TY  - JOUR
AU  - Kim, Sunhyung
AU  - Hyun, Kyu
AU  - Kim, Yun Soo
AU  - Struth, Bernd
AU  - Clasen, Christian
AU  - Ahn, Kyung Hyun
TI  - Drying of a Charge-Stabilized Colloidal Suspension in Situ Monitored by Vertical Small-Angle X-ray Scattering
JO  - Langmuir
VL  - 29
IS  - 32
SN  - 1520-5827
CY  - Washington, DC
PB  - ACS Publ.
M1  - DESY-2014-01441
SP  - 10059 - 10065
PY  - 2013
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000323193100015
C6  - pmid:23875615
DO  - DOI:10.1021/la401897n
UR  - https://bib-pubdb1.desy.de/record/166561
ER  -