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A predictive approach of the influence of operating parameters on the size of polymer particles synthesized in a simplified microfluidic system

Serra, Christophe and Berton, Nicolas and Bouquey, Michel and Prat, Laurent E. and Hadziioannou, Georges A predictive approach of the influence of operating parameters on the size of polymer particles synthesized in a simplified microfluidic system. (2007) Langmuir, vol. 2 (n° 14). 7745 -7750. ISSN 0743-7463

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Official URL: http://dx.doi.org/10.1021/la063289s

Abstract

Monodisperse and size-controlled spherical polymer particles were synthesized by in-situ photopolymerization of O/W monomer emulsions. Monomer droplets were produced without surfactant or pre-treatment at a needle tip in a simplified axisymmetric microfluidic device. The effect of the viscosity of the continuous phase on particle size was studied. The system operated in the dripping mode, at low Reynolds number. A dimensionless master curve describes particle diameter as a function of the needle inner diameter as well as velocity and viscosity ratios of continuous and dispersed phases. An empirical law predicts particle size. The normalized particle diameter depends upon the ratio of the capillary numbers of continuous and dispersed phases with an exponent equal to -0.22.

Item Type:Article
Additional Information:This publication is available on http://pubs.acs.org/journals/langd5/index.html
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Université Louis Pasteur-Strasbourg I - ULP (FRANCE)
Laboratory name:
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Deposited By: Laurent PRAT

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