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Polyelectrolytes.

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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