This title appears in the Scientific Report :
2007
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevE.76.041802 in citations.
Please use the identifier: http://hdl.handle.net/2128/3031 in citations.
Analytical phase diagram for colloid-polymer mixtures
Analytical phase diagram for colloid-polymer mixtures
We present a theoretical analysis of the phase behavior of colloid-polymer mixtures which applies to all polymer/colloid size ratios q. It accounts for the crossover from a constant length scale R (radius of gyration) in the colloid limit (small q) to the concentration-dependent correlation length x...
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Personal Name(s): | Fleer, G. J. |
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Tuinier, R. | |
Contributing Institute: |
Weiche Materie; IFF-7 |
Published in: | Physical Review E Physical review / E, 76 76 (2007 2007) 4 4, S. 041802 041802 |
Imprint: |
College Park, Md.
APS
2007
2007-10-09 2007-10-01 |
Physical Description: |
041802 |
DOI: |
10.1103/PhysRevE.76.041802 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Physical Review E
76 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/3031 in citations.
We present a theoretical analysis of the phase behavior of colloid-polymer mixtures which applies to all polymer/colloid size ratios q. It accounts for the crossover from a constant length scale R (radius of gyration) in the colloid limit (small q) to the concentration-dependent correlation length xi in the protein limit (q>1). We obtain predictions that fully agree with observations and simulations. In the protein limit the colloid concentrations eta along the binodals become independent of q and the polymer concentrations phi scale as q(1/gamma), where gamma=0.77 is the scaling exponent in xi similar to phi(-gamma): phase diagrams plotted as phi q(-1/gamma) vs eta are then independent of q. The liquid window in the protein limit is narrow. |