Study on multi-Yukawa potential between charged colloid particles

The Yukawa potential has the function to express both the attractive dispersion interaction and the double-layer repulsive electrostatic interaction. In this paper, a comprehensive review of recent advances in the use of mean spherical approximation (MSA) to solve the Ornstein–Zernike integral equat...

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Bibliographic Details
Published in:Journal of molecular liquids 2006-03, Vol.125 (1), p.29-36
Main Authors: Lin, Yang-Zheng, Li, Yi-Gui, Li, Ji-Ding
Format: Article
Language:English
Subjects:
Charged colloid solutions
Mean spherical approximation (MSA)
Yukawa EOSs
Yukawa potential
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Summary:The Yukawa potential has the function to express both the attractive dispersion interaction and the double-layer repulsive electrostatic interaction. In this paper, a comprehensive review of recent advances in the use of mean spherical approximation (MSA) to solve the Ornstein–Zernike integral equation to Yukawa potential is introduced. The explicit analytical Yukawa EOSs used for neutral fluids and for like-charged colloid solutions are also described. The one-component multi-Yukawa EOS is deduced and tested by MC data. The pair correlation functions and the electrostatic potentials of mean force between like-charged colloid particles are determined by hypernetted-chain (HNC) approximation. The electrostatic attractive forces are existing between like-charged bovine serum albumin molecules in aqueous NaCl solutions under certain conditions. So the multi-Yukawa potentials are needed.
ISSN:0167-7322
1873-3166
DOI:10.1016/j.molliq.2005.11.014