MMD of Polydisperse Linear Polymers from Rheological Data - IPP regularisation via heuristic modelling

The inversion of transfer coefficient functionals, such as viscoelastic moduli or viscosity, of dense polymeric liquids is associated with the solution of ill-posed problems resulting from the theory of polymer dynamics. A regularisation method based on a generalised, heuristic rheological model which ignores the thermodynamic properties and focuses on the dependence of inverse time is presented. This allows the calculation of the molecular mass distribution for rheologically simple liquids like e.g. polyethylene or polypropylene melts without any additional a priori information on the system. The provided method is successfully used with uni- and bimodal polymers for the purposes of quality assessment in polymer melt extrusion processes and degradation studies during processing.

About the author

Christian Lang was born in Austria and lives in Germany. He studied Polymer Engineering and Polymer Technologies and Science in Linz. His scientific interests are structural rheology, nonequilibrium liquids and polymer dynamics. He works as a Marie Curie fellow at FZ Jülich.

Product details

• Authors: Christian Lang
• Publisher: AV Akademikerverlag
• Languages: English, German
• Product format: Paperback / Softback
• Released: 31.10.2015
• EAN: 9783639870190
• ISBN: 978-3-639-87019-0
• No. of pages: 76
• Dimensions: 149 mm x 220 mm x 4 mm
• Weight: 118 g
• Subject: Natural sciences, medicine, IT, technology > Chemistry > Physical chemistry