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Cover Picture: Tuneable Control of Interfacial Rheology and Emulsion Coalescence (ChemPhysChem 5/2009)
Author(s) -
Malcolm Andrew S.,
Dexter Annette F.,
Katakdhond Jayant A.,
Karakashev Stoyan I.,
Nguyen Anh V.,
Middelberg Anton P. J.
Publication year - 2009
Publication title -
chemphyschem
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200990016
Subject(s) - coalescence (physics) , rheology , dodecane , emulsion , pulmonary surfactant , chemical engineering , chelation , materials science , microfluidics , chemical physics , nanotechnology , polymer chemistry , chemistry , composite material , organic chemistry , metallurgy , physics , astrobiology , engineering
Abstract The cover picture illustrates a microfluidic dodecane‐in‐water emulsion stabilized by the designed peptide surfactant AM1, which forms a cohesive interfacial layer through reversible interaction with Zn II . Deformed coagulated droplets are stabilized against coalescence in the presence of an elastic interfacial layer, but coalesce rapidly following ZnII chelation with EDTA. A. P. J. Middelberg et al show on page 778 that coalescence rate can be controlled by altering interfacial rheology and hence the dynamics of thin film rupture.