Micro droplet formation towards continuous nanoparticles synthesis

Marek Wojnicki; Magdalena Luty-Blocho; Volker Hessel; Edit Csapó; Ditta Ungor; Krzysztof Fitzner

doi:10.3390/mi9050248

Micro droplet formation towards continuous nanoparticles synthesis

Marek Wojnicki, Magdalena Luty-Blocho, Volker Hessel, Edit Csapó, Ditta Ungor, Krzysztof Fitzner

Micro Flow Chemistry and Synthetic Methodology

Research output: Contribution to journal › Article › Academic › peer-review

19 Citations (Scopus)

114 Downloads (Pure)

Abstract

In this paper, micro droplets are generated in a microfluidic focusing contactor and then they move sequentially in a free-flowing mode (no wall contact). For this purpose, two different micro-flow glass devices (hydrophobic and hydrophilic) were used. During the study, the influence of the flow rate of the water phase and the oil phase on the droplet size and size distribution was investigated. Moreover, the influence of the oil phase viscosity on the droplet size was analyzed. It was found that the size and size distribution of the droplets can be controlled simply by the aqueous phase flow rate. Additionally, 2D simulations to determine the droplet size were performed and compared with the experiment.

Original language	English
Article number	248
Journal	Micromachines
Volume	9
Issue number	5
DOIs	https://doi.org/10.3390/mi9050248
Publication status	Published - 18 May 2018

Keywords

Comsol Multiphysics
Droplets
Microreactor
Sequential flow
Simulations of 2D flow
Two-phase flow

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10.3390/mi9050248

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AU - Wojnicki, Marek

AU - Luty-Blocho, Magdalena

AU - Hessel, Volker

AU - Csapó, Edit

AU - Ungor, Ditta

AU - Fitzner, Krzysztof

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N2 - In this paper, micro droplets are generated in a microfluidic focusing contactor and then they move sequentially in a free-flowing mode (no wall contact). For this purpose, two different micro-flow glass devices (hydrophobic and hydrophilic) were used. During the study, the influence of the flow rate of the water phase and the oil phase on the droplet size and size distribution was investigated. Moreover, the influence of the oil phase viscosity on the droplet size was analyzed. It was found that the size and size distribution of the droplets can be controlled simply by the aqueous phase flow rate. Additionally, 2D simulations to determine the droplet size were performed and compared with the experiment.

AB - In this paper, micro droplets are generated in a microfluidic focusing contactor and then they move sequentially in a free-flowing mode (no wall contact). For this purpose, two different micro-flow glass devices (hydrophobic and hydrophilic) were used. During the study, the influence of the flow rate of the water phase and the oil phase on the droplet size and size distribution was investigated. Moreover, the influence of the oil phase viscosity on the droplet size was analyzed. It was found that the size and size distribution of the droplets can be controlled simply by the aqueous phase flow rate. Additionally, 2D simulations to determine the droplet size were performed and compared with the experiment.

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KW - Droplets

KW - Microreactor

KW - Sequential flow

KW - Simulations of 2D flow

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JO - Micromachines

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Micro droplet formation towards continuous nanoparticles synthesis

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