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Effects of disorder on fibre diffraction patterns.

R P Millane1, W J Stroud

  • 1Whistler Center for Carbohydrate Research, Purdue University, West Lafayette, Indiana 47907.

International Journal of Biological Macromolecules
|June 1, 1991
PubMed
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Disorder in fibrous polymer microcrystallites impacts diffraction patterns. Understanding these effects is crucial for accurate structure determination from fiber diffraction data.

Area of Science:

  • Materials Science
  • Crystallography
  • Polymer Science

Background:

  • Fiber diffraction data analysis relies on understanding the relationship between crystal structure and diffracted intensities.
  • Disorder within the microcrystallites of fibrous polymers can complicate the interpretation of diffraction patterns.
  • Accurate structural determination from fiber diffraction requires accounting for microcrystallite disorder.

Purpose of the Study:

  • To develop a theoretical framework for describing diffraction patterns from disordered polycrystalline fibers.
  • To investigate the impact of various types of microcrystallite disorder on fiber diffraction patterns.
  • To elucidate the distribution of Bragg and continuous diffraction in disordered systems.

Main Methods:

  • Development of a new theory to model diffracted intensities from disordered polycrystalline fibers.

Related Experiment Videos

  • Computational simulation of diffraction patterns from specimens with controlled disorder.
  • Analysis of the distribution of Bragg and continuous diffraction features.

    • Main Results:

    • The study presents a theoretical model for diffraction from disordered fibrous polymers.
    • Simulated diffraction patterns illustrate the effects of different disorder types.
    • The research quantifies how disorder influences the observed Bragg and continuous diffraction features.

    Conclusions:

    • Microcrystallite disorder significantly affects fiber diffraction patterns and must be considered.
    • The developed theory provides a means to interpret complex diffraction data from disordered polymers.
    • This work has direct implications for improving the accuracy of polymer structure determination using fiber diffraction techniques.