Molecular simulation study on the colloidal suspension within dilute fibrous media: The effect of particle concentration on partitioning

Simulations of sieving characteristics of macromolecules in porous membranes at high concentrations

“…The similar behavior was observed in partitioning into fibrous media, such as gels [21][22][23] and in studies of the effect of injected concentration on peak elution volume in steric exclusion chromatography (SEC) [17]. In the region of very dilute solution the increase in the partitioning coefficient Φ with concentration is approximately linear and Φ ∼ = Φ o κ 1 c. The virial coefficient κ 1 characterizing the linear partitioning of polymers was determined earlier in good solvents as a function of λ from measurements, theories and simulations [8,[13][14][15][16].…”

Excluded volume effects on ionic partitioning in gels and microgels: a simulation study

“…This disagreement clearly grows for f = 0.50. As can be seen, the K 2 -values obtained from simulations are greater than those predicted by eqn (12).…”

“…10 Some of these models have been extended to macromolecular charged solutes (e.g., proteins, colloidal particles). 11,12 For instance, Johnson and Deen modified Ogston's model by using a Boltzmann factor that contained an electrostatic free energy to modify the probability of fitting a sphere in a space between fibers. 11 In this approach, however, ions were only accounted for through the Debye screening parameter.…”