of the polymer size, salt type (NaCl, Na2SO4, sodium adipate and sodium azelate) and salt concentrations on the position of the binodal curve were investigated. The investigated PEG molecules had a molar mass of 2,000 to 8,000 g/mol, while that of NaPAA was 8,000 g/mol. Experimental phase diagrams, and tie lines and calculated phase diagrams, based on Flory-Huggins theory of polymer solutions are presented. Due to strong enthalpic and entropic balancing forces, the hydrophobicity of the added salt has a strong influence on the position of the binodal, which could be reproduced by model calculations.
publishDate 2011
dc.date.none.fl_str_mv 2011-03-01
2014-05-20T14:02:40Z
2014-05-20T14:02:40Z
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://dx.doi.org/10.3390/polym3010587
Polymers. Basel: Mdpi Ag, v. 3, n. 1, p. 587-601, 2011.
2073-4360
http://hdl.handle.net/11449/22096
10.3390/polym3010587
WOS:000208601400032
WOS000208601400032.pdf
url http://dx.doi.org/10.3390/polym3010587
http://hdl.handle.net/11449/22096
identifier_str_mv Polymers. Basel: Mdpi Ag, v. 3, n. 1, p. 587-601, 2011.
2073-4360
10.3390/polym3010587
WOS:000208601400032
WOS000208601400032.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Polymers
2.935
0,852
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 587-601
application/pdf
dc.publisher.none.fl_str_mv Mdpi Ag
publisher.none.fl_str_mv Mdpi Ag
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128368814587904

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