Enhanced Droplet Size Control in Liquid-Liquid Emulsions Obtained in a Wire-Guided X-Mixer

Thapanee Bangjang; Nikolay Cherkasov; Petr Denissenko; Attasak Jaree; Evgeny V. Rebrov

doi:10.1002/ceat.201800440

Enhanced Droplet Size Control in Liquid-Liquid Emulsions Obtained in a Wire-Guided X-Mixer

Thapanee Bangjang, Nikolay Cherkasov (Corresponding author), Petr Denissenko, Attasak Jaree, Evgeny V. Rebrov (Corresponding author)

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

2 Citations (Scopus)

Abstract

The droplet size in a liquid-liquid emulsion can be controlled by placing a metal wire along the centerline of an X-mixer. Droplets gradually form when flowing along the wire, with droplet separation occurring at the tip of the wire rather than at the channel intersection in the X-mixer. The droplet size is now defined by the Plateau-Rayleigh instability developing in the axisymmetric annular flow region rather than by a sophisticated and hardly predictable three-dimensional flow at the channel intersection. The wire-guided droplet formation allows for fine control of the droplet size by changing the wire diameter, the position of the wire tip, and the flow rates. Further control of the droplet size can be achieved by adjusting the surface tension by adding a surfactant.

Original language	English
Pages (from-to)	1053-1058
Number of pages	6
Journal	Chemical Engineering and Technology
Volume	42
Issue number	5
DOIs	https://doi.org/10.1002/ceat.201800440
Publication status	Published - May 2019

Bibliographical note

Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Funding

The authors acknowledge the financial support from the Thailand Research Fund through the Royal Golden Jubilee Ph.D. Program (Grant No. PHD/0243/2553) and the Russian Science Foundation, Project 15-13-20015. We are also grateful to M. Taifur Rahman for the preliminary experiments which were not included in this publication.

Funders	Funder number
Russian Science Foundation	15-13-20015

Keywords

Droplets
Emulsions
Microfluidics
X-mixers

Access to Document

10.1002/ceat.201800440

Cite this

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