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Some explanation about emulsion
1) Bibliography says that ceteareth-25 gives more viscosity then ceteareth_20, Making hair conditioner based on Cetearyl alcohol and Cetrimonium alcohol I make same formulation with same level just I changed ceteareth-20 to 25 so the result is in opposite with bibliography so hair conditioner with ceteareth-20 is more thick then with ceteareth-25 even colour is not same it is more opaque with Ceteareth-20.
Is there any explanation?
2) In ulprospector says
*Ratio of high HLB to total surfactant has a significant impact on viscosity and the conditioning properties. For optimum conditioning this ratio should be ~30%.
*Chain length of low and high HLB surfactants. The best low HLB surfactants are Cetyl, Stearyl, and Behenyl alcohols. The best high HLB cationic surfactants are Stearamidopropylamine (SAPDMA-neutralized), Behenyltrimonium Chloride (BTMAC). Combinations of SAPDMA and BTMAC are also used
So ulprospector supposed (cetyl and Stearyl alcohol are low hlb surfactants) I guess cetyl and Stearyl alcohol aren’t surfactants not?
Then who tried the the ratio 30% described? (I just tried ceteareth-20 and Gms SE and Ceteareth 20 give better viscosity)
3) how much important to make emulsion with the required hlb?
Actually almost emulsifiers Self emulsion do the job whatever the hlb.
4) How to have emulsion wich has texture soo creamy and smooth (without having a very fine points)
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5 Replies
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1. Ceteareth-20 had dmaller molecules so at same percentage more of this surfactant is available. Maybe that cause higher viscosity
2. Ratio 30% or 1:2 between cationic surfactant and fatty alcohol is best for hair conditioning. Not for emulsion stability or viscosity or other surfactants.
3. Zero important
4. Use one part Ceteareth-20 or 25 and 4 or 5 part fatty alcohol.
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Thanks a lot, for
2) do you think it is ratio between cationic active surfactants and fatty alcohol not between level of use of cationic surfactants and fatty alcohol?
Because it is not really clear.
4) Thanks for sharing however in practise if I use 5% ceteareth I have to use 20% fatty alcohol? It will not too much fatty alcohol?
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2. Active surfactant and fatty alcohol.
4. Dont use that mach. Make a sample with 1% Ceteareth 20 and 5% fatty alcohol and see if you need to increase the amount or decrease it.
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<div>2) Clear</div>
4) Supposed you have 15% oil isn’t too low 1% and even more as emulsifier?
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Here fatty alcohol helps emulsion too. It will work like 6% emulsifier
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