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Glass Transition, Sorption and Swelling: The G-D and NELF approaches

Glass Transition, Sorption and Swelling: The G-D and NELF approaches. Costas Panayiotou University of Thessaloniki, Greece. The salient features of the development:. The glass transition and glass densification. The Gibbs-DiMarzio + EOS approach. The NELF approach. The Glass – Transition I.

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Glass Transition, Sorption and Swelling: The G-D and NELF approaches

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  1. Glass Transition, Sorption and Swelling:The G-D and NELF approaches Costas Panayiotou University of Thessaloniki, Greece

  2. The salient features of the development: The glass transition and glass densification The Gibbs-DiMarzio + EOS approach The NELF approach

  3. The Glass – Transition I

  4. The Glass –Transition II

  5. Effect of pressure on Tg • The pressure increases the Tg of pure polymers • The presence of a solvent decreases the Tg of the polymer (plasticization) • What will happen when a SCF is interacting with a polymer at high pressures?

  6. Plasticization of glassy polymers

  7. Plasticization of glassy polymers: Retrograde vitrification

  8. Handling the Glassy State with EOS • Density: An order parameter for the non-equilibrium glassy state. Thus: (Macromolecules 1998, 31, 7915; IEC Res. 2004, 43, 6841) • The Gibbs-DiMarzio criterion: S 0 at Tg

  9. Handling the Glassy State with EOS The Gibbs-DiMarzio Approach • The Gibbs-DiMarzio criterion: • The key LF equations: S 0 at Tg

  10. Handling the Glassy State with EOS The Gibbs-DiMarzio Approach • The Gibbs-DiMarzio criterion: • Calculation of entropy: S 0 at Tg

  11. Handling the Glassy State with EOS The Gibbs-DiMarzio Approach

  12. Handling the Glassy State with EOS The Gibbs-DiMarzio Approach

  13. Handling the Glassy State with EOS The Gibbs-DiMarzio Approach

  14. Handling the Glassy State with EOS The NELF Approach

  15. Handling the Glassy State with EOS The NELF Approach

  16. Handling the Glassy State with EOS The NELF Approach

  17. Handling the Glassy State with EOS The NELF Approach

  18. Handling the Glassy State with EOS The NELF Approach

  19. Handling the Glassy State with EOS The NELF Approach

  20. Handling the Glassy State with EOS The NELF Approach

  21. Handling the Glassy State with EOS The NELF Approach

  22. Handling the Glassy State with EOS The NELF Approach

  23. Handling the Glassy State with EOS The NELF Approach

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