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What is Polydispersity Index from Rheological Data about?

This document describes a method for determining the polydispersity index (Ip2 = Mz/Mw) of the molecular weight distribution of linear polymeric materials from linear viscoelastic data. The method uses the Mellin transform of the relaxation modulus of a simple molecular rheological model to obtain the polydispersity index directly from dynamic shear experiments, without needing to determine the full relaxation spectrum. The technique works for entangled linear polymers regardless of the shape of the molecul

Author

Manel KOUBAA

Language

EN