DEPENDENCE OF THE CRITICAL AMOUNT OF N-HEXANOL REQUIRED TO FORM A WATER-IN-OIL MICROEMULSION WITH THE SURFACTANT CHARACTERISTICS

DEPENDENCE OF THE CRITICAL AMOUNT OF N-HEXANOL REQUIRED TO FORM A WATER-IN-OIL MICROEMULSION WITH THE SURFACTANT CHARACTERISTICS

The amount of n-hexanol required to produce a clear microemulsion in a water-in-oil quaternary system comprising a surfactant, 2,2,4-trimethylpentane, water and the alkanol, was evaluated employing cationic, anionic, zwitterionic and neutral surfactants. The critical analytical n-hexanol concentrati...

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Autores principales: Abuin,E, Lissi,E, Olivares,K
Lenguaje:English
Publicado: Sociedad Chilena de Química 2004
Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072004000300004
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spelling oai:scielo:S0717-970720040003000042006-03-21DEPENDENCE OF THE CRITICAL AMOUNT OF N-HEXANOL REQUIRED TO FORM A WATER-IN-OIL MICROEMULSION WITH THE SURFACTANT CHARACTERISTICSAbuin,ELissi,EOlivares,KThe amount of n-hexanol required to produce a clear microemulsion in a water-in-oil quaternary system comprising a surfactant, 2,2,4-trimethylpentane, water and the alkanol, was evaluated employing cationic, anionic, zwitterionic and neutral surfactants. The critical analytical n-hexanol concentration, the number of n-hexanol molecules at the interface per surfactant (n), and the distribution constant of the alkanol between the organic pseudophase and the interface are determined by the charge of the surfactant head, being almost independent of the alkyl chain length, the counterion and the surfactant head. The values of n are similar for cationic and anionic surfactants. However, due to a less favorable distribution between the organic solvent and the interface, critical n-hexanol concentrations are significantly higher for the anionic surfactantsinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.49 n.3 20042004-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072004000300004en10.4067/S0717-97072004000300004
institution Scielo Chile
collection Scielo Chile
language English
description The amount of n-hexanol required to produce a clear microemulsion in a water-in-oil quaternary system comprising a surfactant, 2,2,4-trimethylpentane, water and the alkanol, was evaluated employing cationic, anionic, zwitterionic and neutral surfactants. The critical analytical n-hexanol concentration, the number of n-hexanol molecules at the interface per surfactant (n), and the distribution constant of the alkanol between the organic pseudophase and the interface are determined by the charge of the surfactant head, being almost independent of the alkyl chain length, the counterion and the surfactant head. The values of n are similar for cationic and anionic surfactants. However, due to a less favorable distribution between the organic solvent and the interface, critical n-hexanol concentrations are significantly higher for the anionic surfactants
author Abuin,E
Lissi,E
Olivares,K
spellingShingle Abuin,E
Lissi,E
Olivares,K
DEPENDENCE OF THE CRITICAL AMOUNT OF N-HEXANOL REQUIRED TO FORM A WATER-IN-OIL MICROEMULSION WITH THE SURFACTANT CHARACTERISTICS
author_facet Abuin,E
Lissi,E
Olivares,K
author_sort Abuin,E
title DEPENDENCE OF THE CRITICAL AMOUNT OF N-HEXANOL REQUIRED TO FORM A WATER-IN-OIL MICROEMULSION WITH THE SURFACTANT CHARACTERISTICS
title_short DEPENDENCE OF THE CRITICAL AMOUNT OF N-HEXANOL REQUIRED TO FORM A WATER-IN-OIL MICROEMULSION WITH THE SURFACTANT CHARACTERISTICS
title_full DEPENDENCE OF THE CRITICAL AMOUNT OF N-HEXANOL REQUIRED TO FORM A WATER-IN-OIL MICROEMULSION WITH THE SURFACTANT CHARACTERISTICS
title_fullStr DEPENDENCE OF THE CRITICAL AMOUNT OF N-HEXANOL REQUIRED TO FORM A WATER-IN-OIL MICROEMULSION WITH THE SURFACTANT CHARACTERISTICS
title_full_unstemmed DEPENDENCE OF THE CRITICAL AMOUNT OF N-HEXANOL REQUIRED TO FORM A WATER-IN-OIL MICROEMULSION WITH THE SURFACTANT CHARACTERISTICS
title_sort dependence of the critical amount of n-hexanol required to form a water-in-oil microemulsion with the surfactant characteristics
publisher Sociedad Chilena de Química
publishDate 2004
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072004000300004
work_keys_str_mv AT abuine dependenceofthecriticalamountofnhexanolrequiredtoformawaterinoilmicroemulsionwiththesurfactantcharacteristics
AT lissie dependenceofthecriticalamountofnhexanolrequiredtoformawaterinoilmicroemulsionwiththesurfactantcharacteristics
AT olivaresk dependenceofthecriticalamountofnhexanolrequiredtoformawaterinoilmicroemulsionwiththesurfactantcharacteristics
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