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why suger beats sediment in shower gels?
which factors affect sedimentation of suger beats?
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16 Replies
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are u using anything to suspend them?
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Yes, we would need a better idea of what else is in the formula to answer such a question.
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Isn’t a sugar beat a type of salsa rhythm?
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guess nasrins is asking for beads????
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I used aculyn 88( acrylate/stearath25 methacrylate) for suspention.
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yes beads. sorry..
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Did you neutralize the polymer????????
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yes with KOH I neutralized it
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As Bobzchemist pointed out in one of his posts you are not getting enough yield value with this polymer or the surfactant combination is negating the yield value of your polymer. Viscosity has nothing to do with suspending ability, your yield value is definitely not enough to overcome the effect of gravitational pull on your beads. Either try a better polymer, (I love Aculyn 22) or go soft on your surfactants. Make sure if any of your surfactants has electrolyte content and how much is going into your formula. Electrolytes interfere with polymers and have a very adverse effect on yield value of certain polymers.
Cheers
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u mean its better to decraese the surfactant or increase the polymer?
and why viscosity dosnt affect? I think it affects.
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nasrins viscosity only slows down the sedimentation process otherwise its the yield value that controls suspension properties.
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See the post below by Bobzchemist and check the link, wonderful article
Suspension ability is a function of yield value/yield stress, not viscosity/thickness. It’s possible to formulate a relatively thin gel with good suspending capacity.
(http://www.lubrizol.com/Home-Care/Documents/Technical-Data-Sheets/TDS-244-Measurement-Understanding-Yield-Value-Personal-Care-Formulations.pdf )How this holds up for high-surfactant formulas isn’t something I’m familiar with. -
in my experience with suspension shower gels and similar products, more surfactant = more Newtonian flow properties = less efficient suspension
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@Bill hence we use polymers to take it towards non newtonian behavior but keeping in mind the ever present gravity and thats where the optimization and selection of ingredients come into play.
cheers
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both aculyn 88 and aculyn 22 are
Acrylates/Steareth-20 Methacrylate Copolymer
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Since I haven’t used Aculyn 88 I couldn’t comment on that, chemically same but still I haven’t used this grade.
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