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Abstract The problem of a polyelectrolyte near the rod limit is formulated incorporating both the short‐range stiffness of the backbone (the “wormlike chain”) and the electrostatic interaction between segments taken as a Debye–Húckel potential. By the use of a physically valid approximation an expression is derived for the mean‐square extension length of a short polyelectrolyte chain. Some remarks are made on the relationship between the electrostatic interaction and the usual excluded‐volume problem for polymer solutions.
Theo Odijk (Tue,) studied this question.