Modeling the Mechanism of Coagulum Formation in Dispersions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F14%3A43897973" target="_blank" >RIV/60461373:22340/14:43897973 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/la500101x" target="_blank" >http://dx.doi.org/10.1021/la500101x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/la500101x" target="_blank" >10.1021/la500101x</a>
Alternative languages
Result language
angličtina
Original language name
Modeling the Mechanism of Coagulum Formation in Dispersions
Original language description
The stability of colloidal dispersions is of crucial importance because the properties of dispersions are strongly affected by the degree of coagulation. Whereas the coagulation kinetics for quiescent (i.e., nonstirred) and diluted systems is well-established, the behavior of concentrated dispersions subjected to shear is still not fully understood. We employ the discrete element method (DEM) for the simulation of coagulation of concentrated colloidal dispersions. Normal forces between interacting particles are described by a combination of the Derjaguin, Landau, Verwey, and Overbeek (DLVO) and Johnson, Kendall, and Roberts (JKR) theories. We show that, in accordance with the expectations, the coagulation behavior depends strongly on the particle volume fraction, the surface potential, and the shear rate. Moreover, we demonstrate that the doublet formation rate is insufficient for the description of the coagulation kinetics and that the detailed DEM model is able to explain the autocat
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP106%2F11%2F1069" target="_blank" >GAP106/11/1069: Droplet breakup and coalescence in flowing immiscible polymer blends</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Langmuir
ISSN
0743-7463
e-ISSN
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Volume of the periodical
30
Issue of the periodical within the volume
NEUVEDEN
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
2693-2702
UT code for WoS article
000333235500013
EID of the result in the Scopus database
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