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Title: Preparation of monodisperse multiple emulsions at high production rates by multi-stage premix membrane emulsification
Authors: Vladisavljevic, Goran T.
Shimizu, Masataka
Nakashima, Tadao
Keywords: Membrane emulsification
Shirasu porous glass membrane
Multiple emulsion
Premix membrane emulsification
Monodisperse emulsion
Issue Date: 2004
Publisher: © Elsevier
Citation: VLADISAVLJEVIC, G.T., SHIMIZU, M. and NAKASHIMA, T., 2004. Preparation of monodisperse multiple emulsions at high production rates by multi-stage premix membrane emulsification. Journal of Membrane Science, 244 (1-2), pp. 97-106.
Abstract: Multiple W/O/W emulsions have been prepared by multi-stage (repeated) premix membrane emulsification using Shirasu-porous-glass (SPG) membrane with a mean pore size of 10.7 μm. A coarse emulsion containing droplets with a mean particle size of about 100 μm was homogenized 5-6 times through the same membrane at a constant pressure difference of 20-300 kPa to achieve additional droplet homogenization and size reduction. The optimum conditions with regard to particle size uniformity were 3 homogenization cycles at a pressure difference of 100 kPa, under which the mean size of outer W/O particles was 9 μm and the span of particle size distribution was as low as 0.28. The optimum pressure difference in a single-stage process was higher, but the particle size distribution of prepared emulsions was broader than in a multi-stage process at smaller pressures. The transmembrane flux was in the range of 1.8-37 m3/(m2h) and increased with increasing pressure difference and decreasing the content of W/O particles. The mean size of W/O particles in each cycle was remarkably constant over a wide range of their concentration of 1-60 vol. %.
Description: This is the author’s version of a work that was accepted for publication in Journal of Membrane Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published at: http://dx.doi.org/10.1016/j.memsci.2004.07.008
Version: Accepted for publication
DOI: 10.1016/j.memsci.2004.07.008
URI: https://dspace.lboro.ac.uk/2134/10554
Publisher Link: http://dx.doi.org/10.1016/j.memsci.2004.07.008
ISSN: 0376-7388
Appears in Collections:Published Articles (Chemical Engineering)

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