Neutron small angle scattering studies of micellar growth in mixed anionic-nonionic surfactants, sodium dodecyl sulfate, SDS, and hexaethylene glycol monododecyl ether, C12E6, in the presence and absence of solubilized alkane, hexadecane
Small angle neutron scattering, SANS, has been used to investigate the structure of mixed ionic-nonionic surfactant micelles of SDS and C12E6. For solution compositions rich in C12E6, the evolution of micelle size with composition exhibits a pronounced maximum, in qualitative agreement with the theo...
| Autors principals: | , , |
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| Format: | Journal article |
| Idioma: | English |
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2002
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| _version_ | 1826267076228022272 |
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| author | Penfold, J Staples, E Tucker, I |
| author_facet | Penfold, J Staples, E Tucker, I |
| author_sort | Penfold, J |
| collection | OXFORD |
| description | Small angle neutron scattering, SANS, has been used to investigate the structure of mixed ionic-nonionic surfactant micelles of SDS and C12E6. For solution compositions rich in C12E6, the evolution of micelle size with composition exhibits a pronounced maximum, in qualitative agreement with the theoretical predictions of Shiloach and Blankschtein [Langmuir 1998, 14, 7166], but with some important quantitative differences which are discussed. The solubilization of the alkane, hexadecane, into the mixed surfactant micelle suppresses the micelle growth with changing solution composition. For micelles rich in C12E6, hexadecane is solubilized predominantly into the palisade layer of the micelles, favoring small spherical micelles. The micellar growth with changing solution composition arises from changes in the balance between the headgroup and steric contributions to the free energy of micellization, and the addition of alkane further alters that balance in favor of small spherical micelles. |
| first_indexed | 2024-03-06T20:48:39Z |
| format | Journal article |
| id | oxford-uuid:36cf884c-4057-439b-b5e0-d4fa5c9fd2f8 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:48:39Z |
| publishDate | 2002 |
| record_format | dspace |
| spelling | oxford-uuid:36cf884c-4057-439b-b5e0-d4fa5c9fd2f82022-03-26T13:40:12ZNeutron small angle scattering studies of micellar growth in mixed anionic-nonionic surfactants, sodium dodecyl sulfate, SDS, and hexaethylene glycol monododecyl ether, C12E6, in the presence and absence of solubilized alkane, hexadecaneJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:36cf884c-4057-439b-b5e0-d4fa5c9fd2f8EnglishSymplectic Elements at Oxford2002Penfold, JStaples, ETucker, ISmall angle neutron scattering, SANS, has been used to investigate the structure of mixed ionic-nonionic surfactant micelles of SDS and C12E6. For solution compositions rich in C12E6, the evolution of micelle size with composition exhibits a pronounced maximum, in qualitative agreement with the theoretical predictions of Shiloach and Blankschtein [Langmuir 1998, 14, 7166], but with some important quantitative differences which are discussed. The solubilization of the alkane, hexadecane, into the mixed surfactant micelle suppresses the micelle growth with changing solution composition. For micelles rich in C12E6, hexadecane is solubilized predominantly into the palisade layer of the micelles, favoring small spherical micelles. The micellar growth with changing solution composition arises from changes in the balance between the headgroup and steric contributions to the free energy of micellization, and the addition of alkane further alters that balance in favor of small spherical micelles. |
| spellingShingle | Penfold, J Staples, E Tucker, I Neutron small angle scattering studies of micellar growth in mixed anionic-nonionic surfactants, sodium dodecyl sulfate, SDS, and hexaethylene glycol monododecyl ether, C12E6, in the presence and absence of solubilized alkane, hexadecane |
| title | Neutron small angle scattering studies of micellar growth in mixed anionic-nonionic surfactants, sodium dodecyl sulfate, SDS, and hexaethylene glycol monododecyl ether, C12E6, in the presence and absence of solubilized alkane, hexadecane |
| title_full | Neutron small angle scattering studies of micellar growth in mixed anionic-nonionic surfactants, sodium dodecyl sulfate, SDS, and hexaethylene glycol monododecyl ether, C12E6, in the presence and absence of solubilized alkane, hexadecane |
| title_fullStr | Neutron small angle scattering studies of micellar growth in mixed anionic-nonionic surfactants, sodium dodecyl sulfate, SDS, and hexaethylene glycol monododecyl ether, C12E6, in the presence and absence of solubilized alkane, hexadecane |
| title_full_unstemmed | Neutron small angle scattering studies of micellar growth in mixed anionic-nonionic surfactants, sodium dodecyl sulfate, SDS, and hexaethylene glycol monododecyl ether, C12E6, in the presence and absence of solubilized alkane, hexadecane |
| title_short | Neutron small angle scattering studies of micellar growth in mixed anionic-nonionic surfactants, sodium dodecyl sulfate, SDS, and hexaethylene glycol monododecyl ether, C12E6, in the presence and absence of solubilized alkane, hexadecane |
| title_sort | neutron small angle scattering studies of micellar growth in mixed anionic nonionic surfactants sodium dodecyl sulfate sds and hexaethylene glycol monododecyl ether c12e6 in the presence and absence of solubilized alkane hexadecane |
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