Researchers from NITech, Japan, have recently developed a novel full-field extensional rheo-optical technique that can accurately characterize structural deformations in a complex fluid under ...

Elongational flow refers to the stretching deformation of a polymer melt under extensional stresses, as encountered in film blowing, fibre spinning, foaming and advanced extrusion techniques. Unlike ...

This is because the plastic is constantly expanding or stretching in those processes. Two polymers may have identical shear flow behavior, but they could exhibit different extensional flow behavior ...