| Relationship between Spreading Rate and Wetting Behaviour of Oil on Surface of Surfactant Solution |
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| 作者姓名： | 叶曦 程畅 黄学东 马红孺 |
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| 作者单位： | Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 90103035, 10334020 and 10174041.
We thank K. W. To and Q. Tao for useful discussions and help. |
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| 摘 要： |
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| 关 键 词： | 表面活性物 溶解作用 湿度 传播速度 |
| 收稿时间： | 2006-11-25 |
| 修稿时间： | 2006-11-25 |
Relationship between Spreading Rate and Wetting Behaviour of Oil on Surface of Surfactant Solution |
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| YE Xi,CHENG Yang,HUANG Xue-Dong,MA Hong-Ru.Relationship between Spreading Rate and Wetting Behaviour of Oil on Surface of Surfactant Solution[J].Chinese Physics Letters,2007,24(8):2345-2348. |
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| Authors: | YE Xi CHENG Yang HUANG Xue-Dong MA Hong-Ru |
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| Affiliation: | Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 |
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| Abstract: | We report a systematic investigation of the spreading of a polydimethylsiloxane oil layer on fiat surfaces of solution containing anionic surfactant of sodium dodecylsulfate. The experiment reveals that different wetting behaviours of the oil follow different spreading rates. In the case of complete wetting, it obeys a 0.75 power law, while in the pseudopartial wetting it follows a non-power law. The results can well be explained by a new simple theory of spreading. The theory further predicts that for a complete wetting state there exists another spreading rate. |
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| Keywords: | 68 03 Cd 68 05 -n 68 35 Md |
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