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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.6b00271
|2 doi
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|a eng
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| 100 |
1 |
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|a Wang, Kai
|e verfasserin
|4 aut
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| 245 |
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|a Mass-Transfer-Controlled Dynamic Interfacial Tension in Microfluidic Emulsification Processes
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| 264 |
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|c 2016
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|a Text
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|a ƒaComputermedien
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|a Date Completed 08.08.2016
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|a Date Revised 06.04.2016
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Varied interfacial tension caused by the unsaturated adsorption of surfactants on dripping droplet surfaces is experimentally studied. The mass transfer and adsorption of surfactants, as well as the generation of fresh interfaces, are considered the main factors dominating the surfactant adsorption ratio on droplet surfaces. The diffusion and convective mass transfer of the surfactants are first distinguished by comparing the adsorption depth and the mass flux boundary layer thickness. A characterized mass transfer time is then calculated by introducing an effective diffusion coefficient. A time ratio is furthermore defined by dividing the droplet generation time by the characteristic mass transfer time, t/tm, in order to compare the rates of surfactant mass transfer and droplet generation. Different control mechanisms for different surfactants are analyzed based on the range of t/t(m), and a criterion time ratio using a simplified characteristic mass transfer time, t(m)*, is finally proposed for predicting the appearance of dynamic interfacial tension
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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1 |
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|a Zhang, Liming
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Wanlu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Luo, Guangsheng
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 32(2016), 13 vom: 05. Apr., Seite 3174-85
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