Thixotropic destruction and secondary cluster growth of supramolecular crystals in suspensions of monodisperse spherical silica particles

被引：0
|
作者：
V.V Serdobintseva
D.V. Kalinin
A.G. Okuneva
J.V. Kuznetsova
机构：
[1] Institute of Mineralogy and Petrography,
[2] Boreskov Institute of Catalysis,undefined
来源：
Reaction Kinetics and Catalysis Letters | 2002年 / 75卷
关键词：
Silica; monodisperse particles; supramolecular crystals; gravitational forces; thixotropic; cluster growth of crystals;
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摘要：
Supramolecular crystals (SC) which appear in concentrated suspensions of monodisperse spherical silica particles (MSSP) can be mechanically destroyed. This destruction occurs because the bonding of structural units (SU) in SC is weak and the interaction forces of SU become locally unbalanced. The SC are destroyed into microblocks with the initial SC structure. The nascent secondary suspension consists of these blocks (clusters). The secondary crystals grow from the clusters and when these clusters are large, the growth is of a dendritic character.
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页码：127 / 133
页数：6
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