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Title: Drying of a charge-stabilized colloidal suspension in-situ monitored by vertical small angle X-ray scattering
Authors: Kim, Sunhyung ×
Hyun, Kyu
Kim, Yun Soo
Struth, Bernd
Clasen, Christian
Ahn, Kyung Hyun #
Issue Date: 22-Jul-2013
Publisher: American Chemical Society
Series Title: Langmuir vol:29 issue:32 pages:10059-10065
Abstract: We report a first application of vertical small angle X-ray scattering to investigate the drying process of a colloidal suspension by overcoming gravity related restrictions. From the observation of the drying behavior of charge-stabilized colloidal silica in situ, we find the solidification of the colloidal particles exhibits an initial ordering, followed by a sudden aggregation when they overcome an electrostatic energy barrier. The aggregation can be driven not only by capillary pressure but also by thermal motion of the particles. The dominating contribution is determined by the magnitude of the energy barrier at the transition, which significantly decreases during drying due to an increased ionic strength.
ISSN: 0743-7463
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Soft Matter, Rheology and Technology Section
× corresponding author
# (joint) last author

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