Polymer Depletion-Induced Instability of Silica Suspensions in the Presence of Flexible and Semiflexible Polymers

Yamazaki, Sayaka; Kawaguchi, Masami; Kato, Tadaya

doi:10.1006/jcis.2002.8595

Cited by 9 publications

(5 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…21 This may suggest that due to the entropic nature of depletion, chain stiffness possibly affects the polymer segment density profiles and the resulting thickness of the depletion layer. This hypothesis was previously confirmed by Yamazaki et al 22 in an experimental system comprising fumed silica particles and either flexible or semi-flexible polymers. They found that the phase stability strongly depends on the chain flexibility.…”

Section: Introductionsupporting

confidence: 65%

The depletion thickness in solutions of semi-flexible polymers near colloidal surfaces: analytical approximations

Martens

Leuken

Opdam

et al. 2022

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

Section: Introductionsupporting

confidence: 65%

The depletion thickness in solutions of semi-flexible polymers near colloidal surfaces: analytical approximations

Martens

Leuken

Opdam

et al. 2022

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…There are also some works which refer to other aspects related to the crown formation phenomenon. Some authors investigated crown behaviour in simultaneous drop impacts: Roisman et al observed multiple drops impacting on a dry surface [ 49 ] and Raman et al studied crown–crown interaction when two drops impacted onto a liquid film [ 39 ]. Zhang et al [ 50 ] investigated the spectrum of small-amplitude perturbations growing on the crown rim during splash on thin liquid layer.…”

Section: Introductionmentioning

confidence: 99%

The differences in crown formation during the splash on the thin water layers formed on the saturated soil surface and model surface

et al. 2017

View full text Add to dashboard Cite

Splash is the first stage of a negative phenomenon–soil erosion. The aim of this work was to describe the crown formation quantitatively (as part of the splash erosion) and compare the course of this phenomenon on the thin water film formed on a smooth glass surface and on the surface of saturated soil. The height of the falling water drop was 1.5 m. The observation of the crowns was carried out by high-speed cameras. The static and dynamic parameters of crown formation were analysed. It was found that the crowns formed on the water film covering the saturated soil surface were smaller and the time intervals of their existence were shorter. In addition, the shapes of the crowns were different from those created on the water layer covering the glass surface. These differences can be explained by the slightly different values of surface tension and viscosity of the soil solution, the greater roughness of the soil surface and the lower thickness of the water film on the soil surface.

show abstract

“…Experimentally, measurements of the depletion interaction between colloidal particles in solutions of stiff chains are limited [31][32][33] . In the work that has been done, most authors fit their experimental findings with the classical AOV-theory, without explicitly accounting for chain stiffness.…”

Section: Introductionmentioning

confidence: 99%

Depletion interaction mediated by semiflexible polymers

Martens

Tuinier

Vis

2022

The Journal of Chemical Physics

View full text Add to dashboard Cite

We present a simple mean-field theory to describe the polymer-mediated depletion attraction between colloidal particles that accounts for the polymer’s chain stiffness. We find that for fixed polymer radius of gyration and volume fraction, the strength of this attraction increases with increasing chain stiffness in both dilute and semidilute concentration regimes. In contrast, the range of attraction monotonically decreases with chain stiffness in the dilute regime, while it attains a maximum in the semidilute regime. The obtained analytical expressions for the depletion interaction were compared with numerical self-consistent field lattice computations and shown to be in quantitative agreement. From the interaction potential between two spheres, we calculated the second osmotic virial coefficient B2, which appears to be a convex function of chain stiffness. A minimum of B2 as a function of chain stiffness was observed both in the numerical self-consistent field computations and the analytical theory. These findings help explain the general observation that semiflexible polymers are more effective depletants than flexible polymers and give insight into the phase behavior of mixtures containing spherical colloids and semiflexible polymers.

show abstract

Polymer Depletion-Induced Instability of Silica Suspensions in the Presence of Flexible and Semiflexible Polymers

Cited by 9 publications

References 13 publications

The depletion thickness in solutions of semi-flexible polymers near colloidal surfaces: analytical approximations

The depletion thickness in solutions of semi-flexible polymers near colloidal surfaces: analytical approximations

The differences in crown formation during the splash on the thin water layers formed on the saturated soil surface and model surface

Depletion interaction mediated by semiflexible polymers

Contact Info

Product

Resources

About