Syllabus
* Structure of polymers
Chemical composition, polymerization
Stereoisomerism, conformations, configurations.
Branching, crosslinking, copolymers, blends of polymers
* Mechanical behavior
Phenomenology
Basic types of deformations, mechanical functions
Boltzmann's superposition principle
Viscoelastic models, mechanical spectra
* Temperature dependence of viscoelastic behavior
Role of time (frequency)
Temperature-time superposition
Rate processes with constant activation energy, Williams - Landel - Ferry equation (WLF)
Molecular interpretation of WLF equation, free volume
* Molecular theory of viscoelastic behavior
Thermodynamic of deformation
Statistic of chain, rubber elasticity
Dynamic of polymer chain, diffusion equation
* Dielectric polarization
Polarization in static field
Polarization in time dependent field
Types of polarizations in electric field
* Dielectric functions
Methods of measurements
Measurement of complex permittivity
Dependence of permittivity on time and frequency, distribution functions
* Physical models of dielectric behavior
Harmonic oscillator
Diffusion transport
Relaxations with free charge
Annotation
Phenomenological description and structural interpretation of relaxation behaviour of polymers. Methods of measurements of dynamic of polymer chains using dielectric and mechanical spectroscopy.
Molecular description of mechanical and dielectric relaxation behavior of complex macromolecular systems.