13C Nuclear magnetic relaxation of tetraethylammonium cation in poly(acrylic acid) solution
Abstract
The condensation of tetraethylammonium cations on poly(acrylic acid) is a progressive process and its extent is limited; the discontinuity of the titration curve, when α approaches 0.40 (ξ≈1), is probably an indication of several polyion–counterion system internal changes.