Fundamental and Applied Studies of Emulsion Stability (FASES) - 01.09.14
Science Objectives for Everyone
Fundamental and Applied Studies of Emulsion Stability (FASES) will examine the link between emulsion stability and the physicochemical characteristics of droplet interfaces to obtain a modelling of emulsion dynamics to be transferred to industrial applications on Earth.
Science Results for Everyone Information Pending
UNILEVER, , , United Kingdom
SINTERFACE, , , Germany
Arcofluid, , , France
ENI, , , Italy
NESTLE, , , Switzerland
IFP, , , France
Sponsoring Space Agency
European Space Agency (ESA)
ISS Expedition Duration:
March 2013 - March 2014
Previous ISS Missions
FASES (Fundamental and Applied Studies in Emulsion Stability) will investigate the emulsion stability in relation to the physical-chemistry of droplet interfaces in order to obtain a model of emulsion dynamics that can be transferred to industrial applications.
The main objective of the FASES is the study and observation of emulsion coarsening kinetics in a 0-g environment.
- Microgravity provides a unique possibility for an effective study of all the basic mechanisms (Ostwald ripening, coalescence and aggregation) underlying the emulsion stability. This environment also provides for the avoidance of the perturbing effects of convective flows and of droplet segregation. It is an effective condition for the study of adsorption dynamics and droplet coalescence and aggregation.
These studies will address single and multiple interfaces, as affected by various surfactants. An important part of the program aims at establishing links between emulsion stability and physico-chemical characteristics of droplet interfaces. Further experiments are planned to investigate droplet dispersion in emulsions and phase inversion. On the basis of these studies, the team plans to generate a model of emulsion dynamics to be transferred to industrial applications.
Understanding the microgravity characteristics of emulsions and related physic-chemical solutions and compounds may allow researchers to better produce and handle items used by future space explorers and enhance our ability to live in space for longer durations.
Emulsions are usually a mixture of two liquids that don’t mix well (immiscible) and are often inherently thermodynamically unstable due to their differing solubilities. Emulsions are associated with a vast number of everyday materials and products including industrial processing solutions, food products, personal care items, and are even used to deliver multiple active pharmaceutical ingredients. In addition, by understanding materials that can greatly reduce the surface tension of a solutions constituents may also enhance our ability to produce more stable and long lived emulsions, thus greatly enhancing shelf life of many products used today.
1) The EC shall never be exposed to freezing temperatures.
2) The ground filling procedure of the 28 ITEM sample cells and 16 EMPI sample cells shall be performed in such a way that some of the ITEM and EMPI samples are processed in orbit as quickly as feasible after filling.
3) The EC shall be unstowed and transferred from cargo upload vehicle within berthing +12hrs so that the first set of samples (4 in total) can be processed within optimally within 50days from filling.
FASES will operate in the Fluid Science Laboratory (FSL) between 85 and 200 days while on board ISS.
Ground Based Results Publications
Clausse D, Gomez F, Dalmazzone C, Noik C. A method for the characterization of emulsions, thermogranulometry: Application to water-in-crude oil emulsion. Journal of Colloid and Interface Science. 2005; 287: 694-703.
Kovalchuk VI, Kragel J, Makievski AV, Ravera F, Liggieri L, Loglio G. Rheological surface properties of C12DMPO solution as obtained from amplitude- and phase- frequency characteristics of an oscillating bubble system. Journal of Colloid and Interface Science. 2004; 280: 498-506.
Antoni M, Kragel J, Liggieri L, Miller R, Sanfeld A, Sylvain JD. Binary emulsion investigation by optical tomographic microscopy for FASES experiments. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2007; 309: 280-285.
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