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Understanding non-Newtonian Behaviors in Toothpaste
Explore in-depth the non-Newtonian behaviors in polymer and particle additives in the formulation of toothpaste
 

Non-Newtonian Behaviors – Toothpaste


How Does Toothpaste Behave Under Shear Stress? 

In this application note, The flow behavior of WHITE LABS toothpaste was characterized using the microVISC.  The toothpaste exhibited shear thinning behavior and the viscosity was fit to a power law model.  A simple analysis confirmed that the measurement shear rate range was relevant to the application of the product which involves extrusion from a tube. 

Flow is involved in both the manufacturing and application of toothpaste since each involves pumping or squeezing through a tube.  Therefore, measuring viscosity under the appropriate conditions is crucial for predicting processability and performance.  Toothpaste can exhibit various types of non-Newtonian behavior ....

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Key Words:

  • Viscosity
  • Shear thinning
  • Shear rate 
  • Power law fluid
  • Toothpaste

 

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