Avaliação por SAXS e DSC das interações entre H2O e Renex-100

Detalhes bibliográficos
Autor(a) principal: Campos,Daniella Dias Palombino de
Data de Publicação: 2012
Outros Autores: Cassu,Silvana Navarro, Garcia,Renata Batista Rivero, Queiroz,Hiure Anderson Alves da Silva, Gonçalves,Rene Francisco Boschi, Kawachi,Elizabete Yoshie
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000200023
Resumo: The aggregation behavior of the non-ionic surfactant Renex-100 in aqueous solutions and mesophases was evaluated by SAXS in a wide range of concentrations, between 20 and 30 °C. Complementary, water interactions were defined by DSC curves around 0°C. SAXS showed that the system undergoes the following phase transitions, from diluted to concentrated aqueous solutions: 1) isotropic solution of Renex aggregates; 2) hexagonal mesophase; 3) lamellar mesophase; and 4) isotropic solution. DSC analysis indicated the presence of interfacial water above 70wt%, which agreed with the segregation of free water to form the structural mesophases observed by SAXS bellow this concentration.
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spelling Avaliação por SAXS e DSC das interações entre H2O e Renex-100interfacial waternon-ionic surfactantmesophaseThe aggregation behavior of the non-ionic surfactant Renex-100 in aqueous solutions and mesophases was evaluated by SAXS in a wide range of concentrations, between 20 and 30 °C. Complementary, water interactions were defined by DSC curves around 0°C. SAXS showed that the system undergoes the following phase transitions, from diluted to concentrated aqueous solutions: 1) isotropic solution of Renex aggregates; 2) hexagonal mesophase; 3) lamellar mesophase; and 4) isotropic solution. DSC analysis indicated the presence of interfacial water above 70wt%, which agreed with the segregation of free water to form the structural mesophases observed by SAXS bellow this concentration.Sociedade Brasileira de Química2012-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000200023Química Nova v.35 n.2 2012reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422012000200023info:eu-repo/semantics/openAccessCampos,Daniella Dias Palombino deCassu,Silvana NavarroGarcia,Renata Batista RiveroQueiroz,Hiure Anderson Alves da SilvaGonçalves,Rene Francisco BoschiKawachi,Elizabete Yoshiepor2012-04-03T00:00:00Zoai:scielo:S0100-40422012000200023Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2012-04-03T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Avaliação por SAXS e DSC das interações entre H2O e Renex-100
title Avaliação por SAXS e DSC das interações entre H2O e Renex-100
spellingShingle Avaliação por SAXS e DSC das interações entre H2O e Renex-100
Campos,Daniella Dias Palombino de
interfacial water
non-ionic surfactant
mesophase
title_short Avaliação por SAXS e DSC das interações entre H2O e Renex-100
title_full Avaliação por SAXS e DSC das interações entre H2O e Renex-100
title_fullStr Avaliação por SAXS e DSC das interações entre H2O e Renex-100
title_full_unstemmed Avaliação por SAXS e DSC das interações entre H2O e Renex-100
title_sort Avaliação por SAXS e DSC das interações entre H2O e Renex-100
author Campos,Daniella Dias Palombino de
author_facet Campos,Daniella Dias Palombino de
Cassu,Silvana Navarro
Garcia,Renata Batista Rivero
Queiroz,Hiure Anderson Alves da Silva
Gonçalves,Rene Francisco Boschi
Kawachi,Elizabete Yoshie
author_role author
author2 Cassu,Silvana Navarro
Garcia,Renata Batista Rivero
Queiroz,Hiure Anderson Alves da Silva
Gonçalves,Rene Francisco Boschi
Kawachi,Elizabete Yoshie
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Campos,Daniella Dias Palombino de
Cassu,Silvana Navarro
Garcia,Renata Batista Rivero
Queiroz,Hiure Anderson Alves da Silva
Gonçalves,Rene Francisco Boschi
Kawachi,Elizabete Yoshie
dc.subject.por.fl_str_mv interfacial water
non-ionic surfactant
mesophase
topic interfacial water
non-ionic surfactant
mesophase
description The aggregation behavior of the non-ionic surfactant Renex-100 in aqueous solutions and mesophases was evaluated by SAXS in a wide range of concentrations, between 20 and 30 °C. Complementary, water interactions were defined by DSC curves around 0°C. SAXS showed that the system undergoes the following phase transitions, from diluted to concentrated aqueous solutions: 1) isotropic solution of Renex aggregates; 2) hexagonal mesophase; 3) lamellar mesophase; and 4) isotropic solution. DSC analysis indicated the presence of interfacial water above 70wt%, which agreed with the segregation of free water to form the structural mesophases observed by SAXS bellow this concentration.
publishDate 2012
dc.date.none.fl_str_mv 2012-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000200023
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000200023
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422012000200023
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.35 n.2 2012
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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