Distributed Systems

This module will cover the theoretical knowledge necessary for understanding, formulating, and implementing dispersed systems. The physicochemical principles governing the preparation and stability of solid-liquid and liquid-liquid dispersions will be discussed in detail, in accordance with specifications and expected performance characteristics. The various concepts covered include powder dispersibility, modification of the solid-liquid interface to control zeta potential and colloidal interactions (extended DLVO), and the rheology of dispersed systems in relation to the state of dispersion. Liquid-liquid dispersion: emulsification, Winsor’s R-ratio, formulation using the HLD method, and formulation maps.

Introduction to Synthesis Techniques in Dispersed Media: Emulsion Synthesis of Nanoparticles, Latex, Microcapsules, etc.

CM: 11

TD: 9

• Extract relevant parameters from a particle size analysis to characterize a particulate solid based on the technique used (microscopy, light scattering, sieve analysis, etc.).
• Identify the role of additives (dispersing polymers, surfactants, viscosity-modifying polymers, gelling agents, etc.) used in the various stages of formulating a solid-liquid dispersion.
• Identify the various factors that destabilize dispersions and analyze the rheological behavior of a dispersion in relation to its microscopic state (stable, aggregated, etc.). Implement a systematic approach to modify a formulation in order to limit sedimentation and aggregation. Distinguish between thickening and gelling polymers.
• Formulation of emulsions using the HLD method.
• Various applications will be examined through examples selected to illustrate the concepts presented, in particular, the development of dispersed systems as precursors for ceramic or composite materials, emulsion syntheses of latex, quantum dot nanoparticles, and metal nanoparticles, and techniques for the preparation of microcapsules…

Fundamentals of the Physical Chemistry of Colloids

Understanding the principles of the physical chemistry of aqueous solutions

Concepts in Macromolecular Chemistry

Concepts of Syntheses in Solution

100% Continuous Monitoring

This course will cover solid-liquid dispersions and liquid-liquid dispersions:

• Introduction to the Concept of Equivalent Sphere and Particle Size Distribution of Divided Solids (2H)
• Dispersibility of particulate solids; the role of additives in dispersion formulation; identification of aggregation/flocculation phenomena. Characterization of the dispersion state using rheology (5H)
• Preparation of emulsions using the HLD method; presentation of formulation charts (4 hours)

Examples of applications of distributed systems will be presented in the tutorial (9H):  

• Formulation of solid-liquid dispersions, with a focus on precursors for functional ceramic and composite materials (3H)
• Emulsion Formulation, Example Formulation Charts ((3H))
• Synthesis in emulsions and micellar media (metal nanoparticles, quantum dots, latex, microcapsules, etc.) (3H)

Administrative contact(s):

Master's in Chemistry Office

https://master-chimie.edu.umontpellier.fr/