Influence of sodium chloride on the cloud point of polyethoxylate surfactants and estimation of Flory-Huggins model parameters
Autor(a) principal: | |
---|---|
Data de Publicação: | 2015 |
Outros Autores: | , , |
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 |
id |
UFRN_f986d056a3018497110ca9375731e1de |
---|---|
oai_identifier_str |
oai:https://repositorio.ufrn.br:123456789/45015 |
network_acronym_str |
UFRN |
network_name_str |
Repositório Institucional da UFRN |
repository_id_str |
|
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 |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-ShareAlike 3.0 Brazil 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 |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
instname_str |
Universidade Federal do Rio Grande do Norte (UFRN) |
instacron_str |
UFRN |
institution |
UFRN |
reponame_str |
Repositório Institucional da UFRN |
collection |
Repositório Institucional da UFRN |
bitstream.url.fl_str_mv |
https://repositorio.ufrn.br/bitstream/123456789/45015/2/license_rdf https://repositorio.ufrn.br/bitstream/123456789/45015/3/license.txt https://repositorio.ufrn.br/bitstream/123456789/45015/1/InfluenceOfSodiumChlorideOnTheCloudPoint_BARROSNETO_2015.pdf |
bitstream.checksum.fl_str_mv |
996f8b5afe3136b76594f43bfda24c5e e9597aa2854d128fd968be5edc8a28d9 8cfcc8c87612ff3e0874e9ae14b361fa |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN) |
repository.mail.fl_str_mv |
|
_version_ |
1814832697973932032 |