Neutron reflectivity studies of Aerosol-OT monolayers adsorbed at the oil/water, air/water and hydrophobic solid/water interfaces
The structures of monolayers of Aerosol-OT (sodium bis(2-ethylhexyl) sulfosuccinate) adsorbed at the oil/water, air/water and hydrophobic solid/water interfaces have been determined using neutron specular reflection in conjunction with isotopic substitution. The areas per molecule were found to be 7...
| मुख्य लेखकों: | , , , , , , |
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| स्वरूप: | Journal article |
| भाषा: | English |
| प्रकाशित: |
Elsevier
1998
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| _version_ | 1826286649067175936 |
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| author | Li, Z Lu, JR Fragneto, G Thomas, R Binks, B Fletcher, P Penfold, J |
| author_facet | Li, Z Lu, JR Fragneto, G Thomas, R Binks, B Fletcher, P Penfold, J |
| author_sort | Li, Z |
| collection | OXFORD |
| description | The structures of monolayers of Aerosol-OT (sodium bis(2-ethylhexyl) sulfosuccinate) adsorbed at the oil/water, air/water and hydrophobic solid/water interfaces have been determined using neutron specular reflection in conjunction with isotopic substitution. The areas per molecule were found to be 78±2 Å and 80±5 Å at the critical micelle concentration (CMC=2.5 x 10-3 M), increasing to 132±5 Å at 8.0 x 10-6 M and 21 aut 3 ± 20 A2 at 2.5 x,10-6 M at the air/water and hydrophobic solid/water interfaces respectively. The thicknesses of the AOT layer at the air/water and solid/water interfaces were found to be 18±2 Å and 15±2 Å with no significant change with concentration. At the oil/water interface the thickness is much larger than the fully extended molecule and is 26±2 Å at an area per molecule of 68±2 Å2. This is probably caused by roughening of the oil/water interface by thermal fluctuations. |
| first_indexed | 2024-03-07T01:46:52Z |
| format | Journal article |
| id | oxford-uuid:98b43169-e8fd-4e09-98f4-0e6e9dd94fd7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:46:52Z |
| publishDate | 1998 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:98b43169-e8fd-4e09-98f4-0e6e9dd94fd72022-03-27T00:08:59ZNeutron reflectivity studies of Aerosol-OT monolayers adsorbed at the oil/water, air/water and hydrophobic solid/water interfacesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:98b43169-e8fd-4e09-98f4-0e6e9dd94fd7EnglishSymplectic Elements at OxfordElsevier1998Li, ZLu, JRFragneto, GThomas, RBinks, BFletcher, PPenfold, JThe structures of monolayers of Aerosol-OT (sodium bis(2-ethylhexyl) sulfosuccinate) adsorbed at the oil/water, air/water and hydrophobic solid/water interfaces have been determined using neutron specular reflection in conjunction with isotopic substitution. The areas per molecule were found to be 78±2 Å and 80±5 Å at the critical micelle concentration (CMC=2.5 x 10-3 M), increasing to 132±5 Å at 8.0 x 10-6 M and 21 aut 3 ± 20 A2 at 2.5 x,10-6 M at the air/water and hydrophobic solid/water interfaces respectively. The thicknesses of the AOT layer at the air/water and solid/water interfaces were found to be 18±2 Å and 15±2 Å with no significant change with concentration. At the oil/water interface the thickness is much larger than the fully extended molecule and is 26±2 Å at an area per molecule of 68±2 Å2. This is probably caused by roughening of the oil/water interface by thermal fluctuations. |
| spellingShingle | Li, Z Lu, JR Fragneto, G Thomas, R Binks, B Fletcher, P Penfold, J Neutron reflectivity studies of Aerosol-OT monolayers adsorbed at the oil/water, air/water and hydrophobic solid/water interfaces |
| title | Neutron reflectivity studies of Aerosol-OT monolayers adsorbed at the oil/water, air/water and hydrophobic solid/water interfaces |
| title_full | Neutron reflectivity studies of Aerosol-OT monolayers adsorbed at the oil/water, air/water and hydrophobic solid/water interfaces |
| title_fullStr | Neutron reflectivity studies of Aerosol-OT monolayers adsorbed at the oil/water, air/water and hydrophobic solid/water interfaces |
| title_full_unstemmed | Neutron reflectivity studies of Aerosol-OT monolayers adsorbed at the oil/water, air/water and hydrophobic solid/water interfaces |
| title_short | Neutron reflectivity studies of Aerosol-OT monolayers adsorbed at the oil/water, air/water and hydrophobic solid/water interfaces |
| title_sort | neutron reflectivity studies of aerosol ot monolayers adsorbed at the oil water air water and hydrophobic solid water interfaces |
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