| EPSRC Reference: |
GR/M89874/01 |
| Title: |
VISCO-ELASTIC PROPERTIES OF POLYMER SURFACTANTS AT OIL -WATER INTERFACES AN EXPERIMENTAL TEST OF A NEW THEOR |
| Principal Investigator: |
Richards, Dr R |
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| Department: |
Chemistry |
| Organisation: |
Durham, University of |
| Scheme: |
ROPA |
| Starts: |
01 March 2000 |
Ends: |
28 February 2002 |
Value (£): |
83,319
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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An experimental test iof a new theory of capillary waves of liquid-liquid interface supporting a dibrush polymer layer is proposed.The new theory suggests that the thickness of the polymer l;ayer should be accessible from the values of the interfacial visco-elastic moduli, i.e. the interfacial tension and bending modules of the film, additionally the theory proposes that the often used transverse shear of viscosity is non-existant.The theory provides a molecular insight into the dynamic behaviour of polymers at fluid interfaces which is inaccessible in the continuum theories used hitherto. Building on previous experience in surface quasi-elastic light scattering at the air-water interface, an experimental programme of interfacial quasi-elastic light scattering from liquid - liquid interfaces is proposed. Objectives are; test of the accuracy of the theory in situations approximating those used in the derivation of the theory; determine the existence (or not) of the transverse shear viscosity; obtain bending moduli for brush like layers at the interface; test the proposal that the layer asymmetry also contributes to the interfacial dynamics in addition to bulk phase property asymmetry.
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Key Findings |
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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 |
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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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