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Potential of mean force between two nanometer-scale particles in a polymer solution

J. Chem. Phys. 123, 034901 (2005); doi:10.1063/1.1953575

Published 22 July 2005

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M. Doxastakis, Y.-L. Chen, and J. J. de Pablo
Department of Chemical and Biological Engineering, University of Wisconsin, Madison, Wisconsin 53706-1691
Expanded ensemble density-of-states simulations and a connectivity altering algorithm are used to investigate the effective interactions that arise between nanoparticles suspended in polymer solutions. Our calculations with systems of long polymeric chains reveal oscillations in the effective polymer-induced interactions between the particles, even at low concentrations. The range of these interactions is considerably longer than originally anticipated, and their origin is traced back to the chain-end effects and density fluctuations that were absent in previous treatments of these systems. ©2005 American Institute of Physics
History: Received 23 February 2005; accepted 20 May 2005; published 22 July 2005
Permalink: http://link.aip.org/link/?JCPSA6/123/034901/1
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KEYWORDS and PACS

Keywords
PACS
  • 61.25.Hq
    Structure of macromolecular and polymer solutions, and polymer melts; swelling
  • 82.70.Dd
    Colloids
  • 61.20.Ja
    Computer simulation of liquid structure
  • YEAR: 2005

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ISSN:
0021-9606 (print)   1089-7690 (online)
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