of the polyelectrolyte chain bears almost no resemblance to the case of confined unconnected ions. Polyacid In polymer terminology, a polyacid is a polyelectrolyte composed of macromolecules containing acid groups on a substantial fraction of the constitutional units. Most commonly, the acid groups are , , or . See also Dispersity Ion-exchange resin Polypyridinium salts References External links Max Planck Institute for Polymer Research, Mainz, Germany Polyelectrolytes: Institute of Physical & Theoretical Chemistry, University of Regensburg, Regensburg, Germany Polyelectrolytes: Vadodara, Gujarat, India Colloidal chemistry Colloids Food additives Organic acids Physical chemistry Polymer chemistry Polymers