SubjectsSubjects(version: 877)
Course, academic year 2020/2021
Dispesions systems II - N409072
Title: Disperzní systémy II
Guaranteed by: Department of Chemical Engineering (409)
Actual: from 2020
Semester: winter
Points: winter s.:4
E-Credits: winter s.:4
Examination process: winter s.:
Hours per week, examination: winter s.:2/1 C+Ex [hours/week]
Capacity: 24 / 24 (unknown)
Min. number of students: unlimited
Language: Czech
Teaching methods: full-time
For type:  
Guarantor: Kosek Juraj prof. Dr. Ing.
Řehoř Ivan RNDr. Ph.D.
Zubov Alexandr Ing. Ph.D.
Z//Is interchangeable with: B409013
This subject contains the following additional online materials
Annotation -
Last update: Kosek Juraj prof. Dr. Ing. (25.09.2013)
The subject includes more difficult topics from the chemical-engineering theory of dispersions. Besides common dispersions we treat systematically also polymeric systems.
Aim of the course -
Last update: SEK409 (17.12.2013)

Students shall be able to:

1. Understand number of theoretical concepts of dispersion systems - starting from characterization up to their manufacturing.

2. Design or modify various methods of the preparation of dispersion systems.

3. Understand relationships between dispersion characteristics and their application properties.

4. Apply the knowledge of polymerization proceses.

Literature -
Last update: SEK409 (09.10.2013)

R: Young R.J., Lovell P.A.: Introduction to Polymers (3rd edition), CRC Press (2011). ISBN-13: 978-0-8493-3929-5.

R: Hunter R.J.: Introduction to Modern Colloid Science, Oxford University Press (1996). ISBN: 0-19-855386-2.

A: Hinds W.C.: Aerosol Technology, Wiley (1999). ISBN-13: 978-0-471-19410-1.

A: Mewis J., Wagner N.J.: Colloidal Suspension Rheology, Cambridge Univ. Press (2012). ISBN-13: 978-0-521-51599-3.

Learning resources -
Last update: Kosek Juraj prof. Dr. Ing. (25.09.2013)

PowerPoint presentations will be given after lessons.

Teaching methods -
Last update: Kosek Juraj prof. Dr. Ing. (25.09.2013)

Lectures and seminars.

Requirements to the exam -
Last update: Kosek Juraj prof. Dr. Ing. (25.09.2013)

Two written tests. Oral exam.

Syllabus -
Last update: Kosek Juraj prof. Dr. Ing. (02.09.2020)

1. Polymers as dispersion systems. Statistical descriptors of molecular architecture. Introduction to method of moment - population balance of simple polymerization.

2. Glass transition temperature and melting temperature. Types of polymerization reactions. Polycondensation - Carothers theory, Flory-Schultz distribution of chain lengths.

3. Kinetics of polycondensation. Effect of stoichiometry on polycondensation. Functionality of monomers and gelation. Effect of chemical equilibria on molecular architecture of polymers.

4. Free-radical polymerization. Quasi-steady state assumption applied on concentration of free radicals. Effect of chain termination on chain length distribution.

5. Gelation. Tromsdorff-Norrish effect. Ceiling temperature. Effect of temperature on rate of polymerization and chain length.

6. Introduction to electrostatic charging - basic definition, mechanisms of charging and discharging, corona. Dynamics of charging in electric field. Triboelectric charging.

7. Electrostatic separator of particles, electric field distribution and efficiency. Rayleigh limit of surface charge density and relation to generation of nanofibers and nanoparticles by electrospraying and related methods.

8. Electrostatic charging in applications - laser printers, dust aerosols, charge on persons, dynamic anti-dust shield.

9. Introduction to quantitative description of aerosols. Kinetic theory of gases. Sedimentation and trajectories of aerosol particles.

10. Inertial impact of aerosols. Macro and microscopic description of diffusion. Mean square displacement by diffusion in 1D and 3D.

11. Filtration of aerosols by various mechanism including fiber filters, pressure drop. Aerosol deposition in respiratory tract. Generation of aerosols by talking.

12. Coagulation of aerosols. Emission of aerosols and environment. Evaporation of water from small droplets. Optical phenomena associated with aerosols.

13. Test 1.

14. Test 2.

Registration requirements -
Last update: Kosek Juraj prof. Dr. Ing. (25.09.2013)

Dispersion systems I.