Molecular weight distribution from viscoelastic data: The importance of tube renewal and rouse modes
Résumé
The determination of the molecular weight distribution (MWD) of linear polymers from viscoelastic data was performed. The parameters of this distribution were fitted by inverting rheological data, using rheological models based on the double reptation mixing rule which related the complex shear modulus to the MWD. It was demonstrated that the tube length fluctuation and tube renewal had important effects on the quality of the calculated MWD.