PHA 327 - Exam 2 - Emulsions 3

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Author:
kyleannkelsey
ID:
214943
Filename:
PHA 327 - Exam 2 - Emulsions 3
Updated:
2013-04-21 21:36:24
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PHA 327 Exam Emulsions
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PHA 327 - Exam 2 - Emulsions 3
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  1. How are surfactants selected for emulsification purposes?
    By their Hydrophile-Lipophile Balance
  2. What is the Hydrophile-Lipophile Balance?
    The relative proportion of lipophilic and hydrophilic portions of a molecules
  3. What is a measure that represents the relative lipophilic and hydrophilic portions of a molecule?
    HLB = Hydrophile-Lipophile Balance
  4. What is the application of a surfactant with an HLB range of 2-3?
    Antifoaming agent
  5. What is the application of a surfactant with an HLB range of 3-8?
    Water-in-oil emulsifier
  6. What is the application of a surfactant with an HLB range of 7-9?
    Wetting agents
  7. What is the application of a surfactant with an HLB range of 8-16?
    O/W emulsifier
  8. What is the application of a surfactant with an HLB range of 13-16?
    Detergent
  9. What is the application of a surfactant with an HLB range of 16-18?
    Solubilizing agent
  10. A surfactant of what HLB range is ideal as an antifoaming agent?
    2-3
  11. A surfactant of what HLB range is ideal as a W/O emulsifier?
    3-8
  12. A surfactant of what HLB range is ideal as a Wetting agent?
    7-9
  13. A surfactant of what HLB range is ideal as an O/W emulsifier?
    8-16
  14. A surfactant of what HLB range is ideal as a Detergent?
    13-16
  15. A surfactant of what HLB range is ideal as a solubilizing agent?
    16-18
  16. What two equations can be used to calculate the HLB?
    • Griffin equation
    • Davis equation
  17. What would you use the Griffin or Davis equation for?
    To calculate the HLB

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