Spreading of Oil Droplets Containing Surfactants and Pesticides on Water Surface Based on the Marangoni Effect
Oil droplets containing surfactants and pesticides are expected to spread on a water surface, under the Marangoni effect, depending on the surfactant. Pesticides are transported into water through this phenomenon. A high-speed video camera was used to measure the movement of Marangoni ridges. Gas ch...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/26/5/1408 |
| _version_ | 1797413481942614016 |
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| author | Jiangyu Liu Xinyu Guo Yong Xu Xuemin Wu |
| author_facet | Jiangyu Liu Xinyu Guo Yong Xu Xuemin Wu |
| author_sort | Jiangyu Liu |
| collection | DOAJ |
| description | Oil droplets containing surfactants and pesticides are expected to spread on a water surface, under the Marangoni effect, depending on the surfactant. Pesticides are transported into water through this phenomenon. A high-speed video camera was used to measure the movement of Marangoni ridges. Gas chromatography with an electron capture detector was used to analyze the concentration of the pesticide in water at different times. Oil droplets containing the surfactant and pesticide spread quickly on the water surface by Marangoni flow, forming an oil film and promoting emulsification of the oil–water interface, which enabled even transport of the pesticide into water, where it was then absorbed by weeds. Surfactants can decrease the surface tension of the water subphase after deposition, thereby enhancing the Marangoni effect in pesticide-containing oil droplets. The time and labor required for applying pesticides in rice fields can be greatly reduced by using the Marangoni effect to transport pesticides to the target. |
| first_indexed | 2024-03-09T05:18:34Z |
| format | Article |
| id | doaj.art-d1cf24c0aa0848978f619161401687c0 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T05:18:34Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-d1cf24c0aa0848978f619161401687c02023-12-03T12:43:29ZengMDPI AGMolecules1420-30492021-03-01265140810.3390/molecules26051408Spreading of Oil Droplets Containing Surfactants and Pesticides on Water Surface Based on the Marangoni EffectJiangyu Liu0Xinyu Guo1Yong Xu2Xuemin Wu3Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, ChinaInnovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, ChinaInnovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, ChinaInnovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, ChinaOil droplets containing surfactants and pesticides are expected to spread on a water surface, under the Marangoni effect, depending on the surfactant. Pesticides are transported into water through this phenomenon. A high-speed video camera was used to measure the movement of Marangoni ridges. Gas chromatography with an electron capture detector was used to analyze the concentration of the pesticide in water at different times. Oil droplets containing the surfactant and pesticide spread quickly on the water surface by Marangoni flow, forming an oil film and promoting emulsification of the oil–water interface, which enabled even transport of the pesticide into water, where it was then absorbed by weeds. Surfactants can decrease the surface tension of the water subphase after deposition, thereby enhancing the Marangoni effect in pesticide-containing oil droplets. The time and labor required for applying pesticides in rice fields can be greatly reduced by using the Marangoni effect to transport pesticides to the target.https://www.mdpi.com/1420-3049/26/5/1408Marangoni effectspreadingpesticide transportsurfactants |
| spellingShingle | Jiangyu Liu Xinyu Guo Yong Xu Xuemin Wu Spreading of Oil Droplets Containing Surfactants and Pesticides on Water Surface Based on the Marangoni Effect Molecules Marangoni effect spreading pesticide transport surfactants |
| title | Spreading of Oil Droplets Containing Surfactants and Pesticides on Water Surface Based on the Marangoni Effect |
| title_full | Spreading of Oil Droplets Containing Surfactants and Pesticides on Water Surface Based on the Marangoni Effect |
| title_fullStr | Spreading of Oil Droplets Containing Surfactants and Pesticides on Water Surface Based on the Marangoni Effect |
| title_full_unstemmed | Spreading of Oil Droplets Containing Surfactants and Pesticides on Water Surface Based on the Marangoni Effect |
| title_short | Spreading of Oil Droplets Containing Surfactants and Pesticides on Water Surface Based on the Marangoni Effect |
| title_sort | spreading of oil droplets containing surfactants and pesticides on water surface based on the marangoni effect |
| topic | Marangoni effect spreading pesticide transport surfactants |
| url | https://www.mdpi.com/1420-3049/26/5/1408 |
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