Colloidal Dynamics in Mesoporous Confinement
The mobility of colloids within mesoporous systems is an interesting question both from a fundamental point of view but also of paramount importance to many applied problems (such as tertiary oil recovery or soil decontamination). In order to address this question in a systematic and well-defined way we want to study mesoporous silica (SBA15) which will be filled with an oil-in-water microemulsion that contains droplets that are somewhat smaller than the pore size. By varying the size and the charge of the droplets we will probe how these parameters control the effective interaction with the pore walls and how that affects then in turn the dynamics of the droplets within the mesoporous system. NSE is the perfect technique for this scientific question as it probes the interesting size range of displacement and by contrast matching the silica matrix one is able to focus on the signal of the microemulsion droplets, while basically all other potential methods are faced with the intransparency of the matrix material. From these model experiments we expect to gain fundamentally new insights into the principles that govern colloidal dynamics in mesoporous systems.
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GRADZIELSKI Michael; Leonardo Chiappisi; FARAGO Bela; FINDENEGG Gerhard; GRILLO Isabelle; HAYWARD Dominic; HOERMANN Anja; HOFFMANN Ingo; PRAUSE Albert and SIMON Miriam. (2016). Colloidal Dynamics in Mesoporous Confinement. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-10-1454
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