Effective charges and zeta potentials of oil in water microemulsions in the presence of Hofmeister salts

Detalhes bibliográficos
Autor(a) principal: Santos, Alexandre Pereira dos
Data de Publicação: 2018
Outros Autores: Levin, Yan
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/198443
Resumo: We present a theory which allows us to calculate the effective charge and zeta potential of oil droplets in microemulsions containing Hofmeister salts. A modified Poisson-Boltzmann equation is used to account for the surface and ion polarizations and hydrophobic and dispersion interactions. The ions are classified as kosmotropes and chaotropes according to their Jones-Dole viscosity B coeffi- cient. Kosmotropes stay hydrated and do not enter into the oil phase, while chaotropes can adsorb to the oil-water interface. The effective interaction potentials between ions and oil-water interface are parametrized so as to accurately account for the excess interfacial tension.
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spelling Santos, Alexandre Pereira dosLevin, Yan2019-08-28T02:34:10Z20180021-9606http://hdl.handle.net/10183/198443001098492We present a theory which allows us to calculate the effective charge and zeta potential of oil droplets in microemulsions containing Hofmeister salts. A modified Poisson-Boltzmann equation is used to account for the surface and ion polarizations and hydrophobic and dispersion interactions. The ions are classified as kosmotropes and chaotropes according to their Jones-Dole viscosity B coeffi- cient. Kosmotropes stay hydrated and do not enter into the oil phase, while chaotropes can adsorb to the oil-water interface. The effective interaction potentials between ions and oil-water interface are parametrized so as to accurately account for the excess interfacial tension.application/pdfengThe journal of chemical physics. New York. Vol. 148, no. 22 (June 2018), 222817, 5 p.Equação de Poisson-BoltzmannMicroemulsãoÍonsHidrofobicidadeEffective charges and zeta potentials of oil in water microemulsions in the presence of Hofmeister saltsEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001098492.pdf.txt001098492.pdf.txtExtracted Texttext/plain22454http://www.lume.ufrgs.br/bitstream/10183/198443/2/001098492.pdf.txt08f16463ac851559011db13385882d3fMD52ORIGINAL001098492.pdfTexto completo (inglês)application/pdf1244464http://www.lume.ufrgs.br/bitstream/10183/198443/1/001098492.pdf488f4ed039b435b7a18b8b08e0f0939fMD5110183/1984432023-06-08 03:33:01.949652oai:www.lume.ufrgs.br:10183/198443Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-06-08T06:33:01Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Effective charges and zeta potentials of oil in water microemulsions in the presence of Hofmeister salts
title Effective charges and zeta potentials of oil in water microemulsions in the presence of Hofmeister salts
spellingShingle Effective charges and zeta potentials of oil in water microemulsions in the presence of Hofmeister salts
Santos, Alexandre Pereira dos
Equação de Poisson-Boltzmann
Microemulsão
Íons
Hidrofobicidade
title_short Effective charges and zeta potentials of oil in water microemulsions in the presence of Hofmeister salts
title_full Effective charges and zeta potentials of oil in water microemulsions in the presence of Hofmeister salts
title_fullStr Effective charges and zeta potentials of oil in water microemulsions in the presence of Hofmeister salts
title_full_unstemmed Effective charges and zeta potentials of oil in water microemulsions in the presence of Hofmeister salts
title_sort Effective charges and zeta potentials of oil in water microemulsions in the presence of Hofmeister salts
author Santos, Alexandre Pereira dos
author_facet Santos, Alexandre Pereira dos
Levin, Yan
author_role author
author2 Levin, Yan
author2_role author
dc.contributor.author.fl_str_mv Santos, Alexandre Pereira dos
Levin, Yan
dc.subject.por.fl_str_mv Equação de Poisson-Boltzmann
Microemulsão
Íons
Hidrofobicidade
topic Equação de Poisson-Boltzmann
Microemulsão
Íons
Hidrofobicidade
description We present a theory which allows us to calculate the effective charge and zeta potential of oil droplets in microemulsions containing Hofmeister salts. A modified Poisson-Boltzmann equation is used to account for the surface and ion polarizations and hydrophobic and dispersion interactions. The ions are classified as kosmotropes and chaotropes according to their Jones-Dole viscosity B coeffi- cient. Kosmotropes stay hydrated and do not enter into the oil phase, while chaotropes can adsorb to the oil-water interface. The effective interaction potentials between ions and oil-water interface are parametrized so as to accurately account for the excess interfacial tension.
publishDate 2018
dc.date.issued.fl_str_mv 2018
dc.date.accessioned.fl_str_mv 2019-08-28T02:34:10Z
dc.type.driver.fl_str_mv Estrangeiro
info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/198443
dc.identifier.issn.pt_BR.fl_str_mv 0021-9606
dc.identifier.nrb.pt_BR.fl_str_mv 001098492
identifier_str_mv 0021-9606
001098492
url http://hdl.handle.net/10183/198443
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv The journal of chemical physics. New York. Vol. 148, no. 22 (June 2018), 222817, 5 p.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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instname:Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
instacron_str UFRGS
institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
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