Macroscopic modelling of the surface tension of polymer-surfactant systems
Polymer-surfactant mixtures are increasingly being used in a wide range of applications. Weakly-interacting systems, such as SDS/PEO and SDS/PVP, comprise ionic surfactants and neutral polymers, while strongly-interacting systems, such as SDS/POLYDMDAAC and C12TAB/NaPSS, comprise ionic surfactants a...
| Main Authors: | , , , , |
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| Format: | Journal article |
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2007
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| _version_ | 1826272889520783360 |
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| author | Bell, C Breward, C Howell, P Penfold, J Thomas, R |
| author_facet | Bell, C Breward, C Howell, P Penfold, J Thomas, R |
| author_sort | Bell, C |
| collection | OXFORD |
| description | Polymer-surfactant mixtures are increasingly being used in a wide range of applications. Weakly-interacting systems, such as SDS/PEO and SDS/PVP, comprise ionic surfactants and neutral polymers, while strongly-interacting systems, such as SDS/POLYDMDAAC and C12TAB/NaPSS, comprise ionic surfactants and oppositely charged ionic polymers. The complex nature of interactions in the mixtures leads to interesting and surprising surface tension profiles as the concentrations of polymer and surfactant are varied. The purpose of our research has been to develop a model to explain these surface tension profiles and to understand how they relate to the formation of different complexes in the bulk solution. In this paper we shouw how an existing model based on the law of mass action can be extended to model the surface tension of weakly-interacting systems, and we also extend it further to produce a model for the surface tension of strongly interacting systems. Applying the model to a variety of strongly-interacting systems gives remarkable agreement with the experimental results. The model provides a sound theoretical basis for comparing and contrasting the behaviour of different systems and greatly enhances our understanding of the features observed. |
| first_indexed | 2024-03-06T22:19:42Z |
| format | Journal article |
| id | oxford-uuid:549bd3a1-3dbc-484f-89a1-bcdda0a2eda6 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:19:42Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:549bd3a1-3dbc-484f-89a1-bcdda0a2eda62022-03-26T16:38:57ZMacroscopic modelling of the surface tension of polymer-surfactant systemsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:549bd3a1-3dbc-484f-89a1-bcdda0a2eda6Mathematical Institute - ePrints2007Bell, CBreward, CHowell, PPenfold, JThomas, RPolymer-surfactant mixtures are increasingly being used in a wide range of applications. Weakly-interacting systems, such as SDS/PEO and SDS/PVP, comprise ionic surfactants and neutral polymers, while strongly-interacting systems, such as SDS/POLYDMDAAC and C12TAB/NaPSS, comprise ionic surfactants and oppositely charged ionic polymers. The complex nature of interactions in the mixtures leads to interesting and surprising surface tension profiles as the concentrations of polymer and surfactant are varied. The purpose of our research has been to develop a model to explain these surface tension profiles and to understand how they relate to the formation of different complexes in the bulk solution. In this paper we shouw how an existing model based on the law of mass action can be extended to model the surface tension of weakly-interacting systems, and we also extend it further to produce a model for the surface tension of strongly interacting systems. Applying the model to a variety of strongly-interacting systems gives remarkable agreement with the experimental results. The model provides a sound theoretical basis for comparing and contrasting the behaviour of different systems and greatly enhances our understanding of the features observed. |
| spellingShingle | Bell, C Breward, C Howell, P Penfold, J Thomas, R Macroscopic modelling of the surface tension of polymer-surfactant systems |
| title | Macroscopic modelling of the surface tension of polymer-surfactant systems |
| title_full | Macroscopic modelling of the surface tension of polymer-surfactant systems |
| title_fullStr | Macroscopic modelling of the surface tension of polymer-surfactant systems |
| title_full_unstemmed | Macroscopic modelling of the surface tension of polymer-surfactant systems |
| title_short | Macroscopic modelling of the surface tension of polymer-surfactant systems |
| title_sort | macroscopic modelling of the surface tension of polymer surfactant systems |
| work_keys_str_mv | AT bellc macroscopicmodellingofthesurfacetensionofpolymersurfactantsystems AT brewardc macroscopicmodellingofthesurfacetensionofpolymersurfactantsystems AT howellp macroscopicmodellingofthesurfacetensionofpolymersurfactantsystems AT penfoldj macroscopicmodellingofthesurfacetensionofpolymersurfactantsystems AT thomasr macroscopicmodellingofthesurfacetensionofpolymersurfactantsystems |