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A X-ray line profile study on as-polymerized isotactic polypropylene

  • Polymer Science
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Abstract

The line profile analysis of high-resolution wide angle X-ray diffraction spectra (WAXS) has been employed to characterize two polypropylenes polymerized by: a) “conventional” Ziegler-Natta catalyst (PP-A) and b) “high-yield” new supported catalyst (PP-B). The observed differences in line-width are most reasonably due to a marked crystallite size anisotropy, more pronounced for PP-A. The smallest size is along the crystallographic a-axis, which is the preferred direction of growth of crystallites.

Paracrystalline fluctuations, on the whole larger in the high-yield polymer than in the conventional one, are present. The diffuse background resulting from line profile analysis is preliminarily investigated here in terms of scattering from a microcrystalline array.

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Author notes

  1. W. Vogel

    Present address: Fritz-Haber Institut der Max-Planck Gesellschaft, Berlin, FRG

Authors and Affiliations

  1. Fritz-Haber Institut der Max-Planck Gesellschaft, Berlin, FRG

    E. Ferracini, A. Ferrero & V. Malta

  2. Centro di Studio per la Fisica delle Macromolecole del C. N. R., c/o Insituto Chimico “G. Ciamician” dell'Università di Bologna, Italy

    W. Vogel, E. Ferracini, A. Ferrero & V. Malta

Authors
  1. W. Vogel
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  2. E. Ferracini
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  3. A. Ferrero
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  4. V. Malta
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Vogel, W., Ferracini, E., Ferrero, A. et al. A X-ray line profile study on as-polymerized isotactic polypropylene. Colloid & Polymer Sci 262, 885–891 (1984). https://doi.org/10.1007/BF01452219

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  • DOI: https://doi.org/10.1007/BF01452219

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