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surfactant emulsifier performance
This is just out of curiosity.
I was making a batch of sulphate-free shampoo today.
The surfactants are laureth-6 carboxylic acid, sodium cocoamphoacetate, and CAPB.
Normally I emulsify the fragrance first by adding it to the SCA with stirring. This produces a cloudy emulsion which becomes clear when the dilution is complete.
Today for no good reason I added the fragrance to the L-6CA, (90% active) and the mixture remained perfectly clear.
It seems to me that one surfactant is a lot more efficient as an emulsifier than the other - or am I missing something here? -
2 Replies
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it’s simply because your L-6CA is more concentrated, so there’s less water to make the mixture go cloudy
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Ah! Right. Thank you.
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