Post by Anton Paar

Still relying on MFI to predict polymer processing behavior? That is often where costly surprises begin. In polymer processing such as extrusion, compression molding, or injection molding, materials are exposed to a wide range of shear rates. A single MFI or MFR value can support incoming goods inspection or quick comparisons. However, it reflects only one measurement point and can miss critical differences in flow and viscoelastic behavior. Rheological characterization with air-bearing rheometers adds real value by providing shear- and temperature-dependent material properties essential for optimizing processing conditions. It also gives access to viscoelastic behavior and enables conclusions about molecular weight distribution — offering valuable insights, especially for recycled polymers. The practical benefit: Materials with identical MFI values can behave very differently in production. Comprehensive rheological data allows a more realistic assessment of processability, supports confident material comparisons, reduces trial-and-error, and helps ensure consistent product quality. 📥 Download the application report to learn more 🔗 https://loom.ly/zA0IFWE #antonpaar #smartmelt #polymer #polymerprocessing #polymeranalysis #thepowerofpolymers