Reducing vs increasing the amount of dilution necessary to get coacervate precipitation

AbdullahAbdullah Member
edited May 22 in Hair
(1. Higher surfactant concentration increases the amount of dilution necessary to get coacervate precipitation.
2. Amphoterics combined with anionics increases the amount of dilution necessary to get coacervate precipitation.
3. Electrolytes increase the dilution necessary to get precipitation.

4. Hydrophobic emollients reduce the amount of dilution necessary for coacervate precipitation vs. polar emollients or no emollient.)
This is from ulprospector

Question is: for better and more deposition of polymer from Shampoo, should we reduce the amount of dilution necessary to get coacervate precipitation or increase it?


Comments

  • ketchitoketchito Member
    @Abdullah The answer is in those 4 points: it depends on your formula. Nevertheless, coacervate forms at the first part of the dilution process during rinsing (once you have enough water to dilute the excess surfactant, the polymer can reach a stoichiometric balance with the anionic surfactant to form the coavervate and precipitate). 
  • AbdullahAbdullah Member
    @ketchito got it.

    This part "increases the amount of dilution necessary to get coacervate precipitation."
    Does it mean you will need more water to dilute the shampoo and get coacervate precipitation?


  • ketchitoketchito Member
    Abdullah said:
    @ketchito got it.

    This part "increases the amount of dilution necessary to get coacervate precipitation."
    Does it mean you will need more water to dilute the shampoo and get coacervate precipitation?


    Yes. You need that extra dilution to either remove the even higher excess surfactant, or the charge screening from salt ions. 
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