Abstract
The effect of chain stiffness on the interpenetration function Ψ appearing in the second virial coefficient A 2 is in some detail reexamined theoretically on the basis of the helical wormlike chain. The theory predicts that the chain stiffness has a significant effect on Ψ through those on the intra- and intermolecular excluded-volume interactions even for such large molecular weight M that the ratio of the unperturbed mean-square radius of gyration to M is independent of M.
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