| The effect of solid content and colloidal interactions on the structure of forming particle networks is studied by Brownian dynamics simulation. The different situations are compared in terms of the pair distribution function and the distribution of nearest neighbors around each particle. The results indicate that, in fast coagulation, the higher solid contents lead to a freezing-in of the liquid structure. Nevertheless, this effect can be reduced substantially by the introduction of a shallow secondary minimum and an energy barrier in the interaction potential. However, the structures resulting from such slow coagulation show a substantial degree of porosity, larger than those produced at the same solid content but by fast coagulation. It is also shown how the porosity (defined on a few particle diameters) is reflected in the distribution of nearest neighbors around the center particle, i.e. the very local conformation in the particle network.
for LaTeX users @article{MH\"utter2000-231,
author = {M. H\"utter},
title = {Local structure evolution in particle network formation studied by Brownian dynamics simulation},
journal = {J. Colloid Interf. Sci.},
volume = {231},
pages = {337-350},
year = {2000}
}
\bibitem{MH\"utter2000-231} M. H\"utter,
Local structure evolution in particle network formation studied by Brownian dynamics simulation,
J. Colloid Interf. Sci. {\bf 231} (2000) 337-350.MH\"utter2000-231
M. H\"utter
Local structure evolution in particle network formation studied by Brownian dynamics simulation
J. Colloid Interf. Sci.,231,2000,337-350 |
mk@mat.ethz.ch
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