angličtina

Viscometry of non-newtonian liquids, material functions of linear viscoelasticity, their utilization in applied chemistry.

Basic knowlefge of mathematics and physical chemistry.

The course uses teaching methods in form of Lecture - 2 teaching hours per week. The e-learning system (LMS Moodle) is available to teachers and students.

The exam has written and oral parts. The written test is focused on general knowledge in rheology (limit 50 %). The oral part is the lecture - an example of practical application of rheological knowledge on a real problem.

Rheology. Goals and methods. Mechanical behavior and properties of materials. Applicationas of rheological properties of suspension and polymeric liquids in technology.
Basic quantitative notions in continuum mechanics. Stress and deformation. Simple shear and simple shear flow. Viscosity and elasticity. Newtonian liquids. Hookean materials. Necessity of tensorial description of the kinematics and dynamics of spacial deformation. Deformation gradient and velocity gradient. Stress tensor, isotropic pressure. Rheological constitutive equations. Mathematical models of flow.
Non-linear viscous behavior. Plasticity, viscoplasticity, non-Newtonian viscosity, thixotropy.
Linear viscoelasticity. Dynamics of linear autonomous systems. Relaxation, creep, complex viscosity. Maxwell and Kelvin model.
Viscometry and rheometry. Theory of measuring the shear viscosity function for basic types of viscometers. Viscometric normal stress differences. Instrumentation, calibration, primary data treatment.
Non-linear viscoelasticity. Weissenberg effect and centripetal flow, die swell. Elongation viscosity.
Polymer solutions. Limiting viscosity number vs. mola mass, Mark-Houwink equation, conformational characteristics of macromolecules from viscosity measurements.
Suspensions and emulsions.

Basic knowledge of rheology and rheometry of liquids and their practical utilization.

Lectures are not compulsory but recommended.

Barnes H. A., Hutton J.F., Walters K.: An introduction to rheology. Elsevier, Amsterdam 1989.
Morrison F. A.: Understanding Rheology. Oxford University Press, Oxford 2001.
Wein O.: Úvod do reologie. FCH VUT v Brně, Brno 1996.