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Schedule for FPIRC Course no 19
Course: Paper Coating Rheology
Course leader: Prof. Lars Järnström
Date: August 17th - 18th, 2015
Place: Karlstad University, Universitetsgatan 2, Karlstad, Sweden.
The course is given in connection to the Nordic Rheology Conference 2015
Karlstad University, Karlstad
August 19th – 20th 2015
www.kau.se/24th-nordic-rheology-conference
Principal lecturers:
Dr. Mirela Vinerean-Bernhoff, Karlstad University, [email protected]
Prof. Martti Toivakka, Åbo Akademi University, [email protected]
Prof. Lars Järnström, Karlstad University, [email protected]
Prof. Norbert Willenbacher, Karlsruhe Institute of Technology, [email protected]
Dr. Henrik Ullsten, Karlstad University, [email protected]
Assoc. Prof. Caisa Johansson, Karlstad University, [email protected]
2015-04-29
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Schedule for FPIRC Course no 19
DAY 1, Monday, August 17th
Registration opens at 09:00
1. 09h15 – 10h00 Lecture room 9B330, Introduction to rheology by Lars Järnström
Introduction to rheology: Shear flow, Stress and deformation tensors, Material functions (e.g.
η, G’(ω), G’’(ω), G(t))
2. 10h15 – 12h00 Lecture room 9B330, Basic mathematics by Mirela Vinerean
Short introduction to vector and tensor operations and to tensor notation used frequently in
description of conventional and complex fluids. Deformation tensors in Cartesian coordinates.
Deformation-gradient tensors
12h00 – 13h15 Lunch
3. 13h15 – 14h00 Lecture room 9B330, Coating process by Lars Järnström,
Blade and roll coating
- Water retention
- Runnability
- Coating at high solids
- Coating defects
- Prediction of coating structure from rheology
4. 14h15 – 16h00 Lecture room 9B330, Non-Newtonian fluids by Lars Järnström
Non-Newtonian fluids, shear-thinning, shear-thickening, time effects, linear viscoelasticity,
Maxwell models and other simple constitutive equations such as GLVE model.
5. 16h15 – 17h00 Lecture room 9B330, Test methods by Lars Järnström.
17h00 Buffet dinner at university
6. 18h00 – 19h30 Room No. 9E213, Tutorials (Caisa Johansson, Henrik Ullsten, Lars
Järnström)
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Schedule for FPIRC Course no 19
DAY 2, Tuesday, August 18th
7. 09h15 – 12h00 Lecture room 9B330, Suspension rheology and colloidal stability,
Influence of coating microstructure on rheological properties of pigment suspensions by
Martti Toivakka
12h00 – 13h15 Lunch
8. 13h15 – 15h00 Lecture room 9B330, Fundamentals of polymer solutions by Norbert
Willenbacher
Fundamentals of polymer solutions (diluted solutions and entangled polymers). Principles of
interaction (entanglements, associative and adsorption) Flexible macromolecules, Effect of
branching, effects of excluded volume, determination of molecular weights and molecular
dimensions, radius of gyration.
9. 15h15 – 16h00 Lecture room 9B330, Elongational flow by Norbert Willenbacher
Elongational flow, deformation tensors in uni-, biaxial and planar elongational flows,
imprortance of elongational flow, experimental methods
10. 16h15 – 17h00 Lecture room 9B330, Thickeners by Norbert Willenbacher
Thickeners and soluble polymers used in coating colour (starches, CMC, PVA, ASE, proteins,
gums, etc.). Rheolgical properties of coating colours and their effect on the coating process.
17h00 End of course
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