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Lecturer(s)
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Němec Petr, prof. Ing. Ph.D.
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Vališ Jan, Ing. Ph.D.
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Course content
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Introduction to surfaces and interfaces. Surface tension of liquids and solids; interfacial processes. Contact angle of Liquid Drops on Solids. Measurement of static and dynamic contact angle. Solid surface tension calculations from contact angle results. Surface tension and wetting. Surface treatment of polymer materials. Physical principles and effectivity of surface treatment. Surface treatment systems and equipments: corona, atmospheric plasma, flame plasma, chemical plasma treatment. Transport phenomena in porous materials. Thermodynamics of adsorption.Types of adsorption isotherm. Diffusion processes and equations. The solid-liquid interface properties. Adsorption of ions and the electrical double layer. Electrokinetic phenomena (electrophoresis, electro-osmosis, sedimentation potential). Water soluble inks. Preparation of a pigment dispersion in an aqueous medium. Surface treated pigment in admixture with a wetting agent, water and resin. Pigment-polymer interactions. Surfactants. Rheological properties of non-newtonian liquids. Flow behaviour of polymer melts and solutions. Model functions for flow and viscosity curves. Tack behaviour of viscous liquids. and tack measurement. Printing ink transfer on paper. Ink transfer theory. Parameters influencing the effectivity of transfer. Models to predict ink transfer on paper in multiple nips.
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Learning activities and teaching methods
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Monologic (reading, lecture, briefing), Work with text (with textbook, with book)
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Learning outcomes
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This lecture develops an understanding of the physico-chemical processes, shows application of selected physical methods in the study of polymeric materials and introduces modern scientific instrumental techniques.
By the end of the term students should have acquired critical understanding of physico-chemical properties of printing substrates and processes of ink transfer from the plate to paper substrate and thus will be able to analyse problems that occurs in printing. The subject is part of the school leaving examinations.
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Prerequisites
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Knowledge of the printing techniques and technologies and the good knowledge of the physics, mathematics, physical-chemistry and macromolecular chemistry is required. Student should be able to independently resolve some of the examples of the physical-chemistry processes connected with the printing ink transfer within the printing processes.
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Assessment methods and criteria
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Oral examination, Discussion
This module will be assessed through current checks, oral examination supplemented by practical exercise and ability to discuss about the presented problem.
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Recommended literature
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Bartovská, Lidmila. Fyzikální chemie povrchů a koloidních soustav. Praha: Vysoká škola chemicko-technologická, 2002. ISBN 80-7080-475-0.
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Brady, Robert F. Comprehensive desk reference of polymer characterization and analysis. New York: Oxford University Press, 2003. ISBN 0-8412-3665-8.
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Goodwin J. Colloids and interfaces with surfactants and polymers. Wiley&Sons, 2004. ISBN 0 470 84143 5.
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Holmberg K., Jönsson B., Kronberg B., Lindman B. Surfactants and polymers in aqueous solution. Wiley &Sons, 2004. ISBN 0-471-49883 1.
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MacPhee, John. Fundamentals of lithographic printing.. Pittsburgh: GATFPress-Graphic Arts Technical Foundation, 1998. ISBN 0-88362-214-9.
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Mittal K.L. Contact angle, wettability and adhesion. VSP Utrecht, 1993. ISBN 90-6764-157-X.
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Pashley R.M. Applied Colloid and Surface Chemistry. Wiley&Sons, 2004. ISBN 0 47086883 X.
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Pelikán P., Lapčík L., Zmeškal O., Krčma F. Fyzikální chemie Struktura hmoty. VUTIUM Brno, 2000. ISBN 80-214-1583-5.
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Prof. RNDr. Marie Kaplanová, CSc. a kolektiv. Moderní polygrafie. 2010. ISBN 978-80-254-4230-2.
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Wein O. Úvod do reologie. FCH VUT Brno, 1996.
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