Evaporation-Induced Crystallization of Surfactants in Sessile Multicomponent Droplets

Surfactants have been widely studied and used in controlling droplet evaporation. In this work, we observe and study the crystallization of sodium dodecyl sulfate (SDS) within an evaporating glycerol-water mixture droplet. The crystallization is induced by the preferential evaporation of water, whic...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 36(2020), 26 vom: 07. Juli, Seite 7545-7552
1. Verfasser: Li, Yaxing (VerfasserIn)
Weitere Verfasser: Salvator, Valentin, Wijshoff, Herman, Versluis, Michel, Lohse, Detlef
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a Surfactants have been widely studied and used in controlling droplet evaporation. In this work, we observe and study the crystallization of sodium dodecyl sulfate (SDS) within an evaporating glycerol-water mixture droplet. The crystallization is induced by the preferential evaporation of water, which decreases the solubility of SDS in the mixture. As a consequence, the crystals shield the droplet surface and cease the evaporation. The universality of the evaporation characteristics for a range of droplet sizes is revealed by applying a diffusion model, extended by Raoult's law. To describe the nucleation and growth of the crystals, we employ the 2-dimensional crystallization model of Weinberg [J. Non-Cryst. Solids 1991, 134, 116]. The results of this model compare favorably to our experimental results. Our findings may inspire the community to reconsider the role of high concentration of surfactants in a multicomponent evaporation system 
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700 1 |a Wijshoff, Herman  |e verfasserin  |4 aut 
700 1 |a Versluis, Michel  |e verfasserin  |4 aut 
700 1 |a Lohse, Detlef  |e verfasserin  |4 aut 
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