Syllabus academic year 2011/2012
(Created 2011-09-01.)
SURFACE AND COLLOID CHEMISTRYKFK025
Credits: 7,5. Grading scale: TH. Cycle: G2 (First Cycle). Main field: Technology. Language of instruction: The course might be given in English. Optional for: B4l, B4lm, K4l, K4m, MLIV1, N4m. Course coordinator: Lars Nilsson, Lars.Nilsson@food.lth.se, Food Technology. Recommended prerequisits: The students are assumed to have basic knowledge in general and physical chemistry. Assessment: Mandatory reports from the practicals (2), written assignments (2) and mandatory seminar assignment with written and oral reporting. Written exam. Student who miss a mandatory assignment may have it replaced by a new assignment training the same abilities. Home page: http://www.food.lth.se.

Aim
The aim of the course is to describe technical surface and colloid chemical phenomena at a molecular level.

Knowledge and understanding
For a passing grade the student must

Skills and abilities
For a passing grade the student must

Judgement and approach
For a passing grade the student must

Contents
Surface and colloid chemistry is a knowledge area with numerous applications within all areas of chemical and biotechnological engineering. For instance almost all foods, numerous drugs, biological systems, bacterial suspensions, many polymer materials, all ceramic materials, multiphase processes and most chemical-technical consumer products are dispersions or by other means colloidal.

The course is based on surface-active components. Both synthetic and natural amphiphiles are treated. Different phases (micellar, liquid crystalline and microemlsions) as well as aggregates such as vesicles are studied.

A central concept is interparticular interactions in relation to colloidal stability. The role of surface activity in controlling interactions through adsorption and non-adsorption is discussed in relation to technical functionality in systems like emulsions and foams. The role of surface activity for wetting, filtration, dewetting, and sintering is discussed. A generally important aspect is how the material properties of dispersed systems are influenced by colloidal interactions and surface phenomenaÂ’s.

The exercise part of the course threat quantitative aspects of the theory as well as problem solving in colloid chemistry. The practicals are aimed to illustrate how different surface and colloidal system might be constructed and work. The practicals are reported in written form. The projects consist of an analysis of surface and colloidal aspects of manufacturing, formulation or application of a consumer product with relevance to the interest of the student. The projects are reported in written and oral form.

Literature
Pashley, R; Karaman, M. Applied Colloid and Surface Chemistry, John Wiley & Sons 2004. ISBN10: 047086883X. ISBN13: 9780470868836