Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters

Detalhes bibliográficos
Autor(a) principal: Araújo, Alessandro Alisson de Lemos
Data de Publicação: 2015
Outros Autores: Barros Neto, Eduardo Lins de, Chiavone-Filho, Osvaldo, Foletto, Edson Luiz
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/45015
Resumo: In this study, the influence of NaCl on the cloud point of polyethoxylate nonylphenol polyethoxylates (NPEOn ) was investigated. Liquid-liquid surfactants from the family of lauryl alcohol polyethoxylates (C12EOn) and equilibrium curves of the aforementioned aqueous surfactants system with the presence of NaCl were plotted and thermodynamic parameters based on the Flory-Huggins model were obtained. The visual method was used to determine the cloud point. Solutions containing surfactant concentrations between 0.5 and 20% (by weight) and NaCl between 4.9 and 12.1% (by weight) were prepared. Salt had a salting-out effect, decreasing surfactant solubility in water. Furthermore, the cloud point decreased with an increase of NaCl concentration. The Flory-Huggins model satisfactorily described the experimental data for all surfactant + NaCl aqueous mixtures studied
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spelling Araújo, Alessandro Alisson de LemosBarros Neto, Eduardo Lins deChiavone-Filho, OsvaldoFoletto, Edson Luiz2021-11-24T20:23:56Z2021-11-24T20:23:56Z2015-04-05ARAÚJO, Alessandro Alisson de Lemos; BARROS NETO, Eduardo Lins de; CHIAVONE-FILHO, Osvaldo; FOLETTO, Edson Luiz. Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters. Revista Facultad de Ingeniería Universidad de Antioquia, [S.L.], n. 75, p. 1-2, abr. 2015. Disponível em: https://revistas.udea.edu.co/index.php/ingenieria/article/view/20078. Acesso em: 02 jul. 2021. https://doi.org/10.17533/udea.redin.n75a152422-28440120-6230https://repositorio.ufrn.br/handle/123456789/4501510.17533/udea.redin.n75a15In this study, the influence of NaCl on the cloud point of polyethoxylate nonylphenol polyethoxylates (NPEOn ) was investigated. Liquid-liquid surfactants from the family of lauryl alcohol polyethoxylates (C12EOn) and equilibrium curves of the aforementioned aqueous surfactants system with the presence of NaCl were plotted and thermodynamic parameters based on the Flory-Huggins model were obtained. The visual method was used to determine the cloud point. Solutions containing surfactant concentrations between 0.5 and 20% (by weight) and NaCl between 4.9 and 12.1% (by weight) were prepared. Salt had a salting-out effect, decreasing surfactant solubility in water. Furthermore, the cloud point decreased with an increase of NaCl concentration. The Flory-Huggins model satisfactorily described the experimental data for all surfactant + NaCl aqueous mixtures studiedEste estudio investigó la influencia de NaCl sobre el punto de niebla de los tensioactivos polietoxilados de la familia de polietoxilatos de alcohol laurílico y polietoxilatos de nonilfenol. Se representaron gráficamente las curvas de equilibrio líquido-líquido de los sistemas acuosos con tensioactivos anteriormente mencionados con presencia de NaCl, surgiendo los parámetros termodinámicos basados en el modelo de Flory-Huggins. El uso del método visual determinó el punto de niebla. Se prepararon soluciones con concentraciones de surfactante entre 0,5 y 20% (por peso) y NaCl entre 4,9 y 12,1% (por peso). La sal tenía un efecto salino, disminuyendo la solubilidad surfactante en agua. Además, el punto de niebla disminuyó al aumentar la concentración de NaCl. El modelo de Flory-Huggins describió satisfactoriamente los datos experimentales para todas las soluciones de misturas acuosas + NaCl estudiadasUniversidad de AntioquiaAttribution-NonCommercial-ShareAlike 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-sa/3.0/br/info:eu-repo/semantics/openAccessNonionic surfactantCloud pointNaClFlory-Huggins modelInfluence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parametersInfluencia de cloruro de sodio en el punto de niebla de tensioactivos polietoxilados y estimación de los parámetros del modelo de Flory-Hugginsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-81037https://repositorio.ufrn.br/bitstream/123456789/45015/2/license_rdf996f8b5afe3136b76594f43bfda24c5eMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/45015/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53ORIGINALInfluenceOfSodiumChlorideOnTheCloudPoint_BARROSNETO_2015.pdfInfluenceOfSodiumChlorideOnTheCloudPoint_BARROSNETO_2015.pdfArtigoapplication/pdf1143054https://repositorio.ufrn.br/bitstream/123456789/45015/1/InfluenceOfSodiumChlorideOnTheCloudPoint_BARROSNETO_2015.pdf8cfcc8c87612ff3e0874e9ae14b361faMD51123456789/450152021-11-24 17:23:56.956oai:https://repositorio.ufrn.br:123456789/45015Tk9OLUVYQ0xVU0lWRSBESVNUUklCVVRJT04gTElDRU5TRQoKCkJ5IHNpZ25pbmcgYW5kIGRlbGl2ZXJpbmcgdGhpcyBsaWNlbnNlLCBNci4gKGF1dGhvciBvciBjb3B5cmlnaHQgaG9sZGVyKToKCgphKSBHcmFudHMgdGhlIFVuaXZlcnNpZGFkZSBGZWRlcmFsIFJpbyBHcmFuZGUgZG8gTm9ydGUgdGhlIG5vbi1leGNsdXNpdmUgcmlnaHQgb2YKcmVwcm9kdWNlLCBjb252ZXJ0IChhcyBkZWZpbmVkIGJlbG93KSwgY29tbXVuaWNhdGUgYW5kIC8gb3IKZGlzdHJpYnV0ZSB0aGUgZGVsaXZlcmVkIGRvY3VtZW50IChpbmNsdWRpbmcgYWJzdHJhY3QgLyBhYnN0cmFjdCkgaW4KZGlnaXRhbCBvciBwcmludGVkIGZvcm1hdCBhbmQgaW4gYW55IG1lZGl1bS4KCmIpIERlY2xhcmVzIHRoYXQgdGhlIGRvY3VtZW50IHN1Ym1pdHRlZCBpcyBpdHMgb3JpZ2luYWwgd29yaywgYW5kIHRoYXQKeW91IGhhdmUgdGhlIHJpZ2h0IHRvIGdyYW50IHRoZSByaWdodHMgY29udGFpbmVkIGluIHRoaXMgbGljZW5zZS4gRGVjbGFyZXMKdGhhdCB0aGUgZGVsaXZlcnkgb2YgdGhlIGRvY3VtZW50IGRvZXMgbm90IGluZnJpbmdlLCBhcyBmYXIgYXMgaXQgaXMKdGhlIHJpZ2h0cyBvZiBhbnkgb3RoZXIgcGVyc29uIG9yIGVudGl0eS4KCmMpIElmIHRoZSBkb2N1bWVudCBkZWxpdmVyZWQgY29udGFpbnMgbWF0ZXJpYWwgd2hpY2ggZG9lcyBub3QKcmlnaHRzLCBkZWNsYXJlcyB0aGF0IGl0IGhhcyBvYnRhaW5lZCBhdXRob3JpemF0aW9uIGZyb20gdGhlIGhvbGRlciBvZiB0aGUKY29weXJpZ2h0IHRvIGdyYW50IHRoZSBVbml2ZXJzaWRhZGUgRmVkZXJhbCBkbyBSaW8gR3JhbmRlIGRvIE5vcnRlIHRoZSByaWdodHMgcmVxdWlyZWQgYnkgdGhpcyBsaWNlbnNlLCBhbmQgdGhhdCB0aGlzIG1hdGVyaWFsIHdob3NlIHJpZ2h0cyBhcmUgb2YKdGhpcmQgcGFydGllcyBpcyBjbGVhcmx5IGlkZW50aWZpZWQgYW5kIHJlY29nbml6ZWQgaW4gdGhlIHRleHQgb3IKY29udGVudCBvZiB0aGUgZG9jdW1lbnQgZGVsaXZlcmVkLgoKSWYgdGhlIGRvY3VtZW50IHN1Ym1pdHRlZCBpcyBiYXNlZCBvbiBmdW5kZWQgb3Igc3VwcG9ydGVkIHdvcmsKYnkgYW5vdGhlciBpbnN0aXR1dGlvbiBvdGhlciB0aGFuIHRoZSBVbml2ZXJzaWRhZGUgRmVkZXJhbCBkbyBSaW8gR3JhbmRlIGRvIE5vcnRlLCBkZWNsYXJlcyB0aGF0IGl0IGhhcyBmdWxmaWxsZWQgYW55IG9ibGlnYXRpb25zIHJlcXVpcmVkIGJ5IHRoZSByZXNwZWN0aXZlIGFncmVlbWVudCBvciBhZ3JlZW1lbnQuCgpUaGUgVW5pdmVyc2lkYWRlIEZlZGVyYWwgZG8gUmlvIEdyYW5kZSBkbyBOb3J0ZSB3aWxsIGNsZWFybHkgaWRlbnRpZnkgaXRzIG5hbWUgKHMpIGFzIHRoZSBhdXRob3IgKHMpIG9yIGhvbGRlciAocykgb2YgdGhlIGRvY3VtZW50J3MgcmlnaHRzCmRlbGl2ZXJlZCwgYW5kIHdpbGwgbm90IG1ha2UgYW55IGNoYW5nZXMsIG90aGVyIHRoYW4gdGhvc2UgcGVybWl0dGVkIGJ5CnRoaXMgbGljZW5zZQo=Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2021-11-24T20:23:56Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters
dc.title.alternative.pt_BR.fl_str_mv Influencia de cloruro de sodio en el punto de niebla de tensioactivos polietoxilados y estimación de los parámetros del modelo de Flory-Huggins
title Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters
spellingShingle Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters
Araújo, Alessandro Alisson de Lemos
Nonionic surfactant
Cloud point
NaCl
Flory-Huggins model
title_short Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters
title_full Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters
title_fullStr Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters
title_full_unstemmed Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters
title_sort Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters
author Araújo, Alessandro Alisson de Lemos
author_facet Araújo, Alessandro Alisson de Lemos
Barros Neto, Eduardo Lins de
Chiavone-Filho, Osvaldo
Foletto, Edson Luiz
author_role author
author2 Barros Neto, Eduardo Lins de
Chiavone-Filho, Osvaldo
Foletto, Edson Luiz
author2_role author
author
author
dc.contributor.author.fl_str_mv Araújo, Alessandro Alisson de Lemos
Barros Neto, Eduardo Lins de
Chiavone-Filho, Osvaldo
Foletto, Edson Luiz
dc.subject.por.fl_str_mv Nonionic surfactant
Cloud point
NaCl
Flory-Huggins model
topic Nonionic surfactant
Cloud point
NaCl
Flory-Huggins model
description In this study, the influence of NaCl on the cloud point of polyethoxylate nonylphenol polyethoxylates (NPEOn ) was investigated. Liquid-liquid surfactants from the family of lauryl alcohol polyethoxylates (C12EOn) and equilibrium curves of the aforementioned aqueous surfactants system with the presence of NaCl were plotted and thermodynamic parameters based on the Flory-Huggins model were obtained. The visual method was used to determine the cloud point. Solutions containing surfactant concentrations between 0.5 and 20% (by weight) and NaCl between 4.9 and 12.1% (by weight) were prepared. Salt had a salting-out effect, decreasing surfactant solubility in water. Furthermore, the cloud point decreased with an increase of NaCl concentration. The Flory-Huggins model satisfactorily described the experimental data for all surfactant + NaCl aqueous mixtures studied
publishDate 2015
dc.date.issued.fl_str_mv 2015-04-05
dc.date.accessioned.fl_str_mv 2021-11-24T20:23:56Z
dc.date.available.fl_str_mv 2021-11-24T20:23:56Z
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.citation.fl_str_mv ARAÚJO, Alessandro Alisson de Lemos; BARROS NETO, Eduardo Lins de; CHIAVONE-FILHO, Osvaldo; FOLETTO, Edson Luiz. Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters. Revista Facultad de Ingeniería Universidad de Antioquia, [S.L.], n. 75, p. 1-2, abr. 2015. Disponível em: https://revistas.udea.edu.co/index.php/ingenieria/article/view/20078. Acesso em: 02 jul. 2021. https://doi.org/10.17533/udea.redin.n75a15
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/45015
dc.identifier.issn.none.fl_str_mv 2422-2844
0120-6230
dc.identifier.doi.none.fl_str_mv 10.17533/udea.redin.n75a15
identifier_str_mv ARAÚJO, Alessandro Alisson de Lemos; BARROS NETO, Eduardo Lins de; CHIAVONE-FILHO, Osvaldo; FOLETTO, Edson Luiz. Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters. Revista Facultad de Ingeniería Universidad de Antioquia, [S.L.], n. 75, p. 1-2, abr. 2015. Disponível em: https://revistas.udea.edu.co/index.php/ingenieria/article/view/20078. Acesso em: 02 jul. 2021. https://doi.org/10.17533/udea.redin.n75a15
2422-2844
0120-6230
10.17533/udea.redin.n75a15
url https://repositorio.ufrn.br/handle/123456789/45015
dc.language.iso.fl_str_mv eng
language eng
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http://creativecommons.org/licenses/by-nc-sa/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-ShareAlike 3.0 Brazil
http://creativecommons.org/licenses/by-nc-sa/3.0/br/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Universidad de Antioquia
publisher.none.fl_str_mv Universidad de Antioquia
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