Erratum: Phase diagram and structure of colloid-polymer mixtures confined between walls [Phys. Rev. E<b>74</b>, 031601 (2006)]

Vink, R. L. C.; Virgiliis, Andrés De; Horbach, Jürgen; Binder, Kurt

doi:10.1103/physreve.74.069903

Cited by 20 publications

(44 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 is correct, and we shall characterize the behavior of colloidpolymer mixtures confined by asymmetric walls in detail, considerably extending preliminary work [68]. Extensive results for the case of symmetric walls have been presented earlier [58,59]. As in previous studies in the bulk [32,33] the simulations are carried out mostly in the grand-canonical ensemble, using a dedicated grand-canonical cluster algorithm [32] together with re-weighting schemes such as successive umbrella sampling [79].…”

Section: Introduction and Overviewmentioning

confidence: 79%

From capillary condensation to interface localization transitions in colloid-polymer mixtures confined in thin-film geometry

et al. 2008

View full text Add to dashboard Cite

Monte Carlo simulations of the Asakura-Oosawa (AO) model for colloid-polymer mixtures confined between two parallel repulsive structureless walls are presented and analyzed in the light of current theories on capillary condensation and interface localization transitions. Choosing a polymer to colloid size ratio of q = 0.8 and studying ultrathin films in the range of D = 3 to D = 10 colloid diameters thickness, grand canonical Monte Carlo methods are used; phase transitions are analyzed via finite size scaling, as in previous work on bulk systems and under confinement between identical types of walls. Unlike the latter work, inequivalent walls are used here: while the left wall has a hard-core repulsion for both polymers and colloids, at the right wall an additional square-well repulsion of variable strength acting only on the colloids is present. We study how the phase separation into colloid-rich and colloid-poor phases occurring already in the bulk is modified by such a confinement. When the asymmetry of the wall-colloid interaction increases, the character of the transition smoothly changes from capillary condensation-type to interface localization-type. The critical behavior of these transitions is discussed, as well as the colloid and polymer density profiles across the film in the various phases, and the correlation of interfacial fluctuations in the direction parallel to the confining walls.The experimental observability of these phenomena also is briefly discussed.

show abstract

Section: Introduction and Overviewmentioning

confidence: 79%

From capillary condensation to interface localization transitions in colloid-polymer mixtures confined in thin-film geometry

et al. 2008

View full text Add to dashboard Cite

show abstract

“…A similar level of agreement was found for the interfacial tension of the gas-liquid 16,23,24 and wall-fluid interfaces, [24][25][26] and for the phase behavior of confined systems. [27][28][29][30][31][32][33][34] The quantitative discrepancies between experimental results and the AOV model results can arise from a number of reasons, such as nonideal solvent conditions, 35 colloidinduced polymer compression, 36 effect of charges on the colloidal surface, 37,38 In this article, we will concentrate on the latter aspect. The simplest inclusion of polymer interactions was done by introducing a step function interaction between the polymers, i.e., an energy penalty for the overlaps of two polymers.…”

Section: Introductionmentioning

confidence: 99%

Effect of excluded volume interactions on the interfacial properties of colloid-polymer mixtures

Fortini

Bolhuis

Dijkstra

2008

The Journal of Chemical Physics

View full text Add to dashboard Cite

Effect of excluded volume interactions on the interfacial properties of colloid-polymer mixtures Fortini, A.; Bolhuis, P.G.; Dijkstra, M. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. We report a numerical study of equilibrium phase diagrams and interfacial properties of bulk and confined colloid-polymer mixtures using grand canonical Monte Carlo simulations. Colloidal particles are treated as hard spheres, while the polymer chains are described as soft repulsive spheres. The polymer-polymer, colloid-polymer, and wall-polymer interactions are described by density-dependent potentials derived by Bolhuis and Louis ͓Macromolecules 35, 1860 ͑2002͔͒. We compared our results with those of the Asakura-Oosawa-Vrij model ͓J. Chem. Phys. 22, 1255 ͑1954͒; J. Polym Sci 33, 183 ͑1958͒; Pure Appl. Chem. 48, 471 ͑1976͔͒ that treats the polymers as ideal particles. We find that the number of polymers needed to drive the demixing transition is larger for the interacting polymers, and that the gas-liquid interfacial tension is smaller. When the system is confined between two parallel hard plates, we find capillary condensation. Compared with the Asakura-Oosawa-Vrij model, we find that the excluded volume interactions between the polymers suppress the capillary condensation. In order to induce capillary condensation, smaller undersaturations and smaller plate separations are needed in comparison with ideal polymers.

show abstract

“…In the field of colloidal science, numerous works have been devoted to the problem of demixing of colloid-polymer mixtures both in bulk and under confinement. In this latter instance, both symmetric mixtures adsorbed in slit pores with neutral walls 4 and non-symmetric mixtures confined between attractive and repulsive walls 5,12,13 have been studied. The effects of randomness and confinement on demixing of colloidpolymer systems have also been extensively investigated.…”

Section: Introductionmentioning

confidence: 99%

Demixing and confinement of non-additive hard-sphere mixtures in slit pores

Almarza

Martín

Lomba

et al. 2015

The Journal of Chemical Physics

View full text Add to dashboard Cite

Using Monte Carlo simulation, we study the influence of geometric confinement on demixing for a series of symmetric non-additive hard spheres mixtures confined in slit pores. We consider both a wide range of positive non-additivities and a series of pore widths, ranging from the pure two dimensional limit to a large pore width where results are close to the bulk three dimensional case. Critical parameters are extracted by means of finite size analysis. As a general trend, we find that for this particular case in which demixing is induced by volume effects, the critical demixing densities (and pressures) increase due to confinement between neutral walls, following the expected behavior for phase equilibria of systems confined by pure repulsive walls: i.e., confinement generally enhances miscibility. However, a non-monotonous dependence of the critical pressure and density with pore size is found for small non-additivities. In this latter case, it turns out that an otherwise stable bulk mixture can be unexpectedly forced to demix by simple geometric confinement when the pore width decreases down to approximately one and a half molecular diameters. C 2015 AIP Publishing LLC. [http://dx

show abstract

Erratum: Phase diagram and structure of colloid-polymer mixtures confined between walls [Phys. Rev. E74, 031601 (2006)]

Cited by 20 publications

References 0 publications

From capillary condensation to interface localization transitions in colloid-polymer mixtures confined in thin-film geometry

From capillary condensation to interface localization transitions in colloid-polymer mixtures confined in thin-film geometry

Effect of excluded volume interactions on the interfacial properties of colloid-polymer mixtures

Demixing and confinement of non-additive hard-sphere mixtures in slit pores

Contact Info

Product

Resources

About