Dynamic surface tension studies on poly(N-vinylcaprolactam/N-vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate) at the air-liquid interface
The adsorption of poly(N-vinylcaprolactam/N-vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate), a commercial product with the trade name of Gaffix® VC-713 and currently used as a kinetic inhibitor for natural gas hydrates, has been experimentally studied at the air–liquid interface using surface...
| Main Authors: | , , |
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| Format: | Journal Article |
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Elsevier BV
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/17603 |
| _version_ | 1848749509283151872 |
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| author | Rojas, Yenny Phan, Chi Lou, Xia |
| author_facet | Rojas, Yenny Phan, Chi Lou, Xia |
| author_sort | Rojas, Yenny |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The adsorption of poly(N-vinylcaprolactam/N-vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate), a commercial product with the trade name of Gaffix® VC-713 and currently used as a kinetic inhibitor for natural gas hydrates, has been experimentally studied at the air–liquid interface using surface tension measurements. The influence of polymer concentration and temperature on the adsorption of the polymer was analysed. The equilibrium experimental data obtained at both 293 K and 278 K has been fitted using the analogous surface equation of state for the Langmuir isotherm. Dynamic adsorption has been modelled using both diffusion-controlled and asymptotic models. The values of the surface tension and the surface excess at saturation showed that the polymer was very active at the air–liquid interface. Equilibrium surface tension indicated that temperature has a weak influence on the number of moles of Gaffix® VC-713 adsorbed on the interface. The dynamic adsorption was controlled by diffusion process initially, in which a rapid reduction in surface tension was observed. It was then followed by a slow polymer reorganization process. A strong dependence of the dynamic adsorption on both the temperature and the polymer concentrations was well demonstrated. |
| first_indexed | 2025-11-14T07:22:04Z |
| format | Journal Article |
| id | curtin-20.500.11937-17603 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:22:04Z |
| publishDate | 2010 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-176032017-09-13T15:43:06Z Dynamic surface tension studies on poly(N-vinylcaprolactam/N-vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate) at the air-liquid interface Rojas, Yenny Phan, Chi Lou, Xia The adsorption of poly(N-vinylcaprolactam/N-vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate), a commercial product with the trade name of Gaffix® VC-713 and currently used as a kinetic inhibitor for natural gas hydrates, has been experimentally studied at the air–liquid interface using surface tension measurements. The influence of polymer concentration and temperature on the adsorption of the polymer was analysed. The equilibrium experimental data obtained at both 293 K and 278 K has been fitted using the analogous surface equation of state for the Langmuir isotherm. Dynamic adsorption has been modelled using both diffusion-controlled and asymptotic models. The values of the surface tension and the surface excess at saturation showed that the polymer was very active at the air–liquid interface. Equilibrium surface tension indicated that temperature has a weak influence on the number of moles of Gaffix® VC-713 adsorbed on the interface. The dynamic adsorption was controlled by diffusion process initially, in which a rapid reduction in surface tension was observed. It was then followed by a slow polymer reorganization process. A strong dependence of the dynamic adsorption on both the temperature and the polymer concentrations was well demonstrated. 2010 Journal Article http://hdl.handle.net/20.500.11937/17603 10.1016/j.colsurfa.2009.11.038 Elsevier BV restricted |
| spellingShingle | Rojas, Yenny Phan, Chi Lou, Xia Dynamic surface tension studies on poly(N-vinylcaprolactam/N-vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate) at the air-liquid interface |
| title | Dynamic surface tension studies on poly(N-vinylcaprolactam/N-vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate) at the air-liquid interface |
| title_full | Dynamic surface tension studies on poly(N-vinylcaprolactam/N-vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate) at the air-liquid interface |
| title_fullStr | Dynamic surface tension studies on poly(N-vinylcaprolactam/N-vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate) at the air-liquid interface |
| title_full_unstemmed | Dynamic surface tension studies on poly(N-vinylcaprolactam/N-vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate) at the air-liquid interface |
| title_short | Dynamic surface tension studies on poly(N-vinylcaprolactam/N-vinylpyrrolidone/N,N-dimethylaminoethyl methacrylate) at the air-liquid interface |
| title_sort | dynamic surface tension studies on poly(n-vinylcaprolactam/n-vinylpyrrolidone/n,n-dimethylaminoethyl methacrylate) at the air-liquid interface |
| url | http://hdl.handle.net/20.500.11937/17603 |