Polyelectrolytes.

Polyelectrolytes are polymers that have dissociating groups in their repeating unit.
They contain ionizable group along the chain, normally exhibit this property in solution that makes it different from non ionizable structures.

Examples of polyelectrolytes.
Like ordinary electrolytes are divided into acids, bases and salts, the polyelectrolytes are classified into polyanions, polycations and polysalts.
Polysalts are made from reacting polyacids (polyanions) with monomeric base and vice versa.
The polyelectrolytes behaves as both electrolytes and polymers.
Like regular salts their solution are electrically conductive and like polymers their viscosity depends on molecular weight and polymer concentration.
In non ionizing solvent -for example poly(acrylic acid) in dioxane- polyelectrolytes behave in completely normal fashion, but in aqueous solution they are ionised.
Polyelectrolytes are used in water treatment as flocculation agents.

Water treatment.
They are also used in shampoos, soaps and cosmetics.
They are used in food products as food coating. NEXT

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