Abstract
The structure, effective forces, and thermodynamics in dense polymer-particle mixtures were analyzed using the Polymer Reference Interaction Site Model (PRISM) theory. Depletion interactions, induced by polymer were quantified through the particle-particle pair correlation function and potential of mean force. It was found that a transition from monotonic decaying, attractive depletion interactions to much stronger repulsive-attractive oscillatory depletion forces took place at nearly the semidilute-concentrated solution boundary. The results show that the particle-particle potential of mean force shows multiple qualitatively different behaviours which rely on the strength and spatial range of the polymer-particle attraction.
Original language | English (US) |
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Pages (from-to) | 6986-6997 |
Number of pages | 12 |
Journal | Journal of Chemical Physics |
Volume | 121 |
Issue number | 14 |
DOIs | |
State | Published - Oct 8 2004 |
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry