Year: 2003
Type: article
Abstract: We propose an effective one-component model that accurately reproduces the colloid–colloid radial distribution function gcc(r) of a colloid–polymer mixture. The particles of this effective model interact through an effective potential ueff(r), obtained by inversion of the Ornstein–Zernike equation and a closure suited for fluids with repulsive cores. The consistency of this approach was tested by simulation of the effective one-component fluid and comparison to the original radial distribution function. The effective potential can be separated into a repulsive part (corresponding to the “bare” pair potential between colloids), and a depletion potential, v(r). The strength and range of v(r) are well represented by simple functions of the total volume fraction.
Source: The Journal of Chemical Physics
DOI: 10.1063/1.1533787
Authors: Orlando Guzmán, Juan J. de Pablo
Institution: University of Wisconsin–Madison
Language: English
Subfield: Physical and Theoretical Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
Funder: U.S. Department of Energy
OpenAlex ID: W2013026572