Optimization of Dynamic Relaxation Measurements
Innovations for the full measurement of the viscoelastic properties of fluids

Before any measurement is taken, the objective of the characterization must be defined. Two approaches can be distinguished depending on whether the goal is to characterize a product’s overall behavior as-is or to establish a link between its rheological properties and its structure.

When the objective is to characterize the product in its as-used state, the analysis focuses primarily on its overall rheological response. In this case, it is essential to ensure reliable force transfer between the measuring device and the sample and to perform the measurements under conditions as close as possible to those encountered during use.

Conversely, when the objective is to relate the rheological behavior to the material’s formulation and microstructure, preliminary structural characterization is necessary. This allows for the identification of the various organizational structures present in...