Aggregate Formation of Surface-Modified Nanoparticles in Solvents and Polymer Nanocomposites - Laboratoire Charles Coulomb (L2C) Access content directly
Journal Articles Langmuir Year : 2018

Aggregate Formation of Surface-Modified Nanoparticles in Solvents and Polymer Nanocomposites

Dafne Musino
  • Function : Author
Thomas Chaussee
  • Function : Author
Laurent Guy
  • Function : Author
Natalia Meissner
  • Function : Author
Radoslaw Kozak
  • Function : Author
Thomas Bizien
Julian Oberdisse

Abstract

A new method based on the combination of small-anglescattering, reverse Monte Carlo simulations, and an aggregate recognition algorithm is proposed to characterize the structure of nanoparticle suspensions in solvents and polymer nanocomposites, allowing detailedstudies of the impact of different nanoparticle surface modifications.Experimental small-angle scattering is reproduced using simulated annealing of configurations of polydisperse particles in a simulation box compatible with the lowest experimental q-vector. Then, properties of interest likeaggregation states are extracted from these configurations and averaged. This approach has been applied to silane surface-modified silica nanoparticles with different grafting groups, in solvents and after casting into polymer matrices.It is shown that the chemistry of the silane function, in particular mono- or trifunctionality possibly related to patch formation, affects the dispersion state in a given medium, in spite of an unchanged alkylchain length. Our approach may be applied to study any dispersion or aggregation state of nanoparticles. Concerningnanocomposites, the method has potential impact on the design of new formulations allowing controlled tuning of nanoparticle dispersion.
Fichier principal
Vignette du fichier
Musino_aggregates_Langmuir2018.pdf (2.18 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01768107 , version 1 (28-07-2020)

Identifiers

Cite

Dafne Musino, Anne-Caroline Genix, Thomas Chaussee, Laurent Guy, Natalia Meissner, et al.. Aggregate Formation of Surface-Modified Nanoparticles in Solvents and Polymer Nanocomposites. Langmuir, 2018, 34 (9), pp.3010-3020. ⟨10.1021/acs.langmuir.7b03932⟩. ⟨hal-01768107⟩
66 View
120 Download

Altmetric

Share

Gmail Facebook X LinkedIn More