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SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: Advances In Colloid Science Título del capítulo: Colloidal Aggregation Coupled with Sedimentation: A Comprehensive Overview
An account is made of the experimental, theoretical, and computational
developments that led to our current understanding of the colloidal
aggregation problem when a gravitational field is present. Starting with
unaggregated colloids, a review is made of the advances that led to the
founding of the barometric equation for the distribution of colloidal
particles in a suspension, noticing that for large bodies, like large
colloidal aggregates, their final fate in equilibrium is to be at the
bottom of the container. Then, we briefly review the aggregation of
colloids in the absence of gravity that has been amply studied by both
experiments and simulations. For this purpose, the paradigmatic case of
the DLVO interaction is taken as an example. Next, a brief revision is
made of the seminal experimental work of C. Allain and collaborators on
the colloidal aggregation problem when an external gravitational field
is present, centering our study in the nongelling situations, that is,
for dilute colloidal suspensions, when only sedimentation and deposition
of single clusters occur. Afterward, the development of different
computer simulations that treat this case of single cluster
sedimentation and deposition is reviewed, and note how the different
improvements of the algorithms lead to better correspondences with the
experimental systems. We finally discuss further possible improvements
of the algorithms and end with proposals for future work.
