Jump to main content
Jump to site search

Issue 44, 2013
Previous Article Next Article

Dynamics of confined depletion mixtures of polymers and bidispersed colloids

Author affiliations

Abstract

We investigate the effect of confinement on solidification of mixtures of non-adsorbing polymers and bidispersed colloidal particles (size ratio aS/aL ≈ 0.49) in a low-dielectric-constant solvent. Holding the total volume fraction of particles fixed, the dynamics of the large particles become increasingly slow as either the volume fraction of small particles is increased or the confinement thickness is decreased. Confinement to ten large particle diameters induces gelation in all samples investigated, with the most arrested dynamics appearing when both the depletant concentration and volume fraction of small particles are large. The changes in dynamics are consistent with an increase in the effective interparticle attraction that is driven by changes in the electrostatic repulsion between particles as the suspension is confined, and thus are an indirect secondary effect of confinement.

Graphical abstract: Dynamics of confined depletion mixtures of polymers and bidispersed colloids

Back to tab navigation

Supplementary files

Publication details

The article was received on 10 Jul 2013, accepted on 09 Sep 2013 and first published on 11 Sep 2013


Article type: Paper
DOI: 10.1039/C3SM51879E
Citation: Soft Matter, 2013,9, 10617-10626
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    Dynamics of confined depletion mixtures of polymers and bidispersed colloids

    R. Pandey and J. C. Conrad, Soft Matter, 2013, 9, 10617
    DOI: 10.1039/C3SM51879E

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements