The lattice cluster theory (LCT) for the thermodynamics of a wide array of polymer systems has been developed by using an analogy to Mayer's virial expansions for non-ideal gases. However, the high-temperature expansion inherent to the LCT has heretofore precluded its application to systems exhibiting strong, specific “sticky” interactions. The present paper describes a reformulation of the LCT necessary to treat systems with both weak and strong, “sticky” interactions. This initial study concerns solutions of linear telechelic chains (with stickers at the chain ends) as the self-assembling system. The main idea behind this extension of the LCT lies in the extraction of terms associated with the strong interactions from the cluster expansion. The generalized LCT for sticky systems reduces to the quasi-chemical theory of hydrogen bonding of Panyioutou and Sanchez when correlation corrections are neglected in the LCT. A diagrammatic representation is employed to facilitate the evaluation of the corrections to the zeroth-order approximation from short range correlations.
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14 February 2012
Research Article|
February 13 2012
Lattice cluster theory of associating polymers. I. Solutions of linear telechelic polymer chains
Jacek Dudowicz;
Jacek Dudowicz
a)
1The James Franck Institute,
The University of Chicago
, Chicago, Illinois 60637, USA
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Karl F. Freed
Karl F. Freed
1The James Franck Institute,
The University of Chicago
, Chicago, Illinois 60637, USA
2Department of Chemistry,
The University of Chicago
, Chicago, Illinois 60637, USA
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a)
Author to whom correspondence should be addressed. Electronic mail: dudowicz@jfi.uchicago.edu.
J. Chem. Phys. 136, 064902 (2012)
Article history
Received:
November 07 2011
Accepted:
January 04 2012
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Citation
Jacek Dudowicz, Karl F. Freed; Lattice cluster theory of associating polymers. I. Solutions of linear telechelic polymer chains. J. Chem. Phys. 14 February 2012; 136 (6): 064902. https://doi.org/10.1063/1.3681257
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