TP Colloids

Evaluate the interfacial properties of a product by choosing and implementing a relevant analysis method
Identify the origin of instabilities in colloidal media and implement solutions to remedy them
Choose and implement a few simple methods for preparing colloids

Colloid course

- Application of the colloid course and understanding of stabilization phenomena through an experimental approach.
- Introduction to numerous colloid characterization techniques commonly used in industry, including tensiometry, granulometry and optical microscopy methods, as well as various colloid preparation methods (colloid mill, ultrasound probe).
- Discovery of formulation through the example of an emulsion.


TP1. Tensiometry: interfacial tension measurements of surfactant solutions using various techniques (Whilelmy method, weighed drop, drop shape analysis). Determination of CMC.
TP2. Emulsion formulation: Experimental verification of formulation rules (Bankroft, HLB). Determination of emulsion direction. Description of instabilities.
TP3. Flocculation phenomena - Experimental approach to forces in colloidal media. Flocculation by salt effect and depletion.

Physical and Analytical Chemistry