Journal of Chemical Physics
Feedback | Help | Exit
The Journal of Chemical Physics
   
 
 
 
Previous Article
Non-Gaussian dynamics from a simulation of a short peptide: Loop closure rates and effective diffusion coefficients
Intrachain contact formation rates, fundamental to the dynamics of biopolymer self-organization such as protein folding, can be monitored in the laboratory through fluorescence quenching measurements....
Next Article
Dynamics of deterministic fractal polymer networks: Hydrodynamic interactions and the absence of scaling
We numerically analyze the scaling behavior of experimentally accessible dynamical relaxation forms for networks modeled through finite Sierpinski-type lattices. Previous work has established unequivo...

An effective-colloid pair potential for Lennard-Jones colloid–polymer mixtures

J. Chem. Phys. 118, 2392 (2003); doi:10.1063/1.1533787

Issue Date: 1 February 2003

You are not logged in to this journal. Log in

Orlando Guzmán and Juan J. de Pablo
Department of Chemical Engineering, University of Wisconsin, Madison, Wisconsin 53706-1691
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. ©2003 American Institute of Physics.
History: Received 19 August 2002; accepted 5 November 2002
Permalink: http://link.aip.org/link/?JCPSA6/118/2392/1
BUY THIS ARTICLE   (US$28)
Download HTML Download Sectioned HTML Download PDF (101 kB) View Cart

KEYWORDS and PACS

Keywords
PACS
  • 61.25.Hq
    Structure of macromolecular and polymer solutions, and polymer melts; swelling
  • 82.70.Dd
    Colloids
  • YEAR: 2003

RELATED DATABASES


To view database links for this article,
you need to log in.
To view database links for this article,
you need to log in.

PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (25)
View in Separate Window/Tab
For access to fully linked references, you need to log in. For access to fully linked references, you need to Log in.
  1. S. Asakura and F. Ooswaa, J. Polym. Sci. 33, 183 (1958).
  2. V. J. Anderson and H. N. W. Lekkerkerker, Nature (London) 416, 811 (2002).
  3. A. P. Chaterjee and K. S. Schweizer, J. Chem. Phys. 109, 10464 (1998).
  4. M. Fuchs and K. S. Schweizer, Europhys. Lett. 51, 621 (2000).
  5. W. C. K. Poon, Phys. Rev. E 55, 3762 (1997).
  6. R. Evans, J. M. Brader, R. Roth, M. Dijkstra, M. Schmidt, and H. Löwen, Philos. Trans. R. Soc. London, Ser. A 359, 961 (2001).
  7. S. Ramakrishnan, M. Fuchs, K. S. Schweizer, and C. Zukoski, J. Chem. Phys. 116, 2201 (2002).
  8. E. J. Meijer and D. Frenkel, J. Chem. Phys. 100, 6873 (1994).
  9. P. G. Bolhuis and A. A. Louis, Macromolecules 35, 1860 (2002).
  10. A. A. Louis, P. G. Bolhuis, J. P. Hansen, and E. J. Meijer, Phys. Rev. Lett. 85, 2522 (2000).
  11. A. A. Louis, P. G. Bolhuis, R. Finken, V. Krakoviack, E. J. Meijer, and J. P. Hansen, Physica A 306, 251 (2002).
  12. A. A. Louis, P. G. Bolhius, E. J. Meijer, and J. P. Hansen, J. Chem. Phys. 117, 1893 (2002).
  13. P. G. Bolhuis, A.A. Louis, and J.-P. Hansen, Phys. Rev. Lett. 89, 128302 (2002).
  14. J. P. Hansen and I. R. McDonald, Theory of Simple Liquids, 2nd ed. (Academic, London, 1986).
  15. H. Flyvjberg and H. G. Petersen, J. Chem. Phys. 91, 461 (1989).
  16. F. A. Escobedo and J. J. de Pablo, J. Chem. Phys. 103, 1946 (1995).
  17. D. Henderson, S. Sokolowski, and D. Wasan, J. Phys. Stud. 2, 496 (1998).
  18. D.-M. Duh and D. Henderson, J. Chem. Phys. 104, 6742 (1996).
  19. J. Chihara, Prog. Theor. Phys. 50, 1156 (1973).
  20. W. G. Madden and S. A. Rice, J. Chem. Phys. 72, 4208 (1980).
  21. G. A. Martynov, G. N. Sarkisov, and A. G. Vompe, J. Chem. Phys. 110, 3961 (1999).
  22. G. N. Sarkisov, J. Chem. Phys. 114, 9496 (2001).
  23. N. Choudhury and S. K. Ghosh, J. Chem. Phys. 116, 8517 (2002).
  24. B. V. Derjaguin, Kolloid-Z. 69, 155 (1934).
  25. S. Torquato, T. M. Truskett, and P. G. Debenedetti, Phys. Rev. Lett. 84, 2064 (2000).

CITING ARTICLES
For access to citing articles, you need to log in.
For access to citing articles, you need to Log in.


Copyright © American Institute of Physics