Viscosity Changes


How does the amount of surfactant affect viscosity?

I'm working on hand soap and shower gel. 
the shower gel has 22% surfactans
the hand soup has 16% surfactans

the result of end of the experiments;
Shower gel viscosity higher than hand soup...

used surfactans in Hand soup experiment:
SODIUM LAURETH SULFATE 70% -10
COCAMIDOPROPYL BETAINE 35% -3
Coco Glucoside -0,5

used surfactans in Shower gel experiment:
SODIUM LAURETH SULFATE 70% -15
COCAMIDOPROPYL BETAINE 35% -5
Coco Glucoside -0,5

Thank you...

Comments

  • chemicalmattchemicalmatt Member, Professional Chemist
    The reason you are seeing a higher viscosity with higher surfactant content is the amount of available water is decreasing. Keep going in this direction and you will soon have a jelly.  However, should you change ratios of these three surfactants you would see higher or lower viscosities due to physical chemistry I am not going to spend time here explaining. 
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