An "Inside-Out" Microfluidic Approach to Monodisperse Emulsions Stabilized by Solid Particles
An "Inside-Out" Microfluidic Approach to Monodisperse Emulsions Stabilized by Solid Particles
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DOI：
10.1021/ja807764m
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发表时间：
2008-12-10
影响因子：
15
通讯作者：
Kumacheva, Eugenia
中科院分区：
文献类型：
--
作者：
Nie, Zhihong;Park, Jai Il;Kumacheva, Eugenia
我们报告了一种由内而外的多功能微流控方法来生产单分散粒子稳定的乳液以及超胶体聚合物微球。这种方法解决了制备Pickering乳剂的传统策略所面临的挑战，即对液滴尺寸控制不足和连续介质中颗粒过多。该方法将粒子引入液滴阶段而不是连续介质中的浪费降至最低；允许通过控制粒子的浓度或液体的流量来控制粒子对液滴的覆盖；并为更容易地分析Pickering乳状液的形成和屈曲提供了一条途径。
We report a versatile "inside-out" microfluidic approach to producing monodisperse particle-stabilized emulsions, as well as supracolloidal polymer microspheres. This approach addresses the challenges faced in conventional strategies for the preparation of Pickering emulsions, that is, an insufficient control of droplet dimensions and an excess of particles in the continuous media. The proposed method minimizes waste of particles, due to their introduction in the droplet phase, rather than in the continuous medium; allows control over the coverage of droplets with particles by manipulating the concentration of particles or the flow rates of the liquids; and provides a route for an easier analysis of the dynamics of formation and buckling of Pickering emulsions.