Thermodynamics and Structure of Plate-Like Particle Dispersions
type: Dataset
description: A considerable amount of mineral particles are found to have a plate-like shape. The work in this thesis concerns theoretical investigations, using a Monte Carlo method, of the properties of such particles in aqueous solutions. The objectives were first to create a model that could capture the essential physics of clay suspensions and also to understand the role of thermodynamics in certain chemical processes. For all investigations, the results are related to experimental studies. The acid-base behavior of clays have been studied, using the primitive model, and an excellent agreement between simulated and experimental results was found. The formation of gel phases as a function of the charge anisotropy have also been investigated. Liquid-gel and sol-gel transitions are found to occur for high and moderate charge anisotropy, respectively. These transitions were also found to be size and salt dependent. In absence of charge anisotropy, a liquid-glass transition is reported. The formation of smectic and columnar liquid crystals phases with plate-like particles has been found to be favored by a strong charge anisotropy, in opposition to what was observed for nematic phases. New liquid-crystal phases were also reported. The stability and growth of nanoplatelets is discussed. It was found that the internal Coulombic repulsion could be the cause of the limited growth of C-S-H platelets. The influence of thermodynamics on the agregation mode of such platelets was also investigated
identifier: NNT: 2012DIJOS021
issued: 2026-05-11T06:47:50.828354
language: en
modified: 2026-05-11T06:47:50.828358
contact point: Organization
  fn: CCSD
keyword: charge-anisotropy
keyword: chimothechemical-sciencesother
keyword: gel-phase
keyword: glass-phase
keyword: infoeu-reposemanticsdoctoralthesis
keyword: liquid-crystal-phases
keyword: mathmath-gmmathematics-mathgeneral-mathematics-mathgm
keyword: model-clay-system
keyword: pas-de-mot-cle-en-francais
keyword: physcondcm-genphysics-physicscondensed-matter-cond-matother-cond-matother
keyword: plate-like-particles
keyword: simulations
keyword: statistical-mechanics
keyword: theses
landing page: https://theses.hal.science/tel-00818964

Thermodynamics and Structure of Plate-Like Particle Dispersions
type: Distribution
format: HTML
issued: 2026-05-11T06:47:50.830386
modified: 2026-05-11T06:47:50.809756
access URL: https://theses.hal.science/tel-00818964

test_moissonnage_selune
type: Agent