What are the Techniques Used in Microencapsulation?
Several techniques are employed in microencapsulation:
1. Spray Drying: Involves spraying a solution and drying it rapidly to form a capsule. 2. Coacervation: A technique that involves phase separation to form a coating around the material. 3. Solvent Evaporation: Uses a solvent to dissolve the coating material, which then evaporates leaving behind the encapsulated particle. 4. Polyelectrolyte Complexation: Involves the interaction of opposite charged polyelectrolytes to form a capsule.
Each technique has its own advantages and disadvantages depending on the application.
