Monodisperse Emulsion Generation via Drop Break Off in a Coflowing Stream

by: PB Umbanhowar, V Prasad, DA Weitz

Langmuir, Vol. 16, No. 2. (25 January 2000), pp. 347-351.

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DOI, American Chem. Soc. Publications

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Abstract

Abstract: We describe an experimental technique for the production of highly monodisperse emulsions (with minimum achievable polydispersities <3%). The phase to be dispersed is introduced into a coflowing, surfactant-laden continuous phase via a tapered capillary. Drops detach from the capillary when the streamwise forces exceed the force due to interfacial tension. Drop size is a function of the capillary tip diameter, the velocity of the continuous phase, the extrusion rate, and the viscosities and interfacial tension of the two phases. Emulsions composed of a variety of fluids and with drop sizes ranging from 2 to 200 m have been produced using this technique.

@article{umbanhoweremulsion, abstract = {Abstract: We describe an experimental technique for the production of highly monodisperse emulsions (with minimum achievable polydispersities <3\%). The phase to be dispersed is introduced into a coflowing, surfactant-laden continuous phase via a tapered capillary. Drops detach from the capillary when the streamwise forces exceed the force due to interfacial tension. Drop size is a function of the capillary tip diameter, the velocity of the continuous phase, the extrusion rate, and the viscosities and interfacial tension of the two phases. Emulsions composed of a variety of fluids and with drop sizes ranging from 2 to 200 m have been produced using this technique.}, address = {Department of Physics \& Astronomy, Northwestern University, Evanston, Illinois 60208, and Department of Physics, Harvard University, Cambridge, Massachusetts 02138}, author = {Umbanhowar, P. B. and Prasad, V. and Weitz, D. A. }, citeulike-article-id = {1201447}, doi = {http://dx.doi.org/10.1021/la990101e}, journal = {Langmuir}, keywords = {clogging, emulsion, jamming, qual}, month = {January}, number = {2}, pages = {347--351}, posted-at = {2008-06-20 06:40:39}, priority = {2}, title = {Monodisperse Emulsion Generation via Drop Break Off in a Coflowing Stream}, url = {http://dx.doi.org/10.1021/la990101e}, volume = {16}, year = {2000} }

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TY - JOUR ID - umbanhoweremulsion L3 - citeulike-article-id:1201447 TI - Monodisperse Emulsion Generation via Drop Break Off in a Coflowing Stream JF - Langmuir VL - 16 IS - 2 SP - 347 EP - 351 AD - Department of Physics & Astronomy, Northwestern University, Evanston, Illinois 60208, and Department of Physics, Harvard University, Cambridge, Massachusetts 02138 N2 - Abstract: We describe an experimental technique for the production of highly monodisperse emulsions (with minimum achievable polydispersities <3%). The phase to be dispersed is introduced into a coflowing, surfactant-laden continuous phase via a tapered capillary. Drops detach from the capillary when the streamwise forces exceed the force due to interfacial tension. Drop size is a function of the capillary tip diameter, the velocity of the continuous phase, the extrusion rate, and the viscosities and interfacial tension of the two phases. Emulsions composed of a variety of fluids and with drop sizes ranging from 2 to 200 m have been produced using this technique. KW - clogging KW - emulsion KW - jamming KW - qual AU - Umbanhowar, PB AU - Prasad, V AU - Weitz, DA PY - 2000/01/25/ UR - http://dx.doi.org/10.1021/la990101e ER -

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