Current Analysis of Huggins and Kraemer Plots for Determining the Intrinsic Viscosity of Macromolecules and the Corresponding Dimensionless Parameters

Dilute polyelectrolyte solutions: recent progress and open questions

“…For several systems, the ratio k D /(A 2 M w ) was independent The Huggins and Kraemers coefficients of polyelectrolytes are discussed in the ESI † (Section S5). Briefly, an analysis of literature data 111,141,210,299,416,[531][532][533][534][535][536] revealed that: (1) increasing the charge fraction leads to a large increase in k H in salt-free solutions and a modest decrease in k H for solutions in excess salt; (2) the Huggins coefficient shows a non-monotonic dependence on the added salt concentration; (3) k H decreases with increasing N until it reaches a constant value, which appeared to be similar to that of neutral polymers; (4) introducing hydrophobic groups leads to a large increase in k H if the added salt concentration is sufficiently high.…”