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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 11: DRG-DPG SYMPOSIUM Rheology III

CPP 11.6: Vortrag

Dienstag, 26. Februar 2008, 11:30–11:45, C 264

Polymer Solutions under Circular Couette Flow — •Andreas Zell and Christian Wagner — Technische Physik, Universität des Saarlandes, D-66123 Saarbrücken

We investigate the behaviour of dilute polymer solutions in a Taylor-Couette cell with independently rotatable cylinders. The focus of our interest lies on the examination of the elongation of the solved polymers and their response on the imposed flow. Our measurements show that we are able to detect these counteracting forces and that we can relate them to the polymer relaxation time of the respective solution. In addition we give a summary of a mathematical discussion of possible laminar flow states in a Taylor-Couette system, where the final argumentation is pointing to the usefulness of one of these flow states to our investigations.