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Lecturer(s)
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Jašúrek Bohumil, Ing. Ph.D.
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Bouška Marek, doc. Ing. Ph.D.
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Bourek Jan, Ing. Ph.D.
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Bendáková Nela, Ing.
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Course content
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1. Basic characteristics of polymers, monomers and oligomers. Basic concepts and nomenclature. Polymer preparation methods (step and chain polyreactions). 2. Polycondensation and polyaddition reactions (basic characteristic, functionality of monomers, practical examples of production and use of polymers). Radical and ionic polymerization (mechanism, elementary steps, kinetics of polymerization, practical examples of production and use of polymers). 3. Radical polymerization techniques, polymerization in a homogeneous and heterogeneous environment, block, solution and suspension polymerization. Emulsion polymerization. UV-curable inks cured by radical and cationic polymerization (composition, properties, radiation sources, etc.). 4. Average molecular weights (Mn, Mw, Mv and Mz) and methods of their determination. Shape of an isolated macromolecule. Determination of macromolecule length. Conformational isomerism. 5. Intermolecular forces. Physical states of polymers. Parameters affecting Tg. Semicrystalline polymers. Determination of crystallinity index. DSC and DTA. Crystallization of polymers. Morphology. Homogeneous, heterogeneous and athermal nucleation. 6. Viscosity and viscous flow of liquids. Newtonian and non-Newtonian fluids and their characterization. Dependence of viscosity on molecular weight and temperature. Models describing the non-Newtonian behaviour of fluids. 7. Viscosity of dilute solutions of polymers. Viscosity parameters. Viscosity measurement. 8. Viscoelasticity of polymers. Elastic, plastic and viscoelastic deformation of materials. Creep and stress relaxation. Five regions of viscoelastic behavior of amorphous polymers. 9. Mechanical properties of polymers. Dynamic and static tests. Creep, stress relaxation, tensile test etc. 10. Electrical properties of polymers (dielectric properties of polymers, electrical conductivity of polymers, non-conductive and conductive polymers). Static electricity and methods of its suppression in printing. 11. Polymer composites. Fiber and particle composites with a polymer matrix. Influence of the structure and properties of the components on the mechanical properties of composites. Natural polymers (properties, use, modification). 12. Polymer materials use in printing, their properties and use. Printing techniques used for printing of polymers. 13. Surface free energy, surface tension. Methods of measuring and adjusting the surface free energy of polymeric materials. Problems associated with the printing of polymeric materials and possible solutions.
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Learning activities and teaching methods
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Monologic (reading, lecture, briefing), Dialogic (discussion, interview, brainstorming)
- Contact teaching
- 52 hours per semester
- Home preparation for classes
- 30 hours per semester
- Preparation for an exam
- 80 hours per semester
- Preparation for a partial test
- 40 hours per semester
- Preparation for a final test
- 20 hours per semester
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Learning outcomes
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Acquire knowledge that can help solve technological problems connected with treatment of inks and varnishes, printed materials (especially polymeric foils) and materials for improvement of prints (lamination, hot stamping etc.)
Students acquire information about chemical and physical properties of polymer materials and composites, their preparation and possibilities of modification of rheological, mechanical and electrical properties.
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Prerequisites
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Knowledge of courses of Bachelor study program Modern printing and visualization technologies (Introduction to Organic Chemistry, Physics in printing processes).
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Assessment methods and criteria
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Oral examination, Written examination
The examination is oral. Basic form is discussion about selected topics (70 %). Final evaluation also includes two control tests that are written during semester (30 %).
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Recommended literature
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Athiyanathil S., Madathil S. Towards green plastic packaging systems: a research. 2016.
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Jašúrek B, Bouška M. Elektronická verze přednášek předmětu. .
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Mark J. Physical properties of polymers. Cambridge. 2003.
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Mezger .T., Thomas G. The rheology handbook: for users of rotational and oscillatory rheometers. 2011.
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Šňupárek J. Makromolekulární chemie: úvod do chemie a technologie polymerů. Pardubice. 2022.
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