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Swelling and collapse of polyelectrolyte gels in equilibrium with monovalent and divalent electrolyte solutions
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10.1063/1.3264950
/content/aip/journal/jcp/131/19/10.1063/1.3264950
http://aip.metastore.ingenta.com/content/aip/journal/jcp/131/19/10.1063/1.3264950
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Swelling curves for simulated PE gels of different chain lengths (◻, ◼: 50-mer; ○, ●: 100-mer; △, ▲: 200-mer; and ▽, ▼: 300-mer) in equilibrium with a 1:1 (open symbols) or a 2:1 (solid symbols) electrolyte solution reservoir.

Image of FIG. 2.
FIG. 2.

Simulated 300-mer PE gels in equilibrium with 2:1 electrolyte reservoirs. Left: swollen state, ; upper right: partially swollen state, ; lower right: collapsed state, . Blue: monomers; red: divalent counterions; and green: monovalent coions. All three subfigures are rendered at the same scale.

Image of FIG. 3.
FIG. 3.

Radial distribution functions in partially collapsed gel with 2:1 electrolyte, , and . Solid red: monomer-counterion; dotted green: monomer-coion; and dashed blue: monomer-monomer.

Image of FIG. 4.
FIG. 4.

Two-dimensional cross-sectional color map of electrostatic potential inside 300-mer gels with 2:1 electrolyte. Left: swollen state, ; upper right: partially swollen state, ; and lower right: collapsed state, (these three states correspond to those in Fig. 2). The electrostatic potential is positive in red regions and negative in blue regions. Monomers and ions within of the plane are also shown (blue: monomers; red: divalent counterions; and green: monovalent coions).

Image of FIG. 5.
FIG. 5.

Equilibrium concentrations of excess 1:1 (open symbols) and 2:1 (solid symbols) electrolytes in simulated PE gels of different chain lengths (○, ●: 100-mer; △, ▲: 200-mer; and ▽, ▼: 300-mer) as functions of the surrounding electrolyte reservoir concentration.

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/content/aip/journal/jcp/131/19/10.1063/1.3264950
2009-11-19
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Swelling and collapse of polyelectrolyte gels in equilibrium with monovalent and divalent electrolyte solutions
http://aip.metastore.ingenta.com/content/aip/journal/jcp/131/19/10.1063/1.3264950
10.1063/1.3264950
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