Mp. Taylor et Jeg. Lipson, EFFECTS OF SOLVENT ON POLYMER-CHAIN DIMENSIONS - A BORN-GREEN-YVON INTEGRAL-EQUATION STUDY, Fluid phase equilibria, 151, 1998, pp. 641-648
The equilibrium properties of a tangent-hard-sphere polymer chain (wit
h site diameter a) in a hard-sphere monomer solvent (with monomer diam
eter D = sigma) are studied using the Born-Green-Yvon integral equatio
n in conjunction with a two-site solvation potential. The solvation po
tential is constructed using low-density results for a hard-sphere tri
mer in a hard sphere solvent. The BGY equation has been solved for pol
ymers of lengths up to 200 for a range of solvent densities. The theor
y accurately describes the compression of the average polymer dimensio
ns with increasing solvent density. Scaling exponents relating the pol
ymer dimensions to chain length and solvent density are also obtained.
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