Berlin 2018 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 20: Poster Session I

CPP 20.5: Poster

Montag, 12. März 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.