Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 333520
Title Influence of dynamic interfacial tension on droplet formation during membrane emulsification
Author(s) Graaf, S. van der; Schroën, C.G.P.H.; Sman, R.G.M. van der; Boom, R.M.
Source Journal of Colloid and Interface Science 277 (2004)2. - ISSN 0021-9797 - p. 456 - 463.
DOI https://doi.org/10.1016/j.jcis.2004.04.033
Department(s) Food Process Engineering
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2004
Keyword(s) in-water emulsions
Abstract Membrane emulsification is a promising and relatively new technique for producing emulsions. The purpose of this study was to better understand the influence of interfacial tension on droplet formation during membrane emulsification. Droplet formation experiments were carried out with a microengineered membrane; the droplet diameter and droplet formation time were studied as a function of the surfactant concentration in the continuous phase. These experiments confirm that the interfacial tension influences the process of droplet formation; higher surfactant concentrations lead to smaller droplets and shorter droplet formation times (until 10 ms). From drop volume tensiometer experiments we can predict the interfacial tension during droplet formation. However, the strong influence of the rate of flow of the to-be-dispersed phase on the droplet size cannot be explained by the predicted values. This large influence of the oil rate of flow is clarified by the hypothesis that snap-off is rather slow in the studied regime of very fast droplet formation. (C) 2004 Elsevier Inc. All rights reserved.
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