Molecular weight distributions from linear viscoelastic measurements
β Scribed by Devulapalli H. S. Ramkumar; John M. Wiest
- Publisher
- Springer-Verlag
- Year
- 1996
- Tongue
- English
- Weight
- 704 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0035-4511
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π SIMILAR VOLUMES
This article presents a method that provides the molecular weight distribution (MWD) of polymeric material from rheological data. The technique has been developed to deal with linear polymers with a log-normal molecular weight distribution. The rheological data must include the shear storage modulus
Start-up and transient shear-stress flows are modelled here using the recently generated constitutive model for linear viscoelasticity of polymers. The relation derived from control theory and the melt calibration procedure has been developed between the relaxation modulus, dynamic viscosity and mol