Determination of Local Fiber Texture in Liquid Crystal Polymer by Electron Diffraction


The rigid chain microstructure of thermotropic liquid crystal polymers (TLCPs) permits an ordered morphology to form consequently giving these materials exceptionally high strength. X-ray and neutron scattering techniques effectively determine the semi-crystalline structure of TLCP but lack the spatial resolution needed to detect morphological changes occurring on sub-micron length scales. This research develops an electron optical technique to resolve the local orientation of LCP fibers at resolutions on the order of 100-300 nm. This paper outlines the essential elements of this technique and presents preliminary results showing systematic morphological changes of LCP fiber as a function of position across the fiber diameter.

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  1. 1.

    Sawyer and D. Grubb, Polymer Microscopy, 2nd ed. (Chapman, London, 1996).

    Google Scholar 

  2. 2.

    T. M. Nicholson and I.M. Ward, Polymer 39 (2), 315–317 (1998)

    CAS  Article  Google Scholar 

  3. 2a

    W. Zhang, G.R. Davies, Polymeribid., 37, 2653 (1996).

  4. 3.

    B. Crist, Annual Review of Materials Science, 1995 (25), 295.

    CAS  Article  Google Scholar 

  5. 4.

    C. M. Hsiung and M. Cakmak, Antec 1991, 1063.

    Google Scholar 

  6. 5.

    A. Biswas and J. Blackwell, Macromolecules 21, 3152 (1988).

    CAS  Article  Google Scholar 

  7. 6.

    A. Romo-Uribe and A. H. Windle, Macromolecules 29, 6246 (1996).

    CAS  Article  Google Scholar 

  8. 7.

    M. Cakmak, A. Teitge, H. G. Zachmann, and J.L. White, Journal of Polymer Science: Part B: Polymer Physics 31, 371 (1993).

    CAS  Article  Google Scholar 

  9. 8.

    V. M. Ugaz and W. R. Burghardt, Macromolecules 31, 8474 (1998).

    CAS  Article  Google Scholar 

  10. 9.

    L. Reimer, Transmission Electron Microscopy, 2nd ed. (Springer, Berlin, 1989), p.440.

    Google Scholar 

  11. 10.

    R. Spontak and A. Windle, J. of Polymer Sci.: B: Polymer Physics 30, 61 (1992).

    CAS  Article  Google Scholar 

  12. 11.

    J. L. White and J. E. Sprueill, Polymer Engineering and Science 23 (5), 247 (1983).

    CAS  Article  Google Scholar 

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Correspondence to J. Taylor.

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Taylor, J., Libera, M. & Greeley, M. Determination of Local Fiber Texture in Liquid Crystal Polymer by Electron Diffraction. MRS Online Proceedings Library 559, 171–176 (1999).

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