Extensional, or elongational, viscosity is defined as the resistance of a fluid to extensional flow, which is ideal for studying the complex properties of many fluids used in industrial applications and processes.
The original VROC® design was based on a uniform channel geometry to create a steady shear deformation during flow. An extensional component can be added by introducing a hyperbolic contraction-expansion in the center of the flow channel along with programming different calculations into the software.
In this application note, the viscosity of guar gum in solution was measured as a function of shear rate with the VROC® initium to demonstrate the ability of the automated viscometer to consistently load and measure the highly shear thinning formulations common utilized in the food industry.
Fill out the short form to the right to download the full Application Note!