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Problems Relating to Long Period Determination in Polyethylene Shish-kebab Structures by G. H. Michler; I. Naumann; F. J. Baltá Calleja; F. Ania is a Materials Science article available to read on EtoBox.

What is Problems Relating to Long Period Determination in Polyethylene Shish-kebab Structures about?

The X-ray long periods from high molecular weight injection molded polyethylene (PE) with a shish-kebab structure have been compared with values derived f'rom electron micrographs. It is shown that while small angle X-ray scattering (SAXS) presents two long periods, the direct measurements from transmission electron microscopy (TEM) furnish only the lower SAXS periodicity. In an attempt to clarify this discrepancy of results, laser light diffraction and Fourier transformation of electron micrographs have been undertaken. Using this method two long periods are found in all regions investigated. Results are discussed in terms of the role played by the structured or "weakly crystalline" interlamellar parts, containing a lower electron density, which are neglected by the small angle scattering of X-rays and which give rise in particular regions to larger scattering periodicities.

Who reads Problems Relating to Long Period Determination in Polyethylene Shish-kebab Structures?

Author

G. H. Michler; I. Naumann; F. J. Baltá Calleja; F. Ania

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 0323-7648)

Published

1997

Language

EN

Field

Materials Science (Physical Sciences)