| EPSRC Reference: |
GR/M83797/01 |
| Title: |
SURFACTANTS AT EXPANDING LIQUID SURFACES |
| Principal Investigator: |
Bain, Professor CD |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Oxford Chemistry |
| Organisation: |
University of Oxford |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
10 February 2000 |
Ends: |
09 November 2003 |
Value (£): |
154,886
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| EPSRC Research Topic Classifications: |
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| EPSRC Industrial Sector Classifications: |
| Manufacturing |
No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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Expanding liquid surfaces occur widely in nature and in technological applications. The presence of surfactants dramatically changes the behaviour of liquid surfaces under dynamic conditions. The Marangoni that flows that arise from surface tension gradients can dominate the fluid dynamics of drops and thin films. This proposal will exploit recent developments in experimental techniques to study expanding liquid surfaces on the 0.1-1 second timescale. A liquid surface under continuous steady-state expansion will be established in an overflowing cylinder. The interfacial properties will be determined directly, quantitatively and non-invasively by ellipsometry, surface light scattering, neutron reflection and laser Doppler velocimetry. The approach will provide enormous benefits over previous research that has relied almost exclusively on the measurement of dynamic surface tension. A wide range of pure surfactants will be examined in order to determine the factors controlling the adsorption kinetics on the sub-second timescale and to develop a phenomenological understanding of Marangoni effects in surfactant solutions on this timescale.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.ox.ac.uk |