Characterization of Extensional Fluid Properties by Performing Capillary Extensional Measurements

Elongational characterization of low viscosity fluids can easily be performed with the Anton Paar Capillary Extension System for rheometers equipped with an additional lower linear drive.

Macromolecules are widely used as rheology additives to modify the flow behavior of products for various applications such as inkjet printing, spraying, or coating processes

During elongation, the finite extensible polymer molecules are exposed to a significant deformation, resulting in strain hardening (increasing elongational viscosity with increasing deformation)

Despite similar shear behavior, viscoelastic fluids act differently during elongation.Therefore, understanding the impact of viscoelasticity on elongational flow behavior is crucial for numerous processes, where the stability and elongational behavior of fluid threads are critical

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