Volume 42, Number 5, June 1998
|Page(s)||517 - 522|
|Section||Condensed matter: structure, thermal and mechanical properties|
|Published online||01 September 2002|
Determination of micrometer length scales with an X-ray reflection ultra small-angle scattering set-up
Max-Planck-Institut für Polymerforschung
Ackermannweg 10, 55128 Mainz, Germany
2 Abt. Experimentelle Physik, Universität Ulm - 89069 Ulm, Germany
3 HASYLAB at DESY - Notkestr. 85, 22603 Hamburg, Germany
Accepted: 7 April 1998
We show that the accessible range of length scales of structures deduced with ultra small-angle scattering (USAX) experiments can be enlarged by more than one order of magnitude in reflection geometry set-ups. From the analysis of the diffuse scattering without further model assumptions the length scale of the structures is determinable. The method is illustrated by an example of thin blend films of deuterated polystyrene (dPS) and polyparamethylstyrene (PpMS) where μm-structures are recovered. The results are compared to atomic-force microscopy measurements. For a further comparison, USAX data of a water-based dispersion of polymer particles are presented. They illustrate the resolvable length scale of the conventional transmission geometry.
PACS: 61.10.Eq – X-ray scattering (including small-angle scattering) / 61.41.+e – Polymers, elastomers, and plastics / 68.55.Jk – Structure and morphology; thickness
© EDP Sciences, 1998
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