Thermal response of a non-ionic surfactant layer at the water/oil interface during microwave heating
This study measured in-situ the interfacial tension of the decane/water interface during microwave radiation, in the presence of the non-ionic surfactants Triton X-100 and X-405. It has been found that the two surfactants, with different hydrophilicity, displayed contrasting responses to the microwa...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Elsevier BV
2018
|
| Online Access: | http://hdl.handle.net/20.500.11937/72721 |
| _version_ | 1848762825594372096 |
|---|---|
| author | Shibata, Y. Hyde, A. Asakuma, Y. Phan, Chi |
| author_facet | Shibata, Y. Hyde, A. Asakuma, Y. Phan, Chi |
| author_sort | Shibata, Y. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This study measured in-situ the interfacial tension of the decane/water interface during microwave radiation, in the presence of the non-ionic surfactants Triton X-100 and X-405. It has been found that the two surfactants, with different hydrophilicity, displayed contrasting responses to the microwave heating. For X-100, the interfacial tension increased with the solution temperature. However, for X-105, the tension decreased as the solution temperature rose. The tension-temperature trends were consistent for a range of different microwave pulsing patterns. The results can be explained by considering the molecular origins of the interfacial forces. In particular, a semi-quantitative analysis verified that the hydrophobic interaction between water in the bulk and water associated with the surfactant tails increases with rising temperature. This thermal response is opposite to the relationship between temperature and hydrophilic interaction. The results demonstrated that rigorous thermodynamic analysis must be applied in combination with the conventional HLB in designing targeted surfactant systems. |
| first_indexed | 2025-11-14T10:53:43Z |
| format | Journal Article |
| id | curtin-20.500.11937-72721 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:53:43Z |
| publishDate | 2018 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-727212020-06-15T03:05:16Z Thermal response of a non-ionic surfactant layer at the water/oil interface during microwave heating Shibata, Y. Hyde, A. Asakuma, Y. Phan, Chi This study measured in-situ the interfacial tension of the decane/water interface during microwave radiation, in the presence of the non-ionic surfactants Triton X-100 and X-405. It has been found that the two surfactants, with different hydrophilicity, displayed contrasting responses to the microwave heating. For X-100, the interfacial tension increased with the solution temperature. However, for X-105, the tension decreased as the solution temperature rose. The tension-temperature trends were consistent for a range of different microwave pulsing patterns. The results can be explained by considering the molecular origins of the interfacial forces. In particular, a semi-quantitative analysis verified that the hydrophobic interaction between water in the bulk and water associated with the surfactant tails increases with rising temperature. This thermal response is opposite to the relationship between temperature and hydrophilic interaction. The results demonstrated that rigorous thermodynamic analysis must be applied in combination with the conventional HLB in designing targeted surfactant systems. 2018 Journal Article http://hdl.handle.net/20.500.11937/72721 10.1016/j.colsurfa.2018.08.010 Elsevier BV restricted |
| spellingShingle | Shibata, Y. Hyde, A. Asakuma, Y. Phan, Chi Thermal response of a non-ionic surfactant layer at the water/oil interface during microwave heating |
| title | Thermal response of a non-ionic surfactant layer at the water/oil interface during microwave heating |
| title_full | Thermal response of a non-ionic surfactant layer at the water/oil interface during microwave heating |
| title_fullStr | Thermal response of a non-ionic surfactant layer at the water/oil interface during microwave heating |
| title_full_unstemmed | Thermal response of a non-ionic surfactant layer at the water/oil interface during microwave heating |
| title_short | Thermal response of a non-ionic surfactant layer at the water/oil interface during microwave heating |
| title_sort | thermal response of a non-ionic surfactant layer at the water/oil interface during microwave heating |
| url | http://hdl.handle.net/20.500.11937/72721 |