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Split or slip - passive generation of monodisperse double emulsions with cores of varying viscosity in microfluidic tandem step emulsification system

机译:微流体串联乳化系统中具有不同粘度的单分散双乳液的分裂或滑动发电

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摘要

We investigate the role of viscosities on the formation of double emulsion in a microfluidic step emulsification system. Aqueous droplets of various viscosities and sizes were engulfed in fluorocarbon oil and subsequently transformed into double droplets in the microfluidic step emulsifying device. We identify two distinct regimes of double droplet formation: (i) core droplets split into multiple smaller droplets, or (ii) cores slip whole into the forming oil shell. We show that the viscosity ratio of the core and shell phases plays a crucial role in determining the mode of formation of the double emulsions. Finally, we demonstrate that high viscosity of the core droplet allows for generation of double emulsions with constant shell thickness for cores of various sizes.
机译:我们调查粘度对微流体步长乳化系统中双乳液形成的作用。 各种粘度和尺寸的水滴在氟碳油中吞噬,随后在微流体步骤乳化装置中转化成双液滴。 我们确定了两种不同的双液滴形成制度:(i)核心液滴分成多个较小的液滴,或(ii)核心将整体滑入成型油壳中。 我们表明核心和壳阶段的粘度比在确定双乳液的形成模式时起着至关重要的作用。 最后,我们表明芯液体的高粘度允许产生具有恒定壳体厚度的双乳液,用于各种尺寸的芯。

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  • 来源
    《RSC Advances》 |2020年第39期|共8页
  • 作者单位

    Polish Acad Sci Inst Phys Chem Kasprzaka 44-52 PL-01224 Warsaw Poland;

    Polish Acad Sci Inst Phys Chem Kasprzaka 44-52 PL-01224 Warsaw Poland;

    Polish Acad Sci Inst Phys Chem Kasprzaka 44-52 PL-01224 Warsaw Poland;

    Polish Acad Sci Inst Phys Chem Kasprzaka 44-52 PL-01224 Warsaw Poland;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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