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Fourier Transform Perspective on Order-Disorder in Polymeric Systems

Fourier Transform Perspective on Order-Disorder in Polymeric Systems. CCAST, 2007.10.26. From Order to Disorder. Convolution and Correlation. Convolution. Correlation. Self-Correlation. Models of Polymer Chain. Degree of Polymerization. Models of Polymer Chain. Models of Polymer Chain.

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Fourier Transform Perspective on Order-Disorder in Polymeric Systems

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  1. Fourier Transform Perspective on Order-Disorder in Polymeric Systems CCAST, 2007.10.26

  2. From Order to Disorder

  3. Convolution and Correlation Convolution Correlation Self-Correlation

  4. Models of Polymer Chain Degree of Polymerization

  5. Models of Polymer Chain

  6. Models of Polymer Chain

  7. Models of Polymer Chain

  8. Models of Polymer Chain

  9. Models of Polymer Chain Freely joint chain (random walk)

  10. Models of Polymer Chain

  11. Models of Polymer Chain

  12. Models of Polymer Chain Root-mean-square End-to-end distance RF Radius of gyration RF

  13. (s,r) s (0,r0) B A Wiener-Edwards integral

  14. Wiener-Edwards integral Self-consistent Field Theory (SCFT)

  15. Self-avoiding chain

  16. Pair Correlation Function

  17. Scattering experiments Laser light scattering (LLS), Small/Wide angle x-ray scattering (SAXS/WAXS), Neutron scattering

  18. Scattering experiments

  19. Structure factor

  20. Structure factor

  21. Structure factor

  22. Debye function PMMA

  23. Structure factor Gaussian chain

  24. Scattering experiments

  25. Form factor and Structure factor

  26. Convolution and Correlation Convolution Correlation Self-Correlation

  27. −50ºC  Tc−10ºC 0ºC  Tc40ºC Lei Zhu, Stephen Z. D. Cheng, etal., Macromolecules2002, 35, 3553.

  28. Diblock Copolymers: Possible Structures Controlling parameters:

  29. Diblock Copolymers - Why Ordered Phases? Ordered Phase: Lamellar Equilibrium:

  30. Thank you for your attention! Welcome to ICCAS!

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