Abstract
AbstractThe theories of Hermans and Overbeek, of Kimball, Cutler, and Samelson and of Katchalsky and Lifson concerning the dimensions of polyelectrolyte molecules in solution are discussed. The assumption that the configurational forces acting in a polyelectrolyte molecule may be adequately represented by the theory of nonelectrolytic polymers is applied in different ways by each theory, and leads to widely different results. It is found that, when additivity of the configurational and electrostatic contributions to the free energy is assumed, the configurational contribution is underestimated. The contribution is overestimated, on the other hand, when the potentials of the forces acting on each segment are assumed to be additive.
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