Interfacial protein networks and their impact on droplet breakup

Jones, D. B. and Middelberg, A. P. J. (2003) Interfacial protein networks and their impact on droplet breakup. Aiche Journal, 49 6: 1533-1541. doi:10.1002/aic.690490617


Author Jones, D. B.
Middelberg, A. P. J.
Title Interfacial protein networks and their impact on droplet breakup
Journal name Aiche Journal   Check publisher's open access policy
ISSN 0001-1541
Publication date 2003-01-01
Sub-type Article (original research)
DOI 10.1002/aic.690490617
Open Access Status DOI
Volume 49
Issue 6
Start page 1533
End page 1541
Total pages 9
Place of publication New York
Publisher Amer Inst Chemical Engineers
Language eng
Subject 290000 Engineering and Technology
Abstract Conventional theories for predicting droplet disruption are based on a dimensionless capillary number and fail when a protein emulsifier is present at moderate concentration. In this study, droplet disruption is examined in simple shear and, in parallel, novel equipment is used to define conditions under which an interfacial stress-transmitting protein network forms at an oil/water interface. Capillary number predictions fail when a rigid interfacial protein network forms. Complete stress-strain curves, to high material deformation, are presented for these networks. This work demonstrates that droplets destabilized by interfacially adsorbed protein should be viewed as deformable capsules or cells surrounded by a stress-transmitting network. Deformation and disruption could their be predicted by existing theories for such systems, using the constitutive data provided by the stress-strain tests. Such an approach is expected to be superior to existing methods based solely on interfacial energy.
Keyword Engineering, Chemical
Simple Shear-flow
Mechanical-properties
Air/water Interface
Water-interface
Adsorbed Films
Air-water
Behavior
Adsorption
Layers
Cells
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Chemical Engineering Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 28 times in Thomson Reuters Web of Science Article | Citations
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Created: Thu, 20 Sep 2007, 05:02:05 EST