Drying of a charge-stabilized colloidal suspension in situ monitored by vertical small-angle X-ray scattering

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...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 29(2013), 32 vom: 13. Aug., Seite 10059-65
1. Verfasser: Kim, Sunhyung (VerfasserIn)
Weitere Verfasser: Hyun, Kyu, Kim, Yun Soo, Struth, Bernd, Clasen, Christian, Ahn, Kyung Hyun
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Colloids Suspensions Silicon Dioxide 7631-86-9
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520 |a 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 
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650 4 |a Research Support, Non-U.S. Gov't 
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700 1 |a Hyun, Kyu  |e verfasserin  |4 aut 
700 1 |a Kim, Yun Soo  |e verfasserin  |4 aut 
700 1 |a Struth, Bernd  |e verfasserin  |4 aut 
700 1 |a Clasen, Christian  |e verfasserin  |4 aut 
700 1 |a Ahn, Kyung Hyun  |e verfasserin  |4 aut 
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