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  Evaporation-Induced Crystallization of Surfactants in Sessile Multicomponent Droplets

Li, Y., Salvator, V., Wijshoff, H., Versluis, M., & Lohse, D. (2020). Evaporation-Induced Crystallization of Surfactants in Sessile Multicomponent Droplets. Langmuir, 36, 7545-7552. doi:10.1021/acs.langmuir.0c01169.

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 Creators:
Li, Yaxing, Author
Salvator, Valentin, Author
Wijshoff, Herman, Author
Versluis, Michel, Author
Lohse, Detlef1, Author           
Affiliations:
1Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063285              

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 Abstract: 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 134 (1991) 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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Language(s): eng - English
 Dates: 2020-06-152020
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acs.langmuir.0c01169
 Degree: -

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Title: Langmuir
Source Genre: Journal
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Pages: - Volume / Issue: 36 Sequence Number: - Start / End Page: 7545 - 7552 Identifier: ISSN: 0743-7463
ISSN: 1520-5827