Rheological behavior of polymeric liquids has been considered to be universally determined
by a few time-independent molecular parameters (such as the Rouse relaxation time and …

Over the past 25 years, IRIS has become an integral resource in materials laboratories
around the world, bringing together stimulating communities of rheology experimentalists …

We provide a Perspective on recent findings in extensional rheology for polymer melts and
solutions with different macromolecular architectures. For linear polymer systems, we focus …

In the melt state at equilibrium, entangled nonconcatenated ring macromolecules adapt
more compact conformations compared to their linear analogs and do not form an …

The POM–POM architecture is the simplest yet defined branched architecture, showing both
strain hardening in elongation and strain softening in shear. The molecular structure …

A series of model poly ((±)-lactide)(PLA) graft copolymers was synthesized by ring-opening
metathesis polymerization and used to probe the star-to-bottlebrush transition in shear and …

Strain hardening of polymer melts is able to improve the uniformity of items in processing
operations with elongational deformation. Of particular interest in this aspect is the …

Integrating latest research results and characterization techniques, this book helps readers
understand and apply fundamental principles in nonlinear polymer rheology. The author …

Rheological properties highly impact the foaming behavior of polymers, as a high melt
strength and low shear viscosity support cell expansion by reducing cell coalescence and …

By considering the rotationality of shear flow, we distinguish between tube segments created
by reptation before the inception of shear flow and those created during flow. Tube …