Rheological models based on the double reptation mixing rule: the effects of a polydisperse environment
Résumé
The relationship between rheological data and molecular-weight distribution of linear polymers was studied. Only models that take into account tube renewal effects were able to describe correctly the behavior of different polymer species, such as PS, PMMA, and HDPE. Changing the mathematical form of the kernel function in the mixing rule, or changing the form of the mixing rule itself did not improve the description of polydispersity effects.