Colloid Chemistry

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Status of the course

Course objectives

Students will expand basic knowledge of colloid chemistry obtained from lectures in Physical Chemistry. They will learn principles and applications of surface and colloid chemistry.

Course enrolment requirements and entry competences required for the course

Learning outcomes expected at the level of the course (4 to 10 learning outcomes)

Students will upon completion of the course
1) know the modern instrument methods of separation, purification and identification of colloids, 2) be able to interpret properties and effects of surfactants (micellar colloids), 3) be able to explain the kinetic phenomena of colloidal solutions, 4) understand the electrokinetic phenomena, 5) be able to explain the rheological properties of colloidal system.

Course content broken down in detail by weekly class schedule (syllabus)

Lectures
1st week: Introduction. Classification of colloidal systems. Aggregation of colloidal particles.
2nd week: Micelle formation. Properties and structure of micelles in aqueous and non-aqueous solutions.
3rd week: Purification and separation of colloids, ultrafiltration, reverse osmosis.
4th week: Dialysis, lyophilization, gel filtration.
5th week: Size and shape of colloidal particles. Experimental techniques for determining the size and shape of the colloidal particles.
6th week: Kinetic properties of the colloidal systems, sedimentation, diffusion, osmotic pressure.
7th week: Interface Phenomena: liquid-gas, liquid-liquid, solid-liquid interface.
8th week: Viscosity of colloidal systems.
9th week: Experimental techniques for determining the surface composition.
10th week: Rheology of colloidal systems.
11th week: Electrical double layer, electrophoresis.
12th week: Electrokinetic potential and electrical mobility, electrokinetic phenomena.
13th week: Coagulation and stability of colloids.
14th week: Gel, membrane, biological membrane.
15th week: Emulsions and microemulsions.
Laboratory exercises
1. Microemulsions, size of microemulsions aggregates and dynamic. 2. Surface tension. 3. Critical micelle concentration. 4. Standard Gibbs energies of micellization of surfactants in aqueous solutions at different electrolyte concentrations. 5. Microstucture and stability in surfactant free microemulsions.

Format of instruction:

Student responsibilities

Students are required to attend classes and actively participate in the teaching process. This will be recorded and evaluated in making a final assessment.