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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 20: Poster Session I
CPP 20.5: Poster
Monday, March 12, 2018, 17:30–19:30, Poster A
Microrheology of hydrogel-like biological materials — •Elke Bradt1, Sabine Hild1, Erwin K. Reichel2, Thomas Voglhuber-Brunnmaier2, and Milan Kracalik1 — 1Johannes Kepler University, Institute of Polymerscience, Linz, Austria — 2Linz Institute of Technology, Institute for Microelectronics and Microsensors, Linz, Austria
Rheology of biofluids introduces a new inside into medical technology and is crucial for the associated physiological function. Typical example for biofluids is synovial liquid, which can be found in joints. The viscosity and elasticity of synovial fluids are essentially determining the ability to maintain the joint spacing, reduce slip resistance, and protect cartilage from abrasion. Biological elastic liquids show pronounced extensional viscosity, they are therefore often analyzed using capillary breakup rheometry. Comparing to this method microrheological investigation e.g. passive microrheology based on dynamic light scattering is in the meantime a common technique using commercial equipment. In order to be conform with actual ethics in medicine research, for preliminary studies (optimization of measuring conditions like tracer selection, temperature, pH) model liquids are important. In this work different model liquids, which are physiologically similar to synovial liquid, have been explored and measured using passive microrheology. The differences in viscoelastic behavior between model liquids and synovial liquid were evaluated.