Transparent Body/face scrub - transparency problem

Hey dear Chemists,

I'm new here and my first project is a transparent body scrub with suspensions.

i already have the shower gel formula just have to add the little particles and a suspending agent, for the obvious reason.

the problem is this suspending agent (Acrylates copolymer) is a liquid with a milky color and it stays like that even after the mixing.

what should i do?

ps: the formula contains 
Aqua
Sodium laureth sulfate
Cocamidopropyl Betaine
Coco-Glucoside (and) Glyceryl Oleate
Acrylates copolymer
Sodium chloride


Comments

  • share the percentage of chemicals so we can help better
     
  • 72,50 Aqua
    13,00 Sodium laureth sulfate
    5,00 Cocamidopropyl Betaine
    1,50 Coco-Glucoside (and) Glyceryl Oleate
    3,00 Acrylates copolymer
    1,50 Sodium chloride
    other: preservative, NaOH solution, perfume
    ps: water, acrylates copolymer ans sodium chloride are the variables, all other ingredients are constants.

  • what is the final ph

  • with no base its around 4
  • Chemist77Chemist77 Member, PCF student
    Increase the pH to neutralize the polymer, otherwise it won’t do the job it is supposed to I do. What does the TDS of that polymer says about the final pH adjustment????
  • There are 2 system that can provide high viscosity bulk for your suspension product:
    1. SLES/CAPB/NaCl
    2. Acrylate Polymer/NaOH

    For acrylate Polymer system, you have to adjust final pH to achieve viscosity increasing of this polymer (usually around 7). Some grade of Acrylate Polymer can provide clear final gel bulk at pH around 7. The thing I suggest you to do is making Acrylate Polymer as constant, and set NaOH as variable till the pH that produce best appearance for your product.

    Please read TDS for instruction of Acrylate Polymer.
    Research Scientist (Personal Care Product Development)
  • Chemist77 said:
    Increase the pH to neutralize the polymer, otherwise it won’t do the job it is supposed to I do. What does the TDS of that polymer says about the final pH adjustment????
    Thank you for your input, the TDS specifies that i neutralize the mix with NaOH solution, and i did once on a solution "water + acrylates copolymer 5%" and another on the final mix but it didn't change anything. Still have that white color.
  • PhanThanhPhat 

    in the TDS they mention that at a pH between 6 and 13 the product functions at its best and i increased the pH to 7 and still nothing changed.
    i'm suspecting if the polymer's sample is ruined or something or i might be doing something wrong.

    ps: TDS http://coastsouthwest.com/app/webroot/files/uploads/Synthalen%20W400%20-Distributed%20by%20Coast%20Southwest.pdf
  • Chemist77Chemist77 Member, PCF student
    What if you just add polymer in water and try to neutralize it just to see if it still OK to be used?? 
  • Chemist77 said:
    What if you just add polymer in water and try to neutralize it just to see if it still OK to be used?? 

    That's what i did! didn't work

    choukr11 said:
    Thank you for your input, the TDS specifies that i neutralize the mix with NaOH solution, and i did once on a solution "water + acrylates copolymer 5%" and another on the final mix but it didn't change anything. Still have that white color.

  • Chemist77Chemist77 Member, PCF student
    In that case, time to get a fresh sample. 
  • Thank you so much!
    Great community!
  • bil7bil7 Member
    You firstly have to make neutralize acrylate crosspolymer solution 
    First dissolve acrylate crosspolymer in water and neutralize with triethanolamine 
    5 percent acrylate crosspolymer   1 percent TEA works . 
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