Hybrid silica/polystyrene colloids of controlled morphology
type: Dataset
description: The colloidal molecules are described as robust aggregates of spherical particles mimicking the space-filling models of simple conventional molecules. Their preparation is studied in order to obtain high morphology yields and narrow size distributions, as required to expect future applications like supracolloidal assembly and materials fabrication. The strategy is based on introduction of functionalized silica seeds in a styrene emulsion polymerization batch, leading to nucleation/growth of a discrete number of spherical PS nodules anchored to the silica surface.The study proposes an optimization of the synthesis of (i) the silica seeds by a sol-gel process and (ii) the PS latex particles by an emulsion polymerization. Silica/PS clusters structures are characterized by cryo-electron tomography and their arrangement is discussed using well-known geometrical models and suggesting a new model of nodules growth. At last, a preliminary study is carried out to cover these clusters with an oxide shell (SiO2 and TiO2).
identifier: NNT: 2011BOR14431
issued: 2026-05-06T07:36:11.785451
language: fr
modified: 2026-05-06T07:36:11.785455
contact point: Organization
  fn: CCSD
keyword: chimmatechemical-sciencesmaterial-chemistry
keyword: cluster-hybride
keyword: colloidal-molecule
keyword: cryo-electron-tomography
keyword: cryo-tomographie-electronique
keyword: emulsion-polymerization
keyword: hybrid-cluster
keyword: infoeu-reposemanticsdoctoralthesis
keyword: molecule-colloidale
keyword: polymerisation-en-emulsion
keyword: polystyrene
keyword: silica
keyword: silice
keyword: sol-gel
keyword: theses
landing page: https://theses.hal.science/tel-00949569

Hybrid silica/polystyrene colloids of controlled morphology
type: Distribution
format: HTML
issued: 2026-05-06T07:36:11.787511
modified: 2026-05-06T07:36:11.762176
access URL: https://theses.hal.science/tel-00949569

test_moissonnage_selune
type: Agent