UE Polymers 2 physico-chemistry

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Description

Goal: Give notions on configurational and conformational analysis of polymer chains ; self-organization of polymers at the solid state (amorphous state and glass transition, crystalline and semi-crystalline states) ;  general thermomechanical behaviour and methods for the elaboration of polymers and polymer-forming.

Content: 19h Lectures + 6h Discussion sections
 I. Amorphous polymers (7h)
   - Introduction to mechanical testing and reminders on the different state domains. Dynamic mechanical analysis ;  thermomechanical behaviour ; viscoelastic phenomenons: Maxwell models and Voigt model
   - The glass transition: highlighting from the variation of the specific volume with temperature ; highlighting by DSC
   - Molecular origin of the glass transition
   -  Influence of the chemical structure of polymers on the temperature of glass transition
   Discussion section 1: Mechanical models
   Discussion section 2: Dynamic mechanical analysis
II. Semi-crystalline polymers (3h)
   - Crystalline structures of mass polymers. Crystal lamella ; spherulites
   - Measurement of the crystallinity ratio. X-Ray diffraction ; density measurements ; DSC
   - Melting point of crystalline domains. Influence of the chemical structure of polymers.
   - Crystallisation kinetics
Discussion section 3: Cristallinity measurement
III. Rubber elasticity (4h): the phenomenon, the theory.
    Discussion section 4: Measurements of Young's modulus and critical mass of a polymer
IV. Elaboration of polymers and polymer-forming (1.5h)
- Molding, extrusion techniques…
- Spinning techniques (obtention of fibers used in the textile industry and in the biomedical field, (manufacturing surgical materials).
V. Colloids and dispersions (4.5h): Generalities on colloids; applications of polymers to the stabilisation of colloidal suspensions