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Extensional Viscosity

Extensional Viscosity Technical Note

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Application Note

Extensional Viscosity Technical Note

Extensional deformation and extensional shearing have a significant impact on certain industrial processes, such as fiber spinning, paint rolling, roll coating, inkjet printing, spraying, electrospinning, enhanced oil recovery, drag reduction, and food processing.

Regions of strong extensional flow can affect the final properties of the final product. Viscoelastic fluids often exhibit extensional thickening beyond the Trouton ratio. Because of this, it may be necessary to model and predict the behavior of these materials, accurately analyze their composition, and predict optimal processing conditions for each characterized fluid. An extensional viscometer/rheometer-on-a-chip is the best technology to accomplish this.

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