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New controlled release systems produced by self-assembly of biopolymers and colloidal particles at fluid-fluid interfaces
The dispersed systems, such as emulsions and suspensions, are encountered in a large variety of applications areas, such as food, cosmetics, pharmaceutics and polymers. In order to obtain the desired properties of an emulsion in the dispersing process, the droplet size distribution has to be monitored and controlled. By combining droplet generation, deformation and fixation (emulsion-suspension transition) in one experimental set-up, equally shaped particles were produced in order to manipulate the microstructure of dispersions. In a first step, a co-flowing liquid-liquid emulsification process aiming to generate monodispersed droplets([1-2]) was studied. With such droplets at hand, deformation of each individual droplet can be achieved in the second step when the flow field of the downstream apparatus is known. Using gelling biopolymeric material as dispersed phase it is further possible to "freeze" and conserve the non-equilibrium shapes of such deformed droplet. As a consequence, suspensions of gelled emulsion droplets of various shape and shape functionality were obtained([3-5]). These new shapes, such as sphere, fibrils and "hooky" bodies, provide an advanced tool to control and manipulate the rheological properties and product performance of dispersed systems beside the well-known influence of the volume fraction of the dispersed particles([4, 6-8]). [hide]
Scientific Board
Andreas Bausch
TU Munich, Germany ►
Peter Fischer
ETH Zurich, Switzerland ►
Anne-Marie Hermansson
SIK, Sweden ►
Martin Kroger
ETH Zurich, Germany/Switzerland ►
Erik van der Linden
Wageningen UR, The Netherlands ►
Niklas Loren
SIK, Sweden ►
Leonard Sagis
Wageningen UR, The Netherlands ►
Erich Windhab
ETH Zurich, Switzerland ►
Klaas-Jan Zuidam
Unilever, The Netherlands ►
Scientific Stuff
Manuela Duxenneuner
ETH Zurich, Switzerland ►
Sophia Fransson
SIK, Sweden ►
Nam-Phuong Humblet-Hua
Wageningen UR, The Netherlands ►
Joeska Husny
ETH Zurich, Australia/Switzerland ►
Orit Peleg
ETH Zurich, Israel/Switzerland ►
Cyrille Vezy
TU Munich, Germany ►
Varvara Mitropoulos
ETH Zurich, Switzerland ►
Associated Scientists
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SY Tee, AR Bausch, PA Janmey,
The mechanical cell
CURRENT BIOLOGY 19 (2009) R745 ►Selected conferences (co-)organized by project members
8th World Congress on Computational Mechanics WCCM8 2008
30 June - 5 July 2007, Venice, Italy ►13 May 2025
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