One long chain among shorter chains : the Flory approach revisited
Raphaël , E.
Fredrickson , G.
Pincus , P.
- Publisher: EDP Sciences
[ PHYS.HIST ] Physics [physics]/Physics archives
We consider the mean square end-to-end distance of a long chain immersed in a monodisperse, concentrated solution of shorter, chemically identical chains. In contrast with the earlier work of Flory, no simplifying assumption on the wave vector dependence of the effective potential between segments is made. In order to obtain a closed form expression for the dimension of the long chain, we first derive a general expression for the mean square end-to-end distance of a flexible chain with arbitrary two-body interactions using the Edwards-Singh method.