THEORIES OF EMULSIFICATION

Question 1

The emulsifying agents cause a reduction in the interfacial tension of the two immiscible liquids, which cause the liquid to break up into smaller drops which as spherical in-shape

Answer 1

Surface Tension Theory

Question 2

The use of surface active (surfactant or wetting agents as emulsifiers & stabilizers lowers the interfacial tension of the two immiscible liquids, reducing the repellent force between the liquids & diminishing each liquids attraction for its own molecules

Answer 2

Surface Tension Theory

Question 3

The surfactant forms monomolecular layers around the droplets of the internal phase

Answer 3

Oriented wedge theory

Question 4

Assumes monomolecular layers of emulsifying agent curved around a droplet of the internal phase of the emulsion

Answer 4

Oriented wedge theory

Question 5

The emulsifier forms an interface between the oil & water, surrounding the droplets of the internal phase as a thin layer of film adsorbed on the surface of the drops

Answer 5

Plastic or Interfacial Film Theory

Question 6

Places the emulsifying agent at the interface between the oil & water, surrounding the droplets of the international phase as a thin layer film adsorbed on the surface of the drops.

Answer 6

Plastic or Interfacial Film Theory

Question 7

The viscosity of the medium aids in the emulsification by the mechanical hindrance to coalesce the globules

Answer 7

Viscosity theory